SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549

SCHEDULE 13D Under the Securities Exchange Act of 1934

Liftoff Mobile, Inc. (Name of Issuer)

Common stock, par value $0.0001 per share (Title of Class of Securities)

(CUSIP Number)

Michael Gosk c/o General Atlantic Service Company, LP, 55 East 52nd Street, 33rd Floor New York, NY, 10055 (212) 715-4000 (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

06/05/2026 (Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

SCHEDULE 13D

CUSIP No.

1	Name of reporting person GENERAL ATLANTIC, L.P.
2	Check the appropriate box if a member of a Group (See Instructions)   (a)   (b)
3	SEC use only
4	Source of funds (See Instructions) OO
5	Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
6	Citizenship or place of organization DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:	7 Sole Voting Power 0.00 8 Shared Voting Power 25,315,646.00 9 Sole Dispositive Power 0.00 10 Shared Dispositive Power 25,315,646.00
11	Aggregate amount beneficially owned by each reporting person 25,315,646.00
12	Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
13	Percent of class represented by amount in Row (11) 15.0 %
14	Type of Reporting Person (See Instructions) PN

SCHEDULE 13D

CUSIP No.

1	Name of reporting person General Atlantic (SPV) GP, LLC
2	Check the appropriate box if a member of a Group (See Instructions)   (a)   (b)
3	SEC use only
4	Source of funds (See Instructions) OO
5	Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
6	Citizenship or place of organization DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:	7 Sole Voting Power 0.00 8 Shared Voting Power 25,315,646.00 9 Sole Dispositive Power 0.00 10 Shared Dispositive Power 25,315,646.00
11	Aggregate amount beneficially owned by each reporting person 25,315,646.00
12	Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
13	Percent of class represented by amount in Row (11) 15.0 %
14	Type of Reporting Person (See Instructions) OO

SCHEDULE 13D

CUSIP No.

1	Name of reporting person General Atlantic Partners 100, L.P.
2	Check the appropriate box if a member of a Group (See Instructions)   (a)   (b)
3	SEC use only
4	Source of funds (See Instructions) OO
5	Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
6	Citizenship or place of organization DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:	7 Sole Voting Power 0.00 8 Shared Voting Power 25,315,646.00 9 Sole Dispositive Power 0.00 10 Shared Dispositive Power 25,315,646.00
11	Aggregate amount beneficially owned by each reporting person 25,315,646.00
12	Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
13	Percent of class represented by amount in Row (11) 15.0 %
14	Type of Reporting Person (See Instructions) PN

SCHEDULE 13D

CUSIP No.

1	Name of reporting person General Atlantic (LFT), L.P.
2	Check the appropriate box if a member of a Group (See Instructions)   (a)   (b)
3	SEC use only
4	Source of funds (See Instructions) OO
5	Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
6	Citizenship or place of organization DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:	7 Sole Voting Power 0.00 8 Shared Voting Power 25,315,646.00 9 Sole Dispositive Power 0.00 10 Shared Dispositive Power 25,315,646.00
11	Aggregate amount beneficially owned by each reporting person 25,315,646.00
12	Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
13	Percent of class represented by amount in Row (11) 15.0 %
14	Type of Reporting Person (See Instructions) PN

SCHEDULE 13D

CUSIP No.

1	Name of reporting person General Atlantic Partners (Lux) SCSp
2	Check the appropriate box if a member of a Group (See Instructions)   (a)   (b)
3	SEC use only
4	Source of funds (See Instructions) OO
5	Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
6	Citizenship or place of organization LUXEMBOURG
Number of Shares Beneficially Owned by Each Reporting Person With:	7 Sole Voting Power 0.00 8 Shared Voting Power 25,315,646.00 9 Sole Dispositive Power 0.00 10 Shared Dispositive Power 25,315,646.00
11	Aggregate amount beneficially owned by each reporting person 25,315,646.00
12	Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
13	Percent of class represented by amount in Row (11) 15.0 %
14	Type of Reporting Person (See Instructions) PN

SCHEDULE 13D

CUSIP No.

1	Name of reporting person General Atlantic GenPar, L.P.
2	Check the appropriate box if a member of a Group (See Instructions)   (a)   (b)
3	SEC use only
4	Source of funds (See Instructions) OO
5	Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
6	Citizenship or place of organization DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:	7 Sole Voting Power 0.00 8 Shared Voting Power 25,315,646.00 9 Sole Dispositive Power 0.00 10 Shared Dispositive Power 25,315,646.00
11	Aggregate amount beneficially owned by each reporting person 25,315,646.00
12	Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
13	Percent of class represented by amount in Row (11) 15.0 %
14	Type of Reporting Person (See Instructions) PN

SCHEDULE 13D

CUSIP No.

1	Name of reporting person GAP Coinvestments III, LLC
2	Check the appropriate box if a member of a Group (See Instructions)   (a)   (b)
3	SEC use only
4	Source of funds (See Instructions) OO
5	Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
6	Citizenship or place of organization DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:	7 Sole Voting Power 0.00 8 Shared Voting Power 25,315,646.00 9 Sole Dispositive Power 0.00 10 Shared Dispositive Power 25,315,646.00
11	Aggregate amount beneficially owned by each reporting person 25,315,646.00
12	Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
13	Percent of class represented by amount in Row (11) 15.0 %
14	Type of Reporting Person (See Instructions) OO

SCHEDULE 13D

CUSIP No.

1	Name of reporting person GAP Coinvestments IV, LLC
2	Check the appropriate box if a member of a Group (See Instructions)   (a)   (b)
3	SEC use only
4	Source of funds (See Instructions) OO
5	Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
6	Citizenship or place of organization DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:	7 Sole Voting Power 0.00 8 Shared Voting Power 25,315,646.00 9 Sole Dispositive Power 0.00 10 Shared Dispositive Power 25,315,646.00
11	Aggregate amount beneficially owned by each reporting person 25,315,646.00
12	Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
13	Percent of class represented by amount in Row (11) 15.0 %
14	Type of Reporting Person (See Instructions) OO

SCHEDULE 13D

CUSIP No.

1	Name of reporting person GAP Coinvestments V, LLC
2	Check the appropriate box if a member of a Group (See Instructions)   (a)   (b)
3	SEC use only
4	Source of funds (See Instructions) OO
5	Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
6	Citizenship or place of organization DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:	7 Sole Voting Power 0.00 8 Shared Voting Power 25,315,646.00 9 Sole Dispositive Power 0.00 10 Shared Dispositive Power 25,315,646.00
11	Aggregate amount beneficially owned by each reporting person 25,315,646.00
12	Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
13	Percent of class represented by amount in Row (11) 15.0 %
14	Type of Reporting Person (See Instructions) OO

SCHEDULE 13D

CUSIP No.

1	Name of reporting person GAP Coinvestments CDA, L.P.
2	Check the appropriate box if a member of a Group (See Instructions)   (a)   (b)
3	SEC use only
4	Source of funds (See Instructions) OO
5	Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
6	Citizenship or place of organization DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:	7 Sole Voting Power 0.00 8 Shared Voting Power 25,315,646.00 9 Sole Dispositive Power 0.00 10 Shared Dispositive Power 25,315,646.00
11	Aggregate amount beneficially owned by each reporting person 25,315,646.00
12	Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
13	Percent of class represented by amount in Row (11) 15.0 %
14	Type of Reporting Person (See Instructions) PN

SCHEDULE 13D

CUSIP No.

1	Name of reporting person General Atlantic GenPar (Lux) SCSp
2	Check the appropriate box if a member of a Group (See Instructions)   (a)   (b)
3	SEC use only
4	Source of funds (See Instructions) OO
5	Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
6	Citizenship or place of organization LUXEMBOURG
Number of Shares Beneficially Owned by Each Reporting Person With:	7 Sole Voting Power 0.00 8 Shared Voting Power 25,315,646.00 9 Sole Dispositive Power 0.00 10 Shared Dispositive Power 25,315,646.00
11	Aggregate amount beneficially owned by each reporting person 25,315,646.00
12	Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
13	Percent of class represented by amount in Row (11) 15.0 %
14	Type of Reporting Person (See Instructions) PN

SCHEDULE 13D

CUSIP No.

1	Name of reporting person General Atlantic (Lux) S.a r.l.
2	Check the appropriate box if a member of a Group (See Instructions)   (a)   (b)
3	SEC use only
4	Source of funds (See Instructions) OO
5	Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
6	Citizenship or place of organization LUXEMBOURG
Number of Shares Beneficially Owned by Each Reporting Person With:	7 Sole Voting Power 0.00 8 Shared Voting Power 25,315,646.00 9 Sole Dispositive Power 0.00 10 Shared Dispositive Power 25,315,646.00
11	Aggregate amount beneficially owned by each reporting person 25,315,646.00
12	Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
13	Percent of class represented by amount in Row (11) 15.0 %
14	Type of Reporting Person (See Instructions) HC

SCHEDULE 13D

CUSIP No.

1	Name of reporting person General Atlantic GenPar (Bermuda), L.P.
2	Check the appropriate box if a member of a Group (See Instructions)   (a)   (b)
3	SEC use only
4	Source of funds (See Instructions) OO
5	Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
6	Citizenship or place of organization BERMUDA
Number of Shares Beneficially Owned by Each Reporting Person With:	7 Sole Voting Power 0.00 8 Shared Voting Power 25,315,646.00 9 Sole Dispositive Power 0.00 10 Shared Dispositive Power 25,315,646.00
11	Aggregate amount beneficially owned by each reporting person 25,315,646.00
12	Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
13	Percent of class represented by amount in Row (11) 15.0 %
14	Type of Reporting Person (See Instructions) PN

SCHEDULE 13D

CUSIP No.

1	Name of reporting person GAP (Bermuda) L.P.
2	Check the appropriate box if a member of a Group (See Instructions)   (a)   (b)
3	SEC use only
4	Source of funds (See Instructions) OO
5	Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
6	Citizenship or place of organization BERMUDA
Number of Shares Beneficially Owned by Each Reporting Person With:	7 Sole Voting Power 0.00 8 Shared Voting Power 25,315,646.00 9 Sole Dispositive Power 0.00 10 Shared Dispositive Power 25,315,646.00
11	Aggregate amount beneficially owned by each reporting person 25,315,646.00
12	Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
13	Percent of class represented by amount in Row (11) 15.0 %
14	Type of Reporting Person (See Instructions) PN

SCHEDULE 13D

Item 1.	Security and Issuer
(a)	Title of Class of Securities: Common stock, par value $0.0001 per share
(b)	Name of Issuer: Liftoff Mobile, Inc.
(c)	Address of Issuer's Principal Executive Offices: 900 MIDDLEFIELD ROAD, REDWOOD CITY, CALIFORNIA , 94063.
Item 1 Comment: This Schedule 13D (this "Statement") relates to the beneficial ownership of the Reporting Persons (defined below) of the common stock, par value $0.0001 per share (the "common stock") of Liftoff Mobile, Inc., a company incorporated in Delaware (the "Company"), whose principal executive offices are located at 900 Middlefield Road, Redwood City, CA 94063. The Reporting Persons were initially eligible to file a Schedule 13G under Rule 13d-1(d) of the Exchange Act. On June 5, 2026, the Reporting Persons acquired shares of the Company's common stock in connection with the Company's initial public offering (the "IPO"). These shares of common stock, together with all other acquisitions by the Reporting Persons of shares of common stock during the preceding twelve months, exceed 2 percent of the outstanding shares of common stock. Therefore, the Reporting Persons are no longer eligible to file a Schedule 13G under Rule 13d-1(d) and are now filing this Statement.
Item 2.	Identity and Background
(a)	This Statement is being filed by a "group," as defined in Rule 13d-5 of the General Rules and Regulations promulgated under the Exchange Act. The members of the group are: (i) General Atlantic, L.P., a Delaware limited partnership ("GA LP"); (ii) General Atlantic (SPV) GP, LLC, a Delaware limited liability corporation ("GA SPV"); (iii) General Atlantic Partners 100, L.P., a Delaware limited partnership ("GAP 100"); (iv) General Atlantic (LFT), L.P., a Delaware limited partnership ("GA LFT"); (v) General Atlantic Partners (Lux), SCSp, a Luxembourg special limited partnership ("GAP Lux"); (vi) General Atlantic GenPar, L.P., a Delaware limited partnership ("GA GenPar"); (vii) GAP Coinvestments III, LLC, a Delaware limited liability corporation ("GAPCO III"); (viii) GAP Coinvestments IV, LLC, a Delaware limited liability corporation ("GAPCO IV"); (ix) GAP Coinvestments V, LLC, a Delaware limited liability corporation ("GAPCO V"); (x) GAP Coinvestments CDA, L.P., a Delaware limited partnership ("GAPCO CDA"); (xi) General Atlantic GenPar (Lux), SCSp, a Luxembourg special limited partnership ("GA GenPar Lux"); (xii) General Atlantic (Lux) S.a r.l., a Luxembourg company ("GA Lux"); (xiii) General Atlantic GenPar (Bermuda), L.P., a Bermuda limited partnership ("GenPar Bermuda"); and (xiv) GAP (Bermuda) L.P., a Bermuda limited partnership ("GAP Bermuda"). Each of the foregoing is referred to as a Reporting Person and collectively as the "Reporting Persons." GAP 100 and GAP Lux are collectively referred to as the "GA Funds." GAPCO III, GAPCO IV, GAPCO V and GAPCO CDA are collectively referred to as the "Sponsor Coinvestment Funds." The address of GenPar Bermuda and GAP Bermuda is Clarendon House, 2 Church Street, Hamilton HM 11, Bermuda. The address of GAP Lux, GA GenPar Lux and GA Lux is 412F, Route d'Esch, L-1471 Luxembourg. The address of GAP 100, GA SPV, GA GenPar, GA LFT and GA LP and each of the Sponsor Coinvestment Funds is c/o General Atlantic Service Company, L.P., 55 East 52nd Street, 33rd Floor, New York, NY 10055. Each of the Reporting Persons is engaged in acquiring, holding and disposing of interests in various companies for investment purposes. The following investment funds share beneficial ownership of the common stock held of record by GA LFT: the GA Funds and the Sponsor Coinvestment Funds. The general partner of GAP 100 is GA GenPar. GA LP, which is controlled by the Partnership Committee of GASC MGP, LLC (the "Partnership Committee"), is the managing member of GAPCO III, GAPCO IV, and GAPCO V, the general partner of GAPCO CDA and GA GenPar, and is the sole member of GA SPV. The general partner of GA LFT is GA SPV. The general partner of GAP Lux is GA GenPar Lux, and the general partner of GA GenPar Lux is GA Lux. The sole shareholder of GA Lux is GenPar Bermuda. GAP Bermuda, which is ultimately controlled by the Partnership Committee, is the general partner of GenPar Bermuda. As of the date hereof, there are six members of the Partnership Committee. Each of the members of the Partnership Committee disclaims ownership of the shares except to the extent that he has a pecuniary interest therein. The information required by General Instruction C to Schedule 13D is attached hereto as Schedule A and is hereby incorporated by reference. The present principal occupation or employment of each of the members of the Partnership Committee is as a managing director of GA LP.
(b)	See Item 2(a).
(c)	See Item 2(a).
(d)	None of the Reporting Persons and none of the individuals listed on Schedule A have, during the last five years, been (i) convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors) or (ii) a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.
(e)	See Item 2(d).
(f)	See Item 2(a).
Item 3.	Source and Amount of Funds or Other Consideration
	In connection with the pricing of the IPO on June 3, 2026, 425,000 shares of Series A Redeemable Convertible Preferred Stock of the Company held directly by GA LFT converted into 24,011,299 shares of common stock. In addition, GA LFT purchased 1,304,347 shares of common stock on June 5, 2026 at a price of $23.00 per share in the IPO. The funds to purchase the shares of common stock were obtained from contributions from the GA Funds and Sponsor Coinvestment Funds.
Item 4.	Purpose of Transaction
	The Reporting Persons acquired the common stock reported herein for investment purposes. Consistent with such purposes, the Reporting Persons may engage in communications with, without limitation, one or more shareholders of the Company, management of the Company, one or more members of the board of directors of the Company, and may make suggestions concerning the Company's operations, prospects, business and financial strategies, strategic transactions, assets and liabilities, business and financing alternatives, the composition of the board of directors of the Company and such other matters as the Reporting Persons may deem relevant to their investment in the common stock. The Reporting Persons expect that they will, from time to time, review their investment position in the common stock or the Company and may, depending on the Company's performance and other market conditions, increase or decrease their investment position in the common stock. The Reporting Persons may, from time to time, make additional purchases of common stock either in the open market or in privately-negotiated transactions, depending upon the Reporting Persons' evaluation of the Company's business, prospects and financial condition, the market for the common stock, other opportunities available to the Reporting Persons, general economic conditions, stock market conditions and other factors. Depending upon the factors noted above, the Reporting Persons may also decide to hold or dispose of all or part of their investments in the common stock and/or enter into derivative transactions with institutional counterparties with respect to the Company's securities, including the common stock. Except as set forth in this Item 4 or Item 6 below, the Reporting Persons have no present plans or proposals that relate to, or that would result in, any of the actions specified in clauses (a) through (j) of Item 4 of Schedule 13D of the Exchange Act.
Item 5.	Interest in Securities of the Issuer
(a)	The percentages used herein are calculated based on an aggregate of 169,330,527 shares of common stock reported by the Company to be outstanding as reflected in the Company's prospectus filed under Rule 424(b)(4) filed with the U.S. Securities and Exchange Commission (the "SEC") on June 4, 2026, after giving effect to the IPO (including the exercise in full of the underwriters' over-allotment option as announced by the Company on June 5, 2026). By virtue of the fact that (i) the GA Funds and the Sponsor Coinvestment Funds contributed the capital to fund the purchases, and share beneficial ownership of, the common stock held of record by GA LFT, (ii) the general partner of GA LFT is GA SPV, (iii) the general partner of GAP Lux is GA GenPar Lux, and the general partner of GA GenPar Lux is GA Lux., (iv) the sole shareholder of GA Lux is GenPar Bermuda, (v) GAP Lux has appointed Carne Global Fund Management (Luxembourg) S.A. (the "AIFM") as the alternative investment fund manager of GAP Lux pursuant to an alternative investment fund management agreement to undertake all functions required of an external alternative investment fund manager under the Luxembourg law of 12 July 2013 on alternative investment fund managers, as amended from time to time and GAP Lux has also entered into a delegated portfolio management and distribution agreement with the AIFM and GASC MGP, LLC ("GASC") in order to appoint GASC to act as the portfolio manager of GAP Lux, (vi) the general partner of GAP 100 is GA GenPar, and the general partner of GA GenPar is GA LP, (vii) GA LP, which is controlled by the Partnership Committee, is the managing member of GAPCO III, GAPCO IV, and GAPCO V, the general partner of GAPCO CDA, and is the sole member of GA SPV, (viii) GAP Bermuda, which is ultimately controlled by the Partnership Committee, is the general partner of GenPar Bermuda and (ix) GASC, with respect to GAP Lux, is controlled by the Partnership Committee, the Reporting Persons may be deemed to have the power to vote and direct the disposition of the common stock owned of record by GA LFT. As a result, as of the date hereof, each of the Reporting Persons may be deemed to beneficially own the shares of common stock indicated on row (11) on such Reporting Person's cover page included herein.
(b)	Each of the Reporting Persons has the shared power to vote or direct the vote and the shared power to dispose or to direct the disposition of the shares of common stock indicated on row (8) on such Reporting Person's cover page that may be deemed to be beneficially owned by each of them.
(c)	Except as set forth in Item 3, or otherwise herein, to the knowledge of the Reporting Persons with respect to the persons named in response to Item 5(a), none of the persons named in response to Item 5(a) has effected any transactions during the past 60 days.
(d)	No person other than the persons listed is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, any securities owned by any member of the group.
(e)	Not applicable.
Item 6.	Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer
	Please see Item 5(a), which is hereby incorporated by reference. The GA Funds, the Sponsor Coinvestment Funds and the members of the Partnership Committee may, from time to time, consult among themselves and coordinate the voting and disposition of shares of common stock held of record by GA LFT as well as such other action taken on behalf of the Reporting Persons with respect to the common stock held by the Reporting Persons as they deem to be in the collective interest of the Reporting Persons. The Reporting Persons entered into a Joint Filing Agreement on June 12, 2026 (the "Joint Filing Agreement"), pursuant to which they have agreed to file this Statement jointly in accordance with the provisions of Rule 13d-1(k)(1) under the Exchange Act. A copy of the Joint Filing Agreement is attached hereto as Exhibit 1. In connection with the IPO, the Company, GA LFT and the other stockholders of the Company named therein entered into that certain Registration Rights Agreement (the "Registration Rights Agreement"), dated as of June 3, 2026. The Registration Rights Agreement grants the Reporting Persons certain customary demand registration and piggyback registration rights with respect to shares of common stock, in each case subject to the terms and conditions of the Registration Rights Agreement. The foregoing description of the Registration Rights Agreement does not purport to be complete and is qualified in its entirety by reference to the Registration Rights Agreement. A copy of the Registration Rights Agreement is filed as Exhibit 2 hereto and is incorporated herein by reference. In addition, GA LFT entered into a customary lock-up agreement with the underwriters in the IPO (the "Lock-Up Agreement"), pursuant to which it agreed, subject to specified exceptions, not to offer, sell, contract to sell, pledge, grant any option to purchase, make any short sale or otherwise dispose of any shares of common stock, or any options or warrants to purchase any shares of common stock, or any securities convertible into, exchangeable for or that represent the right to receive shares of common stock, whether now owned or hereinafter acquired, owned directly by GA LFT (including holding as a custodian) or with respect to which GA LFT has beneficial ownership within the rules and regulations of the SEC, for a period commencing on February 5, 2026 and ending 180 days after June 3, 2026, the date of the final prospectus with respect to the IPO. The foregoing description of the Lock-Up Agreement does not purport to be complete and is qualified in its entirety by reference to the Lock-Up Agreement. A copy of the Lock-Up Agreement is filed as Exhibit 3 hereto and is incorporated herein by reference. Further, in connection with the IPO, the Company and GA LFT entered into that certain Stockholders Agreement (the "Stockholders Agreement"), dated as of June 3, 2026. The Stockholders Agreement grants the Reporting Persons certain governance rights, including the right to designate one (1) individual as a director to the Company's board of directors if GA LP and its affiliates beneficially own at least 5% of the outstanding shares of common stock. In addition, if GA LP and its affiliates together beneficially own at least 2% of the outstanding shares of common stock, GA LP and its affiliates will have the right to appoint a non-voting observer to attend meetings of the Company's board of directors. Although General Atlantic may be permitted to designate a director pursuant to the foregoing provisions, there is no requirement that General Atlantic designate such director. Such director may be removed only with the consent of General Atlantic. General Atlantic has certain customary information rights pursuant to the Stockholders Agreement. The foregoing description of the Stockholders Agreement does not purport to be complete and is qualified in its entirety by reference to the Stockholders Agreement. A copy of the Stockholders Agreement is filed as Exhibit 4 hereto and is incorporated herein by reference. Except as described above, there are no contracts, arrangements, understandings or relationships (legal or otherwise) between the Reporting Persons or, to the best of their knowledge, any of the persons named in Schedule A hereto and any other person with respect to any securities of the Company, including, but not limited to, transfer or voting of any securities, finder's fees, joint ventures, loan or option arrangements, puts or calls, guarantees of profits, division of profits or losses, or the giving or withholding of proxies.
Item 7.	Material to be Filed as Exhibits.
	Exhibit 1: Agreement relating to the filing of the joint acquisition statements as required by Rule 13d-1(k)(1) under the Exchange Act. Exhibit 2: Registration Rights Agreement between the Company and General Atlantic (LFT), L.P. and certain other shareholders of the Company party thereto, dated as of June 3, 2026 (incorporated by reference to exhibit 10.1 to the Company's Current Report on Form 8-K, filed with the SEC on June 8, 2026). Exhibit 3: Lock-Up Agreement between the Representatives named therein and General Atlantic (LFT), L.P., dated as of February 5, 2026. Exhibit 4: Stockholders Agreement between the Company and General Atlantic (LFT), L.P., dated as of June 3, 2026 (incorporated by reference to exhibit 10.3 to the Company's Current Report on Form 8-K, filed with the SEC on June 8, 2026).

SIGNATURE
	After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

GENERAL ATLANTIC, L.P.

Signature: /s/ Michael Gosk Name/Title: Michael Gosk, Managing Director Date: 06/12/2026

General Atlantic (SPV) GP, LLC

Signature: /s/ Michael Gosk Name/Title: Michael Gosk, Managing Director of General Atlantic, L.P., its sole member Date: 06/12/2026

General Atlantic Partners 100, L.P.

Signature: /s/ Michael Gosk Name/Title: Michael Gosk, Managing Director of General Atlantic, L.P., the general partner of General Atlantic GenPar, L.P., its general partner Date: 06/12/2026

General Atlantic (LFT), L.P.

Signature: /s/ Michael Gosk Name/Title: Michael Gosk, Managing Director of General Atlantic, L.P., the sole member of General Atlantic (SPV) GP, LLC, its general partner Date: 06/12/2026

General Atlantic Partners (Lux) SCSp

Signature: /s/ Ingrid van der Hoorn Name/Title: Ingrid van der Hoorn, Manager A of General Atlantic (Lux) S.a r.l., the general partner of General Atlantic GenPar (Lux) SCSp, its general partner Date: 06/12/2026

Signature: /s/ William Blackwell Name/Title: William Blackwell, Manager B of General Atlantic (Lux) S.a r.l., the general partner of General Atlantic GenPar (Lux) SCSp, its general partner Date: 06/12/2026

General Atlantic GenPar, L.P.

Signature: /s/ Michael Gosk Name/Title: Michael Gosk, Managing Director of General Atlantic, L.P., its general partner Date: 06/12/2026

GAP Coinvestments III, LLC

Signature: /s/ Michael Gosk Name/Title: Michael Gosk, Managing Director of General Atlantic, L.P., its managing member Date: 06/12/2026

GAP Coinvestments IV, LLC

Signature: /s/ Michael Gosk Name/Title: Michael Gosk, Managing Director of General Atlantic, L.P., its managing member Date: 06/12/2026

GAP Coinvestments V, LLC

Signature: /s/ Michael Gosk Name/Title: Michael Gosk, Managing Director of General Atlantic, L.P., its managing member Date: 06/12/2026

GAP Coinvestments CDA, L.P.

Signature: /s/ Michael Gosk Name/Title: Michael Gosk, Managing Director of General Atlantic, L.P., its general partner Date: 06/12/2026

General Atlantic GenPar (Lux) SCSp

Signature: /s/ Ingrid van der Hoorn Name/Title: Ingrid van der Hoorn, Manager A of General Atlantic (Lux) S.a r.l., its general partner Date: 06/12/2026

Signature: /s/ William Blackwell Name/Title: William Blackwell, Manager B of General Atlantic (Lux) S.a r.l., its general partner Date: 06/12/2026

General Atlantic (Lux) S.a r.l.

Signature: /s/ Ingrid van der Hoorn Name/Title: Ingrid van der Hoorn, Manager A Date: 06/12/2026

Signature: /s/ William Blackwell Name/Title: William Blackwell, Manager B Date: 06/12/2026

General Atlantic GenPar (Bermuda), L.P.

Signature: /s/ Michael Gosk Name/Title: Michael Gosk, Managing Director of GAP (Bermuda) GP Limited, the general partner of GAP (Bermuda) L.P., its general partner Date: 06/12/2026

GAP (Bermuda) L.P.

Signature: /s/ Michael Gosk Name/Title: Michael Gosk, Managing Director of GAP (Bermuda) GP Limited, its general partner Date: 06/12/2026

SCHEDULE A

Members of the Partnership Committee (as of the date hereof)

EXHIBIT 1

JOINT ACQUISITION STATEMENT

PURSUANT TO RULE 13D-1(k)(1)

The undersigned acknowledge and agree that the foregoing statement on Schedule 13D is filed on behalf of each of the undersigned and that all subsequent amendments to this statement on Schedule 13D shall be filed on behalf of each of the undersigned without the necessity of filing additional joint acquisition statements. The undersigned acknowledge that each shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning him, her or it contained herein, but shall not be responsible for the completeness and accuracy of the information concerning the other entities or persons, except to the extent that he, she or it knows or has reason to believe that such information is accurate.

Dated as of June 12, 2026

EXHIBIT 3

Liftoff Mobile, Inc.

Lock-Up Agreement

February 5, 2026

Goldman Sachs & Co. LLC

Jefferies LLC

Morgan Stanley & Co. LLC

As representatives (the “Representatives”) of the several Underwriters

named in Schedule I of the Underwriting Agreement

c/o Goldman Sachs & Co. LLC

200 West Street

New York, New York 10282

c/o Jefferies LLC

520 Madison Avenue

New York, New York 10022

c/o Morgan Stanley & Co. LLC

1585 Broadway

New York, New York 10036

Re: Liftoff Mobile, Inc. - Lock-Up Agreement

Ladies and Gentlemen:

The undersigned understands that you, as representatives (the “Representatives”), propose to enter into an Underwriting Agreement (the “Underwriting Agreement”) on behalf of the several Underwriters named in Schedule I to such agreement (collectively, the “Underwriters”), with Liftoff Mobile, Inc., a Delaware corporation (the “Company”), and the Selling Stockholders named in Schedule II to such agreement, providing for a public offering (the “Offering”) of the common stock, par value $0.0001 per share (the “Common Stock”), of the Company (the “Shares”) pursuant to a Registration Statement on Form S-1 (the “Registration Statement”) to be filed with the Securities and Exchange Commission (the “SEC”).

In consideration of the agreement by the Underwriters to offer and sell the Shares, and of other good and valuable consideration the receipt and sufficiency of which is hereby acknowledged, the undersigned agrees that, during the period beginning from the date of this agreement (the “Lock-Up Agreement”) and continuing to and including the date that is 180 days after the date set forth on the final prospectus used to sell the Shares (the “Lock-Up Period”), the undersigned will not offer, sell, contract to sell, pledge, grant any option to purchase, make any short sale or otherwise dispose of any shares of Common Stock, of the Company, or any options or warrants to purchase any shares of Common Stock of the Company, or any securities convertible into, exchangeable for or that represent the right to receive shares of Common Stock of the Company, whether now owned or hereinafter acquired, owned directly by the undersigned (including holding as a custodian) or with respect to which the undersigned has beneficial ownership within the rules and regulations of the SEC (collectively the “Undersigned’s Securities”). The foregoing restriction is expressly agreed to preclude the undersigned from engaging in any hedging or other transaction which is designed to or which reasonably could be expected to lead to or result in a sale or disposition of the Undersigned’s Securities even if the Undersigned’s Securities would be disposed of by someone other than the

undersigned. Such prohibited hedging or other transactions would include without limitation any short sale or any purchase, sale or grant of any right (including without limitation any put or call option) with respect to any of the Undersigned’s Securities or with respect to any security that includes, relates to, or derives any significant part of its value from the Undersigned’s Securities.

If the undersigned is an officer or director of the Company, (i) the Representatives agree that, at least three business days before the effective date of any release or waiver of the foregoing restrictions by any two Representatives, on behalf of the Underwriters, in connection with a transfer of shares of Common Stock, the Representatives will notify the Company of the impending release or waiver, provided, that the failure to provide such notice shall not give rise to any claim or liability against the Representatives or the Underwriters and (ii) if so notified, the Company has agreed in the Underwriting Agreement to announce the impending release or waiver by press release through a major news service at least two business days before the effective date of the release or waiver. Any release or waiver granted hereunder by any two Representatives, on behalf of the Underwriters, to any such officer or director shall only be effective two business days after the publication date of such press release. The provisions of this paragraph will not apply if (a) the release or waiver is effected solely to permit a transfer not for consideration and (b) the transferee has agreed in writing to be bound by the same terms described in this Lock-Up Agreement to the extent and for the duration that such terms remain in effect at the time of the transfer.

In the event of any release or waiver of the foregoing restrictions in respect of shares of Common Stock held by an affiliate of Blackstone Inc., an affiliate of General Atlantic (LFT), L.P. and/or Mark Ellis, Phil Crosby or Harry Robertson, the Representatives agree that shares of Common Stock held by the undersigned shall be immediately, fully and irrevocably released in the same manner and on the same terms from any remaining restrictions on a pro rata basis. The Representatives shall use commercially reasonable efforts to notify the undersigned within one business day of the occurrence of any such release or waiver.

Notwithstanding the foregoing, the undersigned may transfer the Undersigned’s Securities:

of shares of capital stock if, after such transfer, such person or group of affiliated persons would hold at least a majority of the outstanding voting securities of the Company (or the surviving entity)); provided that in the event that such tender offer, merger, consolidation or other similar transaction is not completed, the Undersigned’s Securities shall remain subject to the provisions of this Lock-Up Agreement; and/or

provided that:

Notwithstanding the foregoing, clauses (1)(a) and 2(b) above shall not apply with respect to any transfer of shares of Common Stock to charitable organization transferees or recipients (including any direct or indirect member or partner of the undersigned that receives such shares of Common Stock pursuant to a distribution in-kind to such member or partner and is subject to restrictions requiring such shares of Common Stock to be transferred only to charitable organizations pursuant to clause (ii) above) in an aggregate amount, together with any such transfers by the undersigned and the undersigned’s affiliates pursuant to any substantially similar lock-up agreement with the Representatives, not to exceed 1.0% of the outstanding shares of Common Stock. For the avoidance of doubt, any transfer of shares of Common Stock to a charitable organization transferee or recipient that has agreed in writing to be bound by the same terms described in this Lock-Up Agreement to the extent and for the duration that such terms remain in effect at the time of the transfer shall not count towards the percentage in the preceding sentence.

In addition, notwithstanding the foregoing, if the undersigned is a corporation, the corporation may transfer the Undersigned’s Securities to any wholly owned subsidiary of such corporation; provided, however, that in any such case, it shall be a condition to the transfer that the transferee execute an agreement stating that the transferee is

receiving and holding such shares of Common Stock subject to the provisions of this Lock-Up Agreement and there shall be no further transfer of such shares of Common Stock except in accordance with this Lock-Up Agreement.

The restrictions described in this Lock-Up Agreement shall not apply to the establishment of a trading plan pursuant to Rule 10b5-1 under the Exchange Act, provided that (i) no transfers occur under such plan during the Lock-Up Period and (ii) no public announcement, filing or report under the Exchange Act shall be voluntarily made by any person in connection therewith during the Lock-Up Period (other than general disclosure in Company periodic reports to the effect that Company directors and officers may enter into such trading plans from time to time) and, if any announcement, filing or report shall be legally required during the Lock-Up Period, such announcement, filing or report shall clearly indicate therein that none of the securities subject to such plan may be transferred, sold, or otherwise disposed of pursuant to such plan until after expiration of the Lock-Up Period.

For purposes of this Lock-Up Agreement, “immediate family” shall mean any relationship by blood, marriage or adoption, not more remote than first cousin.

The restrictions described in this Lock-Up Agreement shall not apply to any reclassification or conversion of Shares, provided that, such Shares shall be subject to the provisions of this Lock-Up Agreement.

In furtherance of the foregoing, the Company, and any duly appointed transfer agent for the registration or transfer of the securities described herein, are hereby authorized to decline to make any transfer of securities if such transfer would constitute a violation or breach of this Lock-Up Agreement.

The undersigned hereby represents and warrants that the undersigned has full power and authority to enter into this Lock-Up Agreement. All authority herein conferred or agreed to be conferred and any obligations of the undersigned shall be binding upon the successors, assigns, heirs or personal representatives of the undersigned. Any signature to this Lock-Up Agreement may be delivered by facsimile, electronic mail (including pdf) or any electronic signature complying with the U.S. federal ESIGN Act of 2000 or the New York Electronic Signature and Records Act or other transmission method and any counterpart so delivered shall be deemed to have been duly and validly delivered and be valid and effective for all purposes to the fullest extent permitted by applicable law.

The undersigned acknowledges and agrees that the Representatives and the other Underwriters have not provided any recommendation or investment advice nor have the Underwriters solicited any action from the undersigned with respect to the Offering and the undersigned has consulted their own legal, accounting, financial, regulatory and tax advisors to the extent deemed appropriate. The undersigned further acknowledges and agrees that, although the Representatives may be required or choose to provide certain Regulation Best Interest and Form CRS disclosures to you in connection with the Offering, the Representatives and the other Underwriters are not making a recommendation to you to enter into this Lock-Up Agreement, and nothing set forth in such disclosures is intended to suggest that the Representatives or any Underwriter is making such a recommendation.

The undersigned understands that, if (i) the Underwriting Agreement (other than the provisions which survive termination under the terms thereof) shall terminate or be terminated prior to payment for the delivery of the Shares to be sold thereunder, (ii) the Registration Statement is withdrawn by the Company, (iii) the Company notifies the Representatives (or the Representatives notify the Company) in writing that it does not intend to proceed with the Offering, or (iv) the Underwriting Agreement is not executed by June 30, 2026, the undersigned shall be released from all obligations under this Lock-Up Agreement and this Lock-Up Agreement shall be of no further effect.

This Lock-Up Agreement and any claim, controversy or dispute arising under or related to this Lock-Up Agreement shall be governed by and construed in accordance with the laws of the State of New York.

[Remainder of Page Intentionally Left Blank]

The undersigned understands that the Company and the Underwriters are relying upon this Lock-Up Agreement in proceeding toward consummation of the Offering. The undersigned further understands that this Lock-Up Agreement is irrevocable and shall be binding upon the undersigned’s heirs, legal representatives, successors, and assigns.