Sec Form 3 Filing - General Atlantic (LFT), L.P. @ Liftoff Mobile, Inc. - 2026-06-04

FORM 3 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person General Atlantic (LFT), L.P. 2. Issuer Name and Ticker or Trading Symbol Liftoff Mobile, Inc. [ LFTO] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O GENERAL ATLANTIC SERVICE CO., L.P., 55 EAST 52ND STREET, 33RD FLOOR 3. Date of Earliest Transaction (MM/DD/YY) 06/04/2026 (Street) NEW YORK, NY10055 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock, par value $0.0001 per share ("Common Stock") 24,011,299 ( 1 ) I See footnote ( 2 ) ( 3 ) ( 4 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other General Atlantic (LFT), L.P. C/O GENERAL ATLANTIC SERVICE CO., L.P. 55 EAST 52ND STREET, 33RD FLOOR NEW YORK, NY10055 X X GENERAL ATLANTIC GENPAR (BERMUDA), L.P. C/O CONYERS CLIENT SERVICES LIMITED, CLARENDON HOUSE, 2 CHURCH STREET HAMILTONHM 11 X X GAP (Bermuda) L.P. C/O CONYERS CLIENT SERVICES LIMITED, CLARENDON HOUSE, 2 CHURCH STREET HAMILTONHM 11 X X General Atlantic Partners 100, L.P. C/O GENERAL ATLANTIC SERVICE CO., L.P. 55 EAST 52ND STREET, 33RD FLOOR NEW YORK, NY10055 X X General Atlantic Partners (Lux), SCSp PRINSENGRACHT 769 A AMSTERDAM1017 JZ X X GAP COINVESTMENTS III, LLC C/O GENERAL ATLANTIC SERVICE CO., L.P. 55 EAST 52ND STREET, 33RD FLOOR NEW YORK, NY10055 X X GAP COINVESTMENTS IV, LLC C/O GENERAL ATLANTIC SERVICE CO., L.P. 55 EAST 52ND STREET, 33RD FLOOR NEW YORK, NY10055 X X GAP Coinvestments V, LLC C/O GENERAL ATLANTIC SERVICE CO., L.P. 55 EAST 52ND STREET, 33RD FLOOR NEW YORK, NY10055 X X GAP Coinvestments CDA, L.P. C/O CONYERS CLIENT SERVICES LIMITED, CLARENDON HOUSE, 2 CHURCH STREET HAMILTONHM 11 X X General Atlantic (SPV) GP, LLC C/O GENERAL ATLANTIC SERVICE CO., L.P. 55 EAST 52ND STREET, 33RD FLOOR NEW YORK, NY10055 X X Signatures /s/ Michael Gosk 06/04/2026 Signature of Reporting Person Date /s/ Michael Gosk 06/04/2026 Signature of Reporting Person Date /s/ Michael Gosk 06/04/2026 Signature of Reporting Person Date /s/ Michael Gosk 06/04/2026 Signature of Reporting Person Date /s/ Ingrid van der Hoorn 06/04/2026 Signature of Reporting Person Date /s/ Michael Gosk 06/04/2026 Signature of Reporting Person Date /s/ Michael Gosk 06/04/2026 Signature of Reporting Person Date /s/ Michael Gosk 06/04/2026 Signature of Reporting Person Date /s/ Michael Gosk 06/04/2026 Signature of Reporting Person Date /s/ Michael Gosk 06/04/2026 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Consists of 24,011,299 shares held by General Atlantic (LFT), L.P. ("GA LFT") that were acquired upon the conversion of 425,000 shares of Series A Redeemable Convertible Preferred Stock of the Issuer in connection with the Issuer's initial public offering. ( 2 )The following investment funds share beneficial ownership of the common shares held of record by GA LFT (collectively, the "GA Funds"): General Atlantic Partners 100, L.P. ("GAP 100"), General Atlantic Partners (Lux) SCSp ("GAP Lux"), GAP Coinvestments III, LLC ("GAPCO III"), GAP Coinvestments IV, LLC ("GAPCO IV"), GAP Coinvestments V, LLC ("GAPCO V") and GAP Coinvestments CDA, L.P. ("GAPCO CDA"). (Cont'd in FN3) ( 3 )(Cont'd from FN2) General Atlantic (SPV) GP, LLC ("GA SPV") is the general partner of GA LFT. General Atlantic, L.P. ("GA LP") is the sole member of GA SPV. The general partner of GAP Lux is General Atlantic GenPar (Lux) SCSp ("GA GenPar Lux"), and the general partner of GA GenPar Lux is General Atlantic (Lux) S.a. r.l. ("GA Lux"). The sole shareholder of GA Lux is General Atlantic GenPar (Bermuda), L.P. ("GenPar Bermuda"). (Cont'd in FN4) ( 4 )(Cont'd from F3) GA LP, which is controlled by the Partnership Committee of GASC MGP, LLC (the "GA Partnership Committee"), is the managing member of GAPCO III, GAPCO IV, and GAPCO V and the general partner of GAPCO CDA. GAP (Bermuda) LP ("GAP Bermuda"), which is also controlled by the Partnership Committee, is the general partner of GenPar Bermuda. The general partner of GAP 100 is General Atlantic GenPar, L.P. ("GA GenPar"), and the general partner of GA GenPar is GA LP. There are six members of the GA Partnership Committee. Each of the members of the GA Partnership Committee disclaims ownership of the shares except to the extent that he has a pecuniary interest therein.

Remarks: GA LP, GA SPV, GA GenPar, GA GenPar Lux, GA Lux, GenPar Bermuda, GAP Bermuda, GA LFT and the GA Funds may be deemed to be members of a "group" for the purposes of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). Each reporting person disclaims beneficial ownership of any securities deemed to be owned by the group that are not directly owned by the reporting person. This report shall not be deemed an admission that the reporting persons are a member of a group or the beneficial owner of any securities not directly owned by the reporting person. Each of the reporting persons is a director-by-deputization solely for purposes of Section 16 of the Exchange Act. // Form 1 of 2

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