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  4. [Form 3] Liftoff Mobile, Inc. Initial Statement of Beneficial Ownership

Liftoff Mobile logs 83.8M-share contribution

Redbird ML Holdco reports indirect ownership of over 83.8 million LFTO shares after an internal contribution with no market purchase or sale.

Filing Impact
(High)
Filing Sentiment
(Neutral)
Form Type
3

Rhea-AI Filing Summary

Liftoff Mobile, Inc. (LFTO) has a new Form 3 reporting the initial ownership position of Redbird ML Holdco L.P. and Redbird ML Holdco GP LLC as ten percent owners. On August 24, 2026, BCP Redbird Aggregator L.P. contributed 83,831,109 shares of Liftoff common stock it previously held directly to its wholly-owned subsidiary Redbird ML Holdco L.P., and no securities were purchased, sold, or otherwise transferred in that contribution.

The filing states that these shares are held indirectly through Redbird ML Holdco L.P., and that Redbird ML Holdco GP LLC may be deemed to beneficially own the shares but disclaims beneficial ownership except to the extent of its pecuniary interest.

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Insider Redbird ML Holdco L.P., Redbird ML Holdco GP LLC
Role 10% Owner | 10% Owner
Type Security Shares Price Value
holding Common Stock F1, F2, F3, F4, F5 -- -- --
Holdings After Transaction: Common Stock — 83,831,109 shares (Indirect, See Footnotes)
Footnotes (5)
  1. F1. On August 24, 2026, BCP Redbird Aggregator L.P. contributed 83,831,109 shares of common stock (the "Common Stock") of Liftoff Mobile, Inc. ("Issuer") previously held directly by it to its wholly-owned subsidiary Redbird ML Holdco LP. No securities of the Issuer were purchased, sold or otherwise transferred in connection with the contributions described herein.
  2. F2. Reflects shares of Common Stock of the Issuer held directly by Redbird ML Holdco LP. Redbird ML Holdco GP LLC is the general partner of Redbird ML Holdco LP. BCP Redbird Aggregator L.P. is the sole limited partner of Redbird ML Holdco LP and the managing member of Redbird ML Holdco GP LLC. BCP VII Holdings Manager L.L.C. is the general partner of BCP Redbird Aggregator L.P. Blackstone Management Associates VII L.L.C. is the sole member of BCP VII Holdings Manager L.L.C. BMA VII L.L.C. is the sole member of Blackstone Management Associates VII L.L.C. Blackstone Holdings III L.P. is the managing member of BMA VII L.L.C. Blackstone Holdings III GP L.P. is the general partner of Blackstone Holdings III L.P. Blackstone Holdings III GP Management L.L.C. is the general partner of Blackstone Holdings III GP L.P.
  3. F3. Blackstone Inc. is the sole member of Blackstone Holdings III GP Management L.L.C. The sole holder of the Series II preferred stock of Blackstone Inc. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly-owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.
  4. F4. Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.
  5. F5. Redbird ML Holdco GP LLC may be deemed to beneficially own the shares of Common Stock of the Issuer directly held by Redbird ML Holdco LP but disclaims beneficial ownership of the securities held by Redbird ML Holdco LP, except to the extent of its pecuniary interest therein, and, this filing shall not be deemed an admission that Redbird ML Holdco GP LLC is the beneficial owner of the reported securities for purposes of Section 16 or for any other purpose.
Indirectly held common shares 83,831,109 shares Shares of Liftoff Mobile, Inc. common stock held by Redbird ML Holdco L.P. after the reported contribution
Contribution date August 24, 2026 Date BCP Redbird Aggregator L.P. contributed 83,831,109 Liftoff common shares to Redbird ML Holdco L.P.
Reporting persons 2 entities Redbird ML Holdco L.P. and Redbird ML Holdco GP LLC reported as ten percent owners
beneficially own financial
"Redbird ML Holdco GP LLC may be deemed to beneficially own the shares"
Beneficially own means having the economic rights and risks of a security—such as the right to receive dividends, sell the shares, or profit from price changes—whether or not your name appears on the official share register. Think of it like renting a car: you use it and reap the benefits even if the title lists someone else. Investors care because beneficial ownership determines who truly controls value, must be disclosed under securities rules, and can signal potential influence or trading activity that affects a stock’s price.
pecuniary interest financial
"disclaims beneficial ownership of the securities held ... except to the extent of its pecuniary interest"
wholly-owned subsidiary financial
"contributed 83,831,109 shares ... to its wholly-owned subsidiary Redbird ML Holdco LP"
A wholly-owned subsidiary is a company whose entire ownership is held by another company, called the parent, so the parent controls all shares, board appointments and major decisions. For investors this matters because the subsidiary’s profits, losses, assets and liabilities are treated as part of the parent’s financial picture, affecting valuation and risk exposure — imagine a parent owning a single storefront outright and consolidating its receipts and bills into the parent’s books.
ten percent owner regulatory
"reporting the initial ownership position ... as ten percent owners"
Section 16 regulatory
"for purposes of Section 16 or for any other purpose"
Section 16 is a U.S. securities law rule that governs the trading and disclosure obligations of company insiders — typically officers, directors and large shareholders — to promote transparency and deter unfair profit-taking. It requires insiders to publicly report their stock trades and allows companies or the issuer to reclaim quick, short-term profits from certain insider trades, like a scoreboard and a refund policy that help investors see and limit possible insider advantage.

FAQ

What does LFTO’s new Form 3 for Redbird ML Holdco report?
It reports the initial statement of beneficial ownership for Redbird ML Holdco L.P. and Redbird ML Holdco GP LLC as ten percent owners of Liftoff Mobile, Inc., reflecting an internal contribution of 83,831,109 shares of common stock to Redbird ML Holdco L.P.

How many LFTO shares does Redbird ML Holdco L.P. hold?
Redbird ML Holdco L.P. holds 83,831,109 shares of Liftoff Mobile, Inc. common stock, as reflected in the Form 3 as shares held indirectly with total shares following the transaction of 83,831,109.

Was there a market transaction in LFTO shares on August 24, 2026?
No. The filing states that on August 24, 2026, no securities of Liftoff Mobile, Inc. were purchased, sold, or otherwise transferred; BCP Redbird Aggregator L.P. contributed 83,831,109 shares to its wholly-owned subsidiary Redbird ML Holdco L.P.

Who is reported as a ten percent owner of LFTO in this Form 3?
The Form 3 identifies Redbird ML Holdco L.P. and Redbird ML Holdco GP LLC as ten percent owners of Liftoff Mobile, Inc., with the shares held indirectly through Redbird ML Holdco L.P.

How does Redbird ML Holdco GP LLC describe its beneficial ownership of LFTO shares?
Redbird ML Holdco GP LLC states it may be deemed to beneficially own the Liftoff shares held by Redbird ML Holdco L.P. but disclaims beneficial ownership except to the extent of its pecuniary interest, and the filing is not an admission of beneficial ownership.

What entity originally held the LFTO shares before the contribution to Redbird ML Holdco?
The 83,831,109 shares of Liftoff Mobile, Inc. common stock were previously held directly by BCP Redbird Aggregator L.P. and were contributed to its wholly-owned subsidiary Redbird ML Holdco L.P. on August 24, 2026.

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SEC Form 3
FORM 3UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0104
Estimated average burden
hours per response:0.5
1. Name and Address of Reporting Person*
Redbird ML Holdco L.P.
(Last)(First)(Middle)
C/O BLACKSTONE INC.
345 PARK AVENUE
(Street)
NEW YORK NEW YORK 10154
(City)(State)(Zip)
UNITED STATES
(Country)		2. Date of Event Requiring Statement (Month/Day/Year)
08/24/2026		3. Issuer Name and Ticker or Trading Symbol
Liftoff Mobile, Inc. [ LFTO ]
3a. Foreign Trading Symbol
5. If Amendment, Date of Original Filed (Month/Day/Year)
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
DirectorX10% Owner
Officer (give title below)Other (specify below)
6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
XForm filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock83,831,109ISee Footnotes(1)(2)(3)(4)(5)
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year)3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date ExercisableExpiration DateTitleAmount or Number of Shares
1. Name and Address of Reporting Person*
Redbird ML Holdco L.P.
(Last)(First)(Middle)
C/O BLACKSTONE INC.
345 PARK AVENUE
(Street)
NEW YORK NEW YORK 10154
(City)(State)(Zip)
UNITED STATES
(Country)
Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
Redbird ML Holdco GP LLC
(Last)(First)(Middle)
C/O BLACKSTONE INC.
345 PARK AVENUE
(Street)
NEW YORK NEW YORK 10154
(City)(State)(Zip)
UNITED STATES
(Country)
Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
Explanation of Responses:
1. On August 24, 2026, BCP Redbird Aggregator L.P. contributed 83,831,109 shares of common stock (the "Common Stock") of Liftoff Mobile, Inc. ("Issuer") previously held directly by it to its wholly-owned subsidiary Redbird ML Holdco LP. No securities of the Issuer were purchased, sold or otherwise transferred in connection with the contributions described herein.
2. Reflects shares of Common Stock of the Issuer held directly by Redbird ML Holdco LP. Redbird ML Holdco GP LLC is the general partner of Redbird ML Holdco LP. BCP Redbird Aggregator L.P. is the sole limited partner of Redbird ML Holdco LP and the managing member of Redbird ML Holdco GP LLC. BCP VII Holdings Manager L.L.C. is the general partner of BCP Redbird Aggregator L.P. Blackstone Management Associates VII L.L.C. is the sole member of BCP VII Holdings Manager L.L.C. BMA VII L.L.C. is the sole member of Blackstone Management Associates VII L.L.C. Blackstone Holdings III L.P. is the managing member of BMA VII L.L.C. Blackstone Holdings III GP L.P. is the general partner of Blackstone Holdings III L.P. Blackstone Holdings III GP Management L.L.C. is the general partner of Blackstone Holdings III GP L.P.
3. Blackstone Inc. is the sole member of Blackstone Holdings III GP Management L.L.C. The sole holder of the Series II preferred stock of Blackstone Inc. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly-owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman.
4. Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.
5. Redbird ML Holdco GP LLC may be deemed to beneficially own the shares of Common Stock of the Issuer directly held by Redbird ML Holdco LP but disclaims beneficial ownership of the securities held by Redbird ML Holdco LP, except to the extent of its pecuniary interest therein, and, this filing shall not be deemed an admission that Redbird ML Holdco GP LLC is the beneficial owner of the reported securities for purposes of Section 16 or for any other purpose.
REDBIRD ML HOLDCO LP, By: Redbird ML Holdco GP LLC, its general partner, By: /s/ Robert Brooks Name: Robert Brooks Title: Authorized Signatory09/03/2026
REDBIRD ML HOLDCO GP LLC, By: /s/ Robert Brooks Name: Robert Brooks Title: Authorized Signatory09/03/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)

Source: View Original Filing on SEC EDGAR