Liftoff investor Robertson owns 5.7% stake

Harry James Robertson has filed a Schedule 13G reporting beneficial ownership of 9,663,735 shares of Liftoff Mobile, Inc. common stock, par value $0.0001 per share.

Rhea-AI Filing Summary

Harry James Robertson has filed a Schedule 13G reporting beneficial ownership of 9,663,735 shares of Liftoff Mobile, Inc. common stock, par value $0.0001 per share. These shares represent 5.7% of the company’s outstanding common stock.

Robertson holds sole voting and dispositive power over all 9,663,735 shares and reports no shared voting or dispositive authority. The ownership percentage is calculated based on 169,330,527 shares of common stock outstanding, as reported in a Rule 424(b)(4) prospectus filed on June 4, 2026, after the IPO and full exercise of the underwriters’ over-allotment option announced June 5, 2026.

Key Figures

Beneficial ownership: 9,663,735 shares Percent of class: 5.7% Shares outstanding: 169,330,527 shares +3 more

6 metrics

Beneficial ownership 9,663,735 shares Liftoff Mobile, Inc. common stock beneficially owned by Harry James Robertson

Percent of class 5.7% Portion of Liftoff Mobile, Inc. common stock outstanding represented by Robertson’s holdings

Shares outstanding 169,330,527 shares Aggregate Liftoff Mobile, Inc. common shares outstanding after IPO and over-allotment exercise

Par value $0.0001 per share Par value of Liftoff Mobile, Inc. common stock

Prospectus filing date June 4, 2026 Date of Rule 424(b)(4) prospectus used for shares-outstanding figure

Over-allotment announcement date June 5, 2026 Date company announced full exercise of underwriters’ over-allotment option

Key Terms

beneficially owned, sole dispositive power, Schedule 13G, over-allotment option

4 terms

beneficially owned financial

"Amount beneficially owned: 9,663,735"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

sole dispositive power financial

"Sole Dispositive Power 9,663,735.00"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

Schedule 13G regulatory

"has filed a Schedule 13G reporting beneficial ownership"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

over-allotment option financial

"exercise in full of the underwriters' over-allotment option"

An over-allotment option is a special agreement that allows underwriters to sell more shares than initially planned if demand is high. Think of it like a retailer offering extra units of a popular product to meet additional customer interest. This option helps ensure the full sale is completed and can also give investors extra shares if they want more.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What percentage of Liftoff Mobile, Inc. (LFTO) does Harry James Robertson own?

Harry James Robertson reports beneficial ownership of 9,663,735 shares of Liftoff Mobile, Inc. common stock, representing 5.7% of the outstanding shares, based on 169,330,527 shares outstanding after the IPO and the underwriters’ over-allotment option exercise.

How many Liftoff Mobile, Inc. (LFTO) shares does Harry James Robertson control?

Harry James Robertson beneficially owns 9,663,735 Liftoff Mobile, Inc. common shares. He has sole voting power and sole dispositive power over all of these shares, with no shared voting or shared dispositive authority reported in the Schedule 13G.

What share count did Liftoff Mobile, Inc. (LFTO) report as outstanding for the 5.7% calculation?

The 5.7% ownership figure is based on 169,330,527 Liftoff Mobile, Inc. common shares outstanding, as reported in a Rule 424(b)(4) prospectus filed on June 4, 2026, after the IPO and full exercise of the underwriters’ over-allotment option.

Does Harry James Robertson share voting or dispositive power over LFTO shares?

No. Harry James Robertson reports sole voting power and sole dispositive power over 9,663,735 Liftoff Mobile, Inc. shares, with 0 shares subject to shared voting power or shared dispositive power under the Schedule 13G disclosure.

What is the class of securities Harry James Robertson holds in Liftoff Mobile, Inc. (LFTO)?

Harry James Robertson holds Liftoff Mobile, Inc. common stock, with a par value of $0.0001 per share. His reported position of 9,663,735 shares represents 5.7% of this class of securities based on 169,330,527 shares outstanding.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 07/15/2026 - 03:41 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

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)

53229X101

(CUSIP Number)

06/05/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 53229X101

1

Names of Reporting Persons

Robertson Harry James

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 9,663,735.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 9,663,735.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

9,663,735.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

5.7 %

12

Type of Reporting Person (See Instructions)

IN

Comment for Type of Reporting Person: The percent of class reported in row 9 is 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).

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Liftoff Mobile, Inc.
(b)	Address of issuer's principal executive offices: 900 Middlefield Road, Redwood City, CA 94063
Item 2.
(a)	Name of person filing: Harry James Robertson
(b)	Address or principal business office or, if none, residence: c/o Liftoff Mobile, Inc. 900 Middlefield Road Redwood, City, California, 94063
(c)	Citizenship: United States
(d)	Title of class of securities: Common stock, par value $0.0001 per share
(e)	CUSIP Number(s): 53229X101
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 9,663,735
(b)	Percent of class: 5.7 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 9,663,735
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 9,663,735
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.	Certifications:
	Not Applicable

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.

Robertson Harry James

Signature:	/s/ Harry James Robertson
Name/Title:	Harry James Robertson
Date:	07/15/2026