Atomico holds 4.14M Hinge Health shares, incl. collars (HNGE)

Rhea-AI Filing Summary

Hinge Health, Inc. ownership update: Atomico Advisors IV, Ltd. and affiliated funds report beneficial ownership of 4,139,144 shares of Class A Common Stock, representing 5.1% of total outstanding equity based on 81,301,251 shares as of October 30, 2025.

The holding comprises (i) 3,376,865 shares held by Atomico IV L.P. (including 1,876,570 shares subject to a share collar dated December 8, 2025) and (ii) 762,279 shares held by Atomico IV (Guernsey), L.P. (including 423,430 shares subject to the same share collar).

Insights

Institutional Ownership Analyst

Atomico's stake of 4,139,144 shares equals a 5.1% holding in Hinge Health as of the disclosed snapshot.

Atomico Advisors IV, Ltd. is reported as the general partner of two limited partnerships that together hold the 4,139,144 shares. The filing ties percentage ownership to October 30, 2025 and cites the issuer's quarterly report.

Two share-collar positions dated December 8, 2025 cover a combined 2,299,>000 shares subject to collars (1,876,570 and 423,430); investor reactions will depend on holder trading decisions and collar settlement mechanics.

Securities Compliance Counsel

The Schedule 13G/A lists shared voting and dispositive power for the Reporting Persons and documents chain-of-control via the general partner.

The cover-page comments clarify that Atomico Advisors IV, Ltd. is general partner of the LPs and provides the address and jurisdiction details. The filing includes a reference to an Exhibit 99.1 joint filing agreement.

Filing mechanics appear routine for institutional beneficial-ownership reporting; any regulatory or contractual limits tied to the collars are not disclosed in the excerpt.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Hinge Health, Inc.

(Name of Issuer)

Class A Common Stock, par value $0.00001 per share

(Title of Class of Securities)

11/18/2025

(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)

SCHEDULE 13G

CUSIP Number(s):

1

Names of Reporting Persons

Atomico Advisors IV, Ltd.

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

CAYMAN ISLANDS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 4,139,144.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 4,139,144.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

4,139,144.00

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)

5.1 %

12

Type of Reporting Person (See Instructions)

PN

Comment for Type of Reporting Person: The number of shares beneficially owned consists of (i) 3,376,865 shares of Class A Common Stock held by Atomico IV L.P., of which 1,876,570 shares are subject to a share collar contract dated December 8, 2025, and (ii) 762,279 shares of Class A Common Stock held by Atomico IV (Guernsey), L.P., of which 423,430 shares are subject to a share collar contract dated December 8, 2025. Atomico Advisors IV, Ltd. is the general partner of Atomico IV L.P. and Atomico IV (Guernsey), L.P. Percentage ownership is based on 81,301,251 total shares of Class A Common Stock, Class B Common Stock, and Series E Preferred Stock outstanding as of October 30, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission (the "SEC") on November 7, 2025.

SCHEDULE 13G

CUSIP Number(s):

1

Names of Reporting Persons

Atomico IV, L.P.

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

CAYMAN ISLANDS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 4,139,144.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 4,139,144.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

4,139,144.00

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)

5.1 %

12

Type of Reporting Person (See Instructions)

PN

Comment for Type of Reporting Person: See comments on the cover page by Atomic Advisors IV, Ltd.

SCHEDULE 13G

CUSIP Number(s):

1

Names of Reporting Persons

Atomico IV (Guernsey), L.P.

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

GUERNSEY

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 4,139,144.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 4,139,144.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

4,139,144.00

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)

5.1 %

12

Type of Reporting Person (See Instructions)

PN

Comment for Type of Reporting Person: See comments on the cover page by Atomic Advisors IV, Ltd.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Hinge Health, Inc.
(b)	Address of issuer's principal executive offices: 455 Market Street, Suite 700, San Francisco, California 94105
Item 2.
(a)	Name of person filing: This Statement on Schedule 13G has been filed on behalf of the following persons (each, a "Reporting Person" and collectively, the "Reporting Persons"): 1. Atomico Advisors IV, Ltd. 2. Atomico IV, L.P. 3. Atomico IV (Guernsey), L.P.
(b)	Address or principal business office or, if none, residence: The address for each of Atomico Advisors IV, Ltd. and Atomico IV, L.P. is One Capital Place, Grand Cayman, Cayman Islands KY1-1103. The address for Atomico IV (Guernsey), L.P. is P.O. Box 286, Floor 2 Trafalgar Court, Les Banques, St. Peter Port, Guernsey GY1 4LY.
(c)	Citizenship: See Row 4 of cover page for each Reporting Person.
(d)	Title of class of securities: Class A Common Stock, par value $0.00001 per share
(e)	CUSIP No.: 433313103
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: See Row 9 of cover page for each Reporting Person.
(b)	Percent of class: See Row 11 of cover page for each Reporting Person.
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: See Row 5 of cover page for each Reporting Person.
	(ii) Shared power to vote or to direct the vote: See Row 6 of cover page for each Reporting Person.
	(iii) Sole power to dispose or to direct the disposition of: See Row 7 of cover page for each Reporting Person.
	(iv) Shared power to dispose or to direct the disposition of: See Row 8 of cover page for each Reporting Person.
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.

Atomico Advisors IV, Ltd.

Signature:	/s/ Nicole Ramroop
Name/Title:	Director
Date:	03/09/2026

Atomico IV, L.P.

Signature:	/s/ Nicole Ramroop
Name/Title:	Director of Atomico Advisors IV, Ltd., its general partner
Date:	03/09/2026

Atomico IV (Guernsey), L.P.

Signature:	/s/ Nicole Ramroop
Name/Title:	Director of Atomico Advisors IV, Ltd., its general partner
Date:	03/09/2026

Exhibit Information

Exhibit 99.1 - Joint Filing Agreement (incorporated by reference to Exhibit 99.1 to the Schedule 13G filed by the Reporting Person with the SEC on July 30, 2025).

FAQ

How many Hinge Health (HNGE) shares does Atomico report owning?

Atomico reports beneficial ownership of 4,139,144 shares. The filing attributes this total to Atomico Advisors IV, Ltd. and affiliated limited partnerships as reported in the Schedule 13G/A.

What percentage of Hinge Health (HNGE) does Atomico own?

Atomico's holding represents 5.1% of outstanding equity. That percentage is calculated using 81,301,251 total shares outstanding as of October 30, 2025, per the filing.

Are any Atomico-held Hinge Health (HNGE) shares subject to collars?

Yes — a total of 2,299,>000 shares are subject to share collars. Specifically, 1,876,570 and 423,430 shares are under share collar contracts dated December 8, 2025, per the cover-page comment.

Which Atomico entities are named in the Hinge Health (HNGE) filing?

The filing names Atomico Advisors IV, Ltd., Atomico IV L.P., and Atomico IV (Guernsey), L.P. Atomico Advisors IV, Ltd. is identified as general partner of the two LPs in the Schedule 13G/A.

What basis does the filing use to compute Atomico's ownership percentage?

The percentage is based on 81,301,251 total shares outstanding. That figure is tied to the issuer's Quarterly Report on Form 10-Q referenced in the filing and dated in the exhibit comments.