RTW funds report 4.9% Apogee Therapeutics (APGE) ownership stake

Rhea-AI Filing Summary

RTW Investments, LP and its managing partner Roderick Wong, M.D. report beneficial ownership of Apogee Therapeutics common stock. They disclose indirect control over 2,712,097 shares, representing 4.9% of the outstanding common stock, based on 54,833,587 shares outstanding as of November 3, 2025.

The shares are held by RTW-managed funds, with RTW and Dr. Wong sharing voting and dispositive power and no sole authority. They state the position is held in the ordinary course of business and not for the purpose of changing or influencing control of Apogee Therapeutics.

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Accepted by SEC EDGAR 02/17/2026 - 08:27 AM Learn about SEC filing dates

FAQ

What ownership stake in Apogee Therapeutics (APGE) does RTW report?

RTW Investments and Roderick Wong report beneficial ownership of 2,712,097 Apogee Therapeutics shares, equal to 4.9% of the common stock. This percentage is calculated using 54,833,587 shares outstanding as of November 3, 2025, from Apogee’s Form 10-Q.

Who are the reporting persons in this Apogee Therapeutics (APGE) Schedule 13G/A?

The filing identifies RTW Investments, LP and Roderick Wong, M.D. as reporting persons. RTW acts as investment adviser to certain funds holding Apogee shares, while Dr. Wong is RTW’s Managing Partner and Chief Investment Officer, with shared voting and dispositive power over the reported shares.

How many Apogee Therapeutics (APGE) shares does RTW have voting power over?

RTW Investments and Roderick Wong report shared voting power over 2,712,097 Apogee Therapeutics shares and no sole voting power. They also report identical shared dispositive power over the same number of shares through RTW-managed funds holding the stock.

Is RTW seeking to influence control of Apogee Therapeutics (APGE)?

The filing states the securities were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control of Apogee Therapeutics. It also notes the holdings are not part of any control-related transaction, except certain nomination-related activities.

Who actually holds the Apogee Therapeutics (APGE) shares reported by RTW?

The shares are directly held by certain RTW-managed funds, referred to as the RTW Funds. RTW Investments, as investment adviser, and Roderick Wong, as managing partner and CIO, report beneficial ownership because they share voting and dispositive power over the Apogee shares held by these funds.

Why does the Apogee Therapeutics (APGE) filing emphasize ownership under 5%?

The filing shows a 4.9% beneficial ownership, described as Ownership of 5 percent or less of a class. Staying below the 5% threshold affects regulatory treatment under Section 13 rules, while still reflecting a sizable institutional position in Apogee’s common stock.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

APOGEE THERAPEUTICS, INC.

(Name of Issuer)

Common Stock, $0.00001 par value

(Title of Class of Securities)

03770N101

(CUSIP Number)

12/31/2025

(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 No. 03770N101

1

Names of Reporting Persons

RTW Investments, LP

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

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 2,712,097.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 2,712,097.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,712,097.00

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)

4.9 %

12

Type of Reporting Person (See Instructions)

IA, PN

SCHEDULE 13G

CUSIP No. 03770N101

1

Names of Reporting Persons

Roderick Wong

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 0.00
6	Shared Voting Power 2,712,097.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 2,712,097.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,712,097.00

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)

4.9 %

12

Type of Reporting Person (See Instructions)

HC, IN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: APOGEE THERAPEUTICS, INC.
(b)	Address of issuer's principal executive offices: 221 Crescent Street, Building 17, Suite 102b, Waltham, MA, 02453.
Item 2.
(a)	Name of person filing: This statement is filed by: (i) RTW Investments, LP ("RTW Investments"), a Delaware limited partnership and the investment adviser to certain funds (the "RTW Funds"), with respect to shares of Voting Common Stock, par value $0.00001 per share (the "Shares") of Apogee Therapeutics, Inc. (the "Company") directly held by the RTW Funds; and (ii) Roderick Wong, M.D. ("Dr. Wong"), the Managing Partner and Chief Investment Officer of RTW Investments, with respect to the Shares directly held by the RTW Funds. The foregoing persons are hereinafter sometimes collectively referred to as the "Reporting Persons." The filing of this statement should not be construed as an admission that any of the foregoing persons or any Reporting Person is, for the purposes of Section 13 of the Securities Exchange Act of 1934, as amended, the beneficial owner of the Shares reported herein.
(b)	Address or principal business office or, if none, residence: The address of the business office of each of the Reporting Persons is 40 10th Avenue, Floor 7, New York, New York 10014.
(c)	Citizenship: RTW Investments is a Delaware limited partnership. Dr. Wong is a citizen of the United States.
(d)	Title of class of securities: Common Stock, $0.00001 par value
(e)	CUSIP No.: 03770N101
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: The information required by Item 4(a) is set forth in Rows 5 - 9 of the cover page for each of the Reporting Persons and is incorporated herein by reference. The percentages set forth in Row 11 of the cover pages are calculated based upon 54,833,587 Shares outstanding as of November 3, 2025 as reported in the Company's Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on November 10, 2025.
(b)	Percent of class: RTW Investments: 4.9% Dr. Wong: 4.9%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: RTW Investments: 0 Dr. Wong: 0
	(ii) Shared power to vote or to direct the vote: RTW Investments: 2,712,097 Shares Dr. Wong: 2,712,097 Shares
	(iii) Sole power to dispose or to direct the disposition of: RTW Investments: 0 Dr. Wong: 0
	(iv) Shared power to dispose or to direct the disposition of: RTW Investments: 2,712,097 Shares Dr. Wong: 2,712,097 Shares
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person 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, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. See Item 2. The RTW Funds have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the Shares reported herein.
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:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

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.

RTW Investments, LP

Signature:	/s/ Roderick Wong, M.D.
Name/Title:	Roderick Wong, M.D., Managing Partner
Date:	02/17/2026

Roderick Wong

Signature:	s/ Roderick Wong, M.D.
Name/Title:	Roderick Wong, M.D.
Date:	02/17/2026

Exhibit Information

Exhibit 99.1 Joint Filing Agreement (incorporated by reference to Exhibit 99.1 to the Reporting Persons' Schedule 13G filed with the SEC on February 14, 2025).