[SCHEDULE 13G] Whitehawk Therapeutics, Inc. SEC Filing

Rhea-AI Filing Summary

Coastlands-related parties report beneficial ownership of 2,819,215 shares of Whitehawk Therapeutics common stock, representing 5.98% of the outstanding shares based on 47,128,362 shares cited as of August 4, 2025. The holdings are reported across Coastlands Capital LP, Coastlands Capital Partners LP, Coastlands Capital GP LLC, Coastlands Capital LLC and Matthew D. Perry. Voting and dispositive power is reported as shared for most entities, with Coastlands Capital GP LLC showing sole voting and dispositive power in one cover-sheet entry, while other reporting persons indicate shared power. The filing states the securities were acquired and are held in the ordinary course of business and are not intended to change or influence control of the issuer.

Positive

• Material ownership disclosed: Reporting persons own 2,819,215 shares, equating to 5.98% of the class, enhancing market transparency.
• Clear attribution across entities: The filing identifies the adviser, partnership, general partner and control person, clarifying ownership relationships.
• Passive intent declared: The securities are stated to be held in the ordinary course of business and not to effect control, consistent with Schedule 13G treatment.

Negative

• None.

Insights

Financial Analyst

TL;DR A single investor group holds just under 6% of WHWK, disclosed as shared ownership and presented as passive in intent.

The Schedule 13G shows a 5.98% ownership stake, large enough to trigger disclosure but below typical activist thresholds. The split of voting and dispositive power across affiliated entities suggests centralized control through the general partner structure while maintaining adviser/partnership distinctions. This is a routine, material ownership disclosure that increases investor transparency but does not by itself indicate a change in strategic direction or control.

Corporate Governance Expert

TL;DR Reporting structure indicates coordinated ownership via adviser and GP, disclosed as not seeking control.

The filing clarifies roles: the partnership holds the shares for investors, the adviser and GP exercise reported powers, and the named individual is the control person of the related entities. The certification that the position is held in the ordinary course and not for control is typical for a Schedule 13G. Governance implications are limited absent further accumulations or coordination with other investors.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Whitehawk Therapeutics, Inc.

(Name of Issuer)

Common stock

(Title of Class of Securities)

00032Q104

(CUSIP Number)

08/19/2025

(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. 00032Q104

1

Names of Reporting Persons

Coastlands Capital 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 2,819,215.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 2,819,215.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,819,215.00

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)

5.98 %

12

Type of Reporting Person (See Instructions)

IA, PN

Comment for Type of Reporting Person: Percentage calculated based on 47,128,362 shares of Common Stock outstanding on August 4, 2025, as reported in the Form 10-Q filed by the Issuer for the quarter ended June 30, 2025.

SCHEDULE 13G

CUSIP No. 00032Q104

1

Names of Reporting Persons

Coastlands Capital Partners 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 2,819,215.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 2,819,215.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,819,215.00

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)

5.98 %

12

Type of Reporting Person (See Instructions)

PN

Comment for Type of Reporting Person: Percentage calculated based on 47,128,362 shares of Common Stock outstanding on August 4, 2025, as reported in the Form 10-Q filed by the Issuer for the quarter ended June 30, 2025.

SCHEDULE 13G

CUSIP No. 00032Q104

1

Names of Reporting Persons

Coastlands Capital GP LLC

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 2,819,215.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 2,819,215.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,819,215.00

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)

5.98 %

12

Type of Reporting Person (See Instructions)

OO

Comment for Type of Reporting Person: Percentage calculated based on 47,128,362 shares of Common Stock outstanding on August 4, 2025, as reported in the Form 10-Q filed by the Issuer for the quarter ended June 30, 2025.

SCHEDULE 13G

CUSIP No. 00032Q104

1

Names of Reporting Persons

Coastlands Capital LLC

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 2,819,215.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 2,819,215.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,819,215.00

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)

5.98 %

12

Type of Reporting Person (See Instructions)

HC, OO

Comment for Type of Reporting Person: Percentage calculated based on 47,128,362 shares of Common Stock outstanding on August 4, 2025, as reported in the Form 10-Q filed by the Issuer for the quarter ended June 30, 2025.

SCHEDULE 13G

CUSIP No. 00032Q104

1

Names of Reporting Persons

Matthew D. Perry

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 2,819,215.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 2,819,215.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,819,215.00

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)

5.98 %

12

Type of Reporting Person (See Instructions)

HC, IN

Comment for Type of Reporting Person: Percentage calculated based on 47,128,362 shares of Common Stock outstanding on August 4, 2025, as reported in the Form 10-Q filed by the Issuer for the quarter ended June 30, 2025.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Whitehawk Therapeutics, Inc.
(b)	Address of issuer's principal executive offices: 2 HEADQUARTERS PLAZA, EAST BUILDING, 11TH FLOOR, MORRISTOWN, NJ, 07960
Item 2.
(a)	Name of person filing: Coastlands Capital LP, a Delware limited partnership ("Coastlands") Coastlands Capital Partners LP, a Delaware limited partnership (the "Partnership") Coastlands Capital GP LLC, a Delaware limited liability company (the "General Partner") Coastlands Capital LLC, a Delaware limited liability company ("Coastlands GP") Matthew D. Perry Coastlands and the General Partner are the investment adviser and general partner, respectively, of the Partnership. Coastlands GP is the general partner of Coastlands. Mr. Perry is the control person of Coastlands, Coastlands GP and the General Partner. The reporting persons are filing this Schedule 13G jointly, but not as members of a group, and each disclaims membership in a group. Each reporting person also disclaims beneficial ownership of Common Stock except to the extent of that person's pecuniary interest therin. In addition that it is, and it disclaims that it is, a beneficial owner, as defined in Rule 13d-3 under the Act, of any Common Stock covered by this Schedule 13G.
(b)	Address or principal business office or, if none, residence: 601 California Street, Suite 1210, San Francisco, CA 94108
(c)	Citizenship: See Item 4 of the cover sheet for each reporting person.
(d)	Title of class of securities: Common stock
(e)	CUSIP No.: 00032Q104
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: Coastlands: 2,819,215.00 Partnership: 2,819,215.00 General Partner: 2,819,215.00 Coastlands GP: 2,819,215.00 Matthew D. Perry: 2,819,215.00
(b)	Percent of class: Coastlands: 5.98% Partnership: 5.98% General Partner: 5.98% Coastlands GP: 5.98% Matthew D. Perry: 5.98%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: Coastlands: 0 Partnership: 0 General Partner: 0 Coastlands GP: 0 Matthew D. Perry: 0
	(ii) Shared power to vote or to direct the vote: Coastlands: 2,819,215.00 Partnership: 2,819,215.00 General Partner: 2,819,215.00 Coastlands GP: 2,819,215.00 Matthew D. Perry: 2,819,215.00
	(iii) Sole power to dispose or to direct the disposition of: Coastlands: 0 Partnership: 0 General Partner: 0 Coastlands GP: 0 Matthew D. Perry: 0
	(iv) Shared power to dispose or to direct the disposition of: Coastlands: 2,819,215.00 Partnership: 2,819,215.00 General Partner: 2,819,215.00 Coastlands GP: 2,819,215.00 Matthew D. Perry: 2,819,215.00
Item 5.	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. The Partnership holds Common Stock for the benefit of its investors and has the right to receive or the power to direct the receipt of dividens from, or the proceeds from the sale of, Common Stock.
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. By signing below I certify that, to the best of my knowledge and belief, the securities referred to above 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.

Coastlands Capital LP

Signature:	/s/ Mark Shamia
Name/Title:	Chief Operating Officer of the General Partner, Coastlands Capital LLC
Date:	08/25/2025

Coastlands Capital Partners LP

Signature:	/s/ Mark Shamia
Name/Title:	Chief Operating Officer of the General Partners, Coastlands Capital GP LLC
Date:	08/25/2025

Coastlands Capital GP LLC

Signature:	/s/ Mark Shamia
Name/Title:	Chief Operating Officer
Date:	08/25/2025

Coastlands Capital LLC

Signature:	/s/ Mark Shamia
Name/Title:	Chief Operating Officer
Date:	08/25/2025

Matthew D. Perry

Signature:	/s/ Matthew D. Perry
Name/Title:	Reporting Person
Date:	08/25/2025

FAQ

How many Whitehawk Therapeutics (WHWK) shares do Coastlands reporting persons own?

They report beneficial ownership of 2,819,215 shares, equal to 5.98% of outstanding common stock as of August 4, 2025.

Does the Schedule 13G indicate Coastlands intends to take control of WHWK?

No. The filing certifies the securities are held in the ordinary course of business and not for the purpose of changing or influencing control of the issuer.

Which Coastlands entities are named on the filing for WHWK?

The filing names Coastlands Capital LP, Coastlands Capital Partners LP, Coastlands Capital GP LLC, Coastlands Capital LLC and Matthew D. Perry.

What type of voting and dispositive power is reported for these shares?

Most reporting persons indicate shared voting and shared dispositive power over the 2,819,215 shares; one cover entry lists sole power for the GP entity.

On what share count is the 5.98% ownership percentage based?

The percentage is calculated using 47,128,362 shares of common stock outstanding as of August 4, 2025, per the issuer's referenced filing.