T. Rowe Price holds 9.87M shares of Shattuck Labs (NASDAQ: STTK) amendment

Rhea-AI Filing Summary

Shattuck Labs Inc. ownership filing reports that T. Rowe Price Investment Management, Inc. holds 9,865,558 shares of common stock, representing 13.8% of the class as shown for the period 03/31/2026. The filer states sole voting power for 9,831,415 shares and sole dispositive power for 9,865,558 shares. The filing is an amendment and is signed by a Vice President on 05/15/2026.

Insights

Equity Ownership Analyst

T. Rowe Price reports a sizable 13.8% stake in STTK as of 03/31/2026.

The filing shows 9,865,558 shares beneficially owned with sole voting power on 9,831,415 shares, indicating control over voting for most of the position. This is a passive ownership disclosure typical for large institutional holders.

Cash‑flow treatment or planned transactions are not disclosed here; subsequent amendments or Schedule 13D would show active changes if they occur.

Regulatory Filings Specialist

The Schedule 13G/A is an amendment confirming reported beneficial ownership and voting/dispositive details.

The form lists the issuer CUSIP 82024L103 and identifies the filer as a Maryland entity. It includes explicit counts for voting and dispositive power, which matter for regulatory thresholds and reporting obligations.

Any change above reporting thresholds would require further amendment; monitor future filings for shifts in percent ownership or change in voting status.

Key Figures

Beneficial ownership: 9,865,558 shares Percent of class: 13.8% Sole voting power: 9,831,415 shares +4 more

7 metrics

Beneficial ownership 9,865,558 shares Amount beneficially owned as reported

Percent of class 13.8% Percent of class as reported for <date>03/31/2026</date>

Sole voting power 9,831,415 shares Sole power to vote or to direct the vote

Sole dispositive power 9,865,558 shares Sole power to dispose or direct disposition

CUSIP 82024L103 Issuer identifier for common stock

Reporting period 03/31/2026 Period shown near top of filing

Signature date 05/15/2026 Date the amendment was signed

Key Terms

Schedule 13G/A, Beneficial ownership, Sole dispositive power, CUSIP

4 terms

Schedule 13G/A regulatory

"Amendment No. 1 ) SHATTUCK LABS INC COMMON STOCK"

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

Beneficial ownership regulatory

"Item 4. | Ownership (a) | Amount beneficially owned: 9865558"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

Sole dispositive power regulatory

"(iii) Sole power to dispose or to direct the disposition of: 9865558"

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.

CUSIP technical

"COMMON STOCK 82024L103 03/31/2026"

A CUSIP is a nine-character alphanumeric code that uniquely identifies a U.S. or Canadian financial security—such as a stock, bond, or fund share—like a Social Security number for an investment. It matters to investors because brokers, exchanges and record-keepers use the CUSIP to match trades, track ownership, settle transactions and pull accurate records, reducing errors and ensuring money and securities go to the right place.

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

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Accepted by SEC EDGAR 05/15/2026 - 10:06 AM Learn about SEC filing dates

FAQ

What stake does T. Rowe Price hold in SHATTUCK LABS (STTK)?

T. Rowe Price reports beneficial ownership of 9,865,558 shares (13.8%) as of 03/31/2026. The filing shows sole dispositive power over 9,865,558 shares and sole voting power over 9,831,415 shares, per the amendment signed 05/15/2026.

Does the filing show voting power for the T. Rowe Price position in STTK?

Yes. The filer reports sole voting power on 9,831,415 shares and shared voting power of 0. These counts are disclosed in the amendment and correspond to the 03/31/2026 reporting period.

Is this Schedule 13G/A a signal of active control or passive ownership?

This Schedule 13G/A format typically indicates institutional/passive ownership rather than an acquisition for control. The filing lists voting and dispositive counts without describing plans to change control or sell, consistent with passive reporting practice.

What identifiers and dates appear on the T. Rowe Price amendment for STTK?

The filing lists CUSIP 82024L103, a reporting period of 03/31/2026, and a signature date of 05/15/2026. It is labeled as an amendment (Schedule 13G/A) for common stock.

Who signed the Schedule 13G/A on behalf of T. Rowe Price?

The amendment is signed by Ellen York, Vice President, with the signature date shown as 05/15/2026. The filing includes a statement disclaiming beneficial ownership by the investment manager.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

SHATTUCK LABS INC

(Name of Issuer)

COMMON STOCK

(Title of Class of Securities)

82024L103

(CUSIP Number)

03/31/2026

(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): 82024L103

1

Names of Reporting Persons

T. Rowe Price Investment Management, Inc.

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

MARYLAND

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 9,831,415.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 9,865,558.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

9,865,558.00

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)

13.8 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: SHATTUCK LABS INC
(b)	Address of issuer's principal executive offices: 500 W. 5TH STREET, AUSTIN, TX, 78701
Item 2.
(a)	Name of person filing: T. Rowe Price Investment Management, Inc.
(b)	Address or principal business office or, if none, residence: 1307 Point Street, Baltimore, MD 21231
(c)	Citizenship: Maryland
(d)	Title of class of securities: COMMON STOCK
(e)	CUSIP No.: 82024L103
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: 9865558
(b)	Percent of class: 13.8 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 9831415
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 9865558
	(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:

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. T. Rowe Price Investment Management, Inc. hereby declares and affirms that the filing of Schedule 13G shall not be construed as an admission that Price Investment Management is the beneficial owner of the securities referred to, which beneficial ownership is expressly denied.

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.

T. Rowe Price Investment Management, Inc.

Signature:	Ellen York
Name/Title:	Vice President
Date:	05/15/2026