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Shattuck Labs, Inc.

STTK
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0001680367

No open-market purchases or sales by Shattuck Labs, Inc. insiders were filed in the last 90 days; 100 institutions reported holding it in 13F filings for Q2 2026, worth $581.3M in total; no superinvestor holds it.

Holders of 5% or more of STTK

Holders whose latest Schedule 13D or 13G filing reports 5% or more of Shattuck Labs, Inc., largest stake first. The change is against the holder's previous filing.

Holders of 5% or more of STTK
HolderLatest formStakeChangeFirst filedLatest filingFiling
T. Rowe Price Investment Management, Inc.13G/A15.30%13.4M shares+1.50 ppfrom 13.80%Feb 6, 20263 filingsAug 14, 2026SEC
OrbiMed Advisors LLC13D/A9.99%9.02M shares0.00 ppfrom 9.99%Sep 2, 20252 filingsJun 15, 2026SEC
Redmile Group, LLC13D/A9.90%10.0M shares0.00 ppfrom 9.90%Dec 26, 20236 filingsJul 17, 2026SEC
Prosight Management, LP13G/A9.90%6.54M shares–Jan 2, 20244 filingsNov 13, 2025SEC
Adage Capital Partners GP, L.L.C.13G/A9.79%4.67M shares–Jan 29, 20242 filingsFeb 12, 2025SEC
BlackRock, Inc.13G5.30%5.34M shares+3.50 ppfrom 1.80%Oct 24, 20244 filingsOct 27, 2026SEC
Deep Track Capital, LP13G5.17%5.00M sharesNewJun 17, 20261 filingJun 17, 2026SEC

Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.

13D and 13G filings

37 Schedule 13D and 13G filings on Shattuck Labs, Inc., newest first, including old-format filings without a stake.

Schedule 13D and 13G filings on STTK
Filed (ET)FilerFormStakeChangeEvent dateFiling
Oct 27, 20265:25 PM ETBlackRock, Inc.13G5.30%5.34M shares+3.50 ppfrom 1.80%Sep 30, 2026SEC
Aug 14, 202610:39 AM ETT. Rowe Price Investment Management, Inc.13G/A15.30%13.4M shares+1.50 ppfrom 13.80%Jun 30, 2026SEC
Jul 17, 20269:30 PM ETRedmile Group, LLCand 2 others13D/A9.90%10.0M shares0.00 ppfrom 9.90%Jul 15, 2026SEC
Jun 17, 20264:00 PM ETDeep Track Capital, LPand 2 others13G5.17%5.00M sharesNewJun 10, 2026SEC
Jun 15, 20266:10 PM ETOrbiMed Advisors LLCand 2 others13D/A9.99%9.02M shares0.00 ppfrom 9.99%Jun 11, 2026SEC
Jun 11, 20269:00 PM ETRedmile Group, LLCand 2 others13D/A9.90%9.82M shares0.00 ppfrom 9.90%Jun 9, 2026SEC
May 15, 202610:06 AM ETT. Rowe Price Investment Management, Inc.13G/A13.80%9.87M shares+2.10 ppfrom 11.70%Mar 31, 2026SEC
Feb 6, 202610:08 AM ETT. Rowe Price Investment Management, Inc.13G11.70%7.37M sharesNewJan 31, 2026SEC
Nov 13, 20257:38 PM ETProsight Management, LPand 4 others13G/A9.90%6.54M shares–Sep 30, 2025SEC
Sep 2, 20259:53 PM ETOrbiMed Advisors LLCand 2 others13D9.99%6.31M sharesNewAug 25, 2025SEC
Aug 26, 20255:01 PM ETRedmile Group, LLCand 2 others13D/A9.90%6.38M shares−1.90 ppfrom 11.80%Aug 25, 2025SEC
Aug 6, 20259:00 PM ETRedmile Group, LLCand 2 others13D/A11.80%5.65M shares–Aug 4, 2025SEC
Jul 29, 20252:32 PM ETVanguard Group Inc13G/A4.48%2.15M shares–Below 5%Jun 30, 2025SEC
Jul 16, 20257:02 PM ETBlackRock, Inc.13G/A1.80%878.8K shares–Below 5%Jun 30, 2025SEC
Feb 12, 20259:33 AM ETAdage Capital Partners GP, L.L.C.and 3 others13G/A9.79%4.67M shares–Dec 31, 2024SEC
Dec 6, 2024Redmile Group, LLC13D/AOld format–––SEC
Nov 13, 2024Prosight Management, LP13G/AOld format–––SEC
Nov 12, 2024Vanguard Group Inc13G/AOld format–––SEC
Nov 8, 2024BlackRock, Inc.13GOld format–––SEC
Nov 7, 2024FMR LLC13G/AOld format–––SEC
Nov 4, 2024Vanguard Group Inc13G/AOld format–––SEC
Oct 24, 2024BlackRock, Inc.13GOld format–New–SEC
Aug 16, 2024Prosight Management, LP13G/AOld format–––SEC
Feb 9, 2024FMR LLC13G/AOld format–––SEC
Jan 29, 2024Adage Capital Partners GP, L.L.C.13GOld format–New–SEC
Jan 2, 2024Prosight Management, LP13GOld format–New–SEC
Dec 26, 2023Redmile Group, LLC13D/AOld format–––SEC
Feb 9, 2023FMR LLC13G/AOld format–––SEC
Dec 9, 2022Hornblower Josiah13D/AOld format–––SEC
Jun 9, 20223:20 PM ETBlackRock Inc.13GOld format–––SEC
Feb 14, 2022EcoR1 Capital, LLC13G/AOld format–––SEC
Feb 9, 2022FMR LLC13G/AOld format–––SEC
Feb 4, 20224:12 PM ETBlackRock Inc.13GOld format–New–SEC
Jan 14, 2022Takeda Pharmaceutical Co Ltd13G/AOld format–––SEC
May 17, 2021EcoR1 Capital, LLC13GOld format–New–SEC
Feb 8, 2021FMR LLC13G/AOld format–––SEC
Jan 29, 2021Takeda Pharmaceutical Co Ltd13G/AOld format–––SEC

Form 144: proposed insider sales

8 notices from officers, directors and other affiliates planning to sell Shattuck Labs, Inc. shares, newest first.

Form 144 notices for STTK
Filed (ET)SellerShares to sellMarket valuePlanned saleBrokerFiling
Jul 2, 20264:24 PM ETShukla Abhinav A.Officer410$2.87KJul 2, 202610b5-1Fidelity Brokerage Services LLCSEC
Jul 1, 20264:19 PM ETShukla Abhinav A.Officer100$707Jul 1, 202610b5-1Fidelity Brokerage Services LLCSEC
Jun 30, 20264:10 PM ETShukla Abhinav A.Officer23.4K$165.5KJun 30, 202610b5-1Fidelity Brokerage Services LLCSEC
May 12, 20264:33 PM ETArunthathy PanditeOfficer60.0K$421.2KMay 12, 202610b5-1Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
May 12, 20264:17 PM ETShukla Abhinav A.Officer2.03K$14.2KMay 12, 202610b5-1Fidelity Brokerage Services LLCSEC
Dec 4, 20249:00 PM ETRedmile Group, LLCDirector, 10% Stockholder133.4K$150.7KDec 4, 2024Jefferies LLCSEC
Mar 6, 20244:42 PM ETStephen Charles StoutOfficer16.0K$168.5KMar 6, 202410b5-1Morgan Stanley Smith Barney LLC Executive Financial ServicesSEC
Jan 10, 20244:05 PM ETNeill Andrew ROfficer25.0K$250.0KJan 10, 202410b5-1UBS Financial Services, Inc.SEC