Shattuck Labs, Inc. (STTK) Insider Trading
Over the last 3 months, STTK insiders made 1 open-market buy and 2 sales, a net purchase of $37K (SEC Form 4). Over the last 6 months, 53 institutions increased and 24 reduced their position (13F).
Insider Activity
Sentiment
54/100
Buys (3m)
1
Sells (3m)
2
Net (3m)
$37.5K
Insiders buyingFirst buy in 3 quarters
Insider trades by month Buys Sells
Jul
Oct
Dec
Sep
May
Jun
Context3-month price -23.5%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Jun 11, 2026 | SIEGALL CLAY Bdirector | Buy | 62,500 | $4.00 |
| Jun 2, 2026 | SIEGALL CLAY Bdirector | Grant | 81,000 | $5.95 |
| Jun 2, 2026 | Boudreau Helen Mdirector | Grant | 81,000 | $5.95 |
| Jun 2, 2026 | Ashiya Monadirector | Grant | 81,000 | $5.95 |
| Jun 2, 2026 | Baker Daniel G.director | Grant | 81,000 | $5.95 |
| Jun 2, 2026 | Golumbeski Georgedirector | Grant | 81,000 | $5.95 |
| Jun 2, 2026 | Gibson Neil Wdirector | Grant | 81,000 | $5.95 |
| May 27, 2026 | SIEGALL CLAY Bdirector | Option | 128,054 | $1.08 |
| May 27, 2026 | SIEGALL CLAY Bdirector | Grant | 128,054 | $1.08 |
| May 21, 2026 | Shukla Abhinav A.officer: Chief Technical Officer | Grant | 5,122 | $1.08 |
| May 21, 2026 | Shukla Abhinav A.officer: Chief Technical Officer | Option | 5,122 | $1.08 |
| May 18, 2026 | Stout Stephenofficer: See Remarks | Grant | 12,805 | $1.08 |
| May 18, 2026 | Stout Stephenofficer: See Remarks | Option | 12,805 | $1.08 |
| May 14, 2026 | Shukla Abhinav A.officer: Chief Technical Officer | Sell | 2,032 | $7.01 |
| May 14, 2026 | Neill Andrew Rofficer: Chief Financial Officer | Option | 64,027 | $1.08 |
| May 14, 2026 | Neill Andrew Rofficer: Chief Financial Officer | Grant | 64,027 | $1.08 |
| May 14, 2026 | Pandite Arundathy N.officer: Chief Medical Officer | Sell | 30,000 | $6.61 |
| May 14, 2026 | Shukla Abhinav A.officer: Chief Technical Officer | Option | 2,032 | $3.57 |
| May 13, 2026 | Schreiber Taylordirector, officer: Chief Executive Officer | Option | 25,610 | $1.08 |
| May 13, 2026 | Schreiber Taylordirector, officer: Chief Executive Officer | Grant | 25,610 | $1.08 |
| May 12, 2026 | Stout Stephenofficer: See Remarks | Tax | 968 | $6.85 |
| Jan 27, 2026 | Neill Andrew Rofficer: Chief Financial Officer | Tax | 2,589 | $4.15 |
| Jan 27, 2026 | DeYoung Casiofficer: Chief Business Officer | Tax | 2,286 | $4.15 |
| Jan 27, 2026 | Stout Stephenofficer: See Remarks | Tax | 593 | $4.15 |
| Jan 27, 2026 | Pandite Arundathy N.officer: Chief Medical Officer | Tax | 3,195 | $4.15 |
| Jan 13, 2026 | DeYoung Casiofficer: Chief Business Officer | Tax | 5,699 | $4.75 |
| Jan 13, 2026 | Stout Stephenofficer: See Remarks | Tax | 4,153 | $4.75 |
| Jan 13, 2026 | Stout Stephenofficer: See Remarks | Grant | 351,400 | $4.75 |
| Jan 13, 2026 | Pandite Arundathy N.officer: Chief Medical Officer | Tax | 6,851 | $4.75 |
| Jan 13, 2026 | Neill Andrew Rofficer: Chief Financial Officer | Grant | 549,800 | $4.75 |
Source: STTK SEC Form 4 filings, latest Jun 11, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their STTK positions over the last 6 months (SEC Form 13F).
Increased
53
New positions
41
Reduced
24
Sold out
9
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| T. ROWE PRICE INVESTMENT MANAGEMENT, INC. | Increased | 9.9M | May 15, 2026 |
| ORBIMED ADVISORS LLC | Unchanged | 6.3M | Feb 17, 2026 |
| ORBIMED ADVISORS LLC | Unchanged | 6.3M | May 15, 2026 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | Unchanged | 6.3M | Feb 17, 2026 |
| REDMILE GROUP, LLC | Unchanged | 5.5M | May 15, 2026 |
| REDMILE GROUP, LLC | Unchanged | 5.5M | Feb 17, 2026 |
| PROSIGHT MANAGEMENT, LP | Increased | 5.0M | May 15, 2026 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | Reduced | 4.6M | May 15, 2026 |
| NEXTBio Capital Management LP | New Position | 3.1M | Feb 13, 2026 |
| NEXTBio Capital Management LP | Unchanged | 3.1M | May 14, 2026 |
| PROSIGHT MANAGEMENT, LP | Reduced | 2.4M | Feb 13, 2026 |
| VANGUARD GROUP INC | Increased | 2.4M | Jan 29, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 2.3M | May 15, 2026 |
| PRICE T ROWE ASSOCIATES INC /MD/ | New Position | 1.9M | Feb 17, 2026 |
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | 1.8M | May 15, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.