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Shattuck Labs, Inc.

STTK Net buying
CIK 0001680367 #2799 in the set updated 18 Sep 2026
Bought (120 mo)
$71.41M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$16.23M
$658.60K on a plan · $566.41K straight out of an exercise
Sold at will
$15.00M
71 of 82 sales
Net
+$55.18M
+$56.41M against sales at will

By person

14 insiders · 118 transactions
Insider
Role
Bought
Sold
Net
Holding
Worth
Change
Redmile Group, LLC entity
Director
$59.84M (7)
$166.71K (1)
+$59.67M
11,159,638
$78.23M
+101.3%
Hornblower Josiah
Director
—
$9.47M (47)
−$9.47M
3,313,796
$23.23M
−0.6%
Ashiya Mona
Director
$5.47M (2)
—
+$5.47M
1,051,021
$7.37M
—
ORBIMED ADVISORS LLC entity
Director
$5.47M (2)
—
+$5.47M
1,051,021
$7.37M
—
Schreiber Taylor
Chief Executive Officer
$94.23K (2)
$2.51M (11)
−$2.42M
2,732,972
$19.16M
+1.0%
Neill Andrew R
Chief Financial Officer
—
$1.84M (6)
−$1.84M
292,251
$2.05M
+230.4%
Thomson Erin Ator
General Counsel
—
$1.47M (8)
−$1.47M
103,209
$723.50K
0.0%
Pandite Arundathy N.
Chief Medical Officer
—
$408.60K (2) scheduled
−$408.60K
136,219
$954.90K
+35.8%
SIEGALL CLAY B
Director
$250.00K (1)
—
+$250.00K
318,608
$2.23M
—
Golumbeski George
Director
$199.82K (3)
—
+$199.82K
54,613
$382.84K
—
Shukla Abhinav A.
Chief Technical Officer
—
$183.25K (4) scheduled
−$183.25K
98,533
$690.72K
+252.8%
Stout Stephen
See Remarks
—
$168.52K (3) scheduled
−$168.52K
93,366
$654.50K
+523.5%
Brous Tyler
Director
$88.80K (5)
—
+$88.80K
238,088
$1.67M
+184.9%
DeYoung Casi
Chief Business Officer
—
—
—
73,480
$515.09K
—

No percentages here. This company's share count has moved by a factor of 2.1 over the window, from 47,739,708 to 100,363,253 shares. A split, a merger or a large issue changes what the company is, and a holding measured at one point in that run is not a fraction of it at another.

Individual transactions

22
Insider
Date
Role
Action
Shares
Price
Amount
SIEGALL CLAY B
9 Jun 2026
Director
Buy
62,500
$4.00
$250.00K
Ashiya Mona
25 Aug 2025
Director
Buy indirect
1,051,021
$0.87
$911.97K
Ashiya Mona
25 Aug 2025
Director
Buy indirect
5,255,106
$0.87
$4.56M
ORBIMED ADVISORS LLC
25 Aug 2025
Director
Buy indirect
1,051,021
$0.87
$911.97K
ORBIMED ADVISORS LLC
25 Aug 2025
Director
Buy indirect
5,255,106
$0.87
$4.56M
Redmile Group, LLC
4 Dec 2024
Director
Buy indirect
133,371
$1.25
$166.71K
Schreiber Taylor
7 Oct 2024
Chief Executive Officer
Buy
36,500
$1.21
$44.22K
Brous Tyler
28 Jun 2024
Director
Buy
3,000
$3.90
$11.70K
Brous Tyler
27 Jun 2024
Director
Buy
5,416
$3.89
$21.07K
Schreiber Taylor
26 Jun 2024
Chief Executive Officer
Buy
14,400
$3.47
$50.01K
Golumbeski George
26 Apr 2022
Director
Buy
28,330
$3.63
$102.84K
Golumbeski George
22 Apr 2022
Director
Buy
234
$3.67
$858.78
Golumbeski George
21 Apr 2022
Director
Buy
26,049
$3.69
$96.12K
Brous Tyler
19 Jan 2022
Director
Buy
3,000
$6.87
$20.61K
Brous Tyler
18 Jan 2022
Director
Buy
2,500
$7.01
$17.53K
Brous Tyler
14 Jan 2022
Director
Buy
2,500
$7.16
$17.90K
Redmile Group, LLC
14 Oct 2020
Director
Buy indirect
50,000
$22.10
$1.11M
Redmile Group, LLC
14 Oct 2020
Director
Buy indirect
31,695
$21.09
$668.31K
Redmile Group, LLC
14 Oct 2020
Director
Buy indirect
65,047
$20.00
$1.30M
Redmile Group, LLC
14 Oct 2020
Director
Buy indirect
195,158
$19.20
$3.75M
Redmile Group, LLC
14 Oct 2020
Director
Buy indirect
158,100
$18.01
$2.85M
Redmile Group, LLC
14 Oct 2020
Director
Buy indirect
2,941,176
$17.00
$50.00M
Show all 118 transactions →

What was left out

Form 4 filings counted 190
Amendments (4/A) skipped 0
Filings about a different issuer 0
Unreadable filings 0
Joint filings 14
Sales on a Rule 10b5-1 plan 3
Sales straight out of an exercise 8
Sales at will 71
Transactions with no price 0
Shares from compensation/vesting 7,555,268
Sales filed before the plan box existed 70
History held since 15 Oct 2020