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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.

Insider
Date
Role
Action
Shares
Price
Amount
Shukla Abhinav A.
6 Jul 2026
Chief Technical Officer
Exercised, kept
12,153
$3.57
$43.39K
Shukla Abhinav A.
2 Jul 2026
Chief Technical Officer
Sold after exercise
410
$7.01
$2.87K
Shukla Abhinav A.
1 Jul 2026
Chief Technical Officer
Sold after exercise
100
$7.07
$707.00
Pandite Arundathy N.
30 Jun 2026
Chief Medical Officer
Sold on a plan
30,000
$7.01
$210.30K
Shukla Abhinav A.
30 Jun 2026
Chief Technical Officer
Sold after exercise
23,365
$7.08
$165.42K
SIEGALL CLAY B
9 Jun 2026
Director
Buy
62,500
$4.00
$250.00K
Pandite Arundathy N.
12 May 2026
Chief Medical Officer
Sold on a plan
30,000
$6.61
$198.30K
Shukla Abhinav A.
12 May 2026
Chief Technical Officer
Sold after exercise
2,032
$7.01
$14.24K
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
Redmile Group, LLC
4 Dec 2024
Director
Sell 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
Schreiber Taylor
4 Jun 2024
Chief Executive Officer
Exercised, kept
3,050
$3.57
$10.89K
Stout Stephen
6 Mar 2024
See Remarks
Sold after exercise
4,895
$10.53
$51.54K
Stout Stephen
6 Mar 2024
See Remarks
Sold after exercise
6,459
$10.53
$68.01K
Stout Stephen
6 Mar 2024
See Remarks
Sold after exercise
4,650
$10.53
$48.96K
Neill Andrew R
10 Jan 2024
Chief Financial Officer
Sold on a plan
25,000
$10.00
$250.00K
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
Schreiber Taylor
28 Jan 2022
Chief Executive Officer
Exercised, kept
3,926
$4.67
$18.33K
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
Thomson Erin Ator
12 Jan 2022
General Counsel
Exercised, kept
10,000
$2.95
$29.50K
Neill Andrew R
11 Nov 2021
Chief Financial Officer
Exercised, kept
20,000
$2.95
$59.00K
Schreiber Taylor
10 Nov 2021
Chief Executive Officer
Exercised, kept
3,926
$4.67
$18.33K
Thomson Erin Ator
19 Oct 2021
General Counsel
Sell
33,000
$19.50
$643.50K
Schreiber Taylor
10 Aug 2021
Chief Executive Officer
Exercised, kept
3,926
$4.67
$18.33K
Pandite Arundathy N.
10 Aug 2021
Chief Medical Officer
Exercised, kept
4,259
$0.01
$42.59
Neill Andrew R
10 Aug 2021
Chief Financial Officer
Exercised, kept
2,203
$0.01
$22.03
Hornblower Josiah
15 Jul 2021
Director
Sell indirect
34
$22.74
$773.16
Thomson Erin Ator
15 Jul 2021
General Counsel
Sell
2,000
$22.18
$44.37K
Neill Andrew R
15 Jul 2021
Chief Financial Officer
Sell
2,000
$22.13
$44.26K
Hornblower Josiah
14 Jul 2021
Director
Sell indirect
12,049
$23.14
$278.78K
Hornblower Josiah
13 Jul 2021
Director
Sell indirect
4,356
$25.12
$109.43K
Hornblower Josiah
12 Jul 2021
Director
Sell indirect
2,829
$26.15
$73.98K
Hornblower Josiah
9 Jul 2021
Director
Sell indirect
3,276
$26.54
$86.93K
Hornblower Josiah
8 Jul 2021
Director
Sell indirect
3,586
$26.24
$94.10K
Hornblower Josiah
7 Jul 2021
Director
Sell indirect
4,271
$26.17
$111.78K
Hornblower Josiah
6 Jul 2021
Director
Sell indirect
2,621
$27.32
$71.60K
Hornblower Josiah
2 Jul 2021
Director
Sell indirect
2,514
$28.53
$71.73K
Hornblower Josiah
1 Jul 2021
Director
Sell indirect
7,669
$28.81
$220.97K
Hornblower Josiah
30 Jun 2021
Director
Sell indirect
17,891
$28.65
$512.56K
Hornblower Josiah
29 Jun 2021
Director
Sell indirect
6,921
$26.89
$186.11K
Hornblower Josiah
28 Jun 2021
Director
Sell indirect
8,091
$28.00
$226.56K
Hornblower Josiah
25 Jun 2021
Director
Sell indirect
16,210
$28.20
$457.09K
Hornblower Josiah
24 Jun 2021
Director
Sold after exercise indirect
7,616
$28.18
$214.63K
Hornblower Josiah
23 Jun 2021
Director
Sell indirect
5,832
$28.29
$164.97K
Hornblower Josiah
21 Jun 2021
Director
Sell indirect
9,245
$29.82
$275.70K
Hornblower Josiah
20 Jun 2021
Director
Sell indirect
7,382
$29.96
$221.18K
Hornblower Josiah
18 Jun 2021
Director
Sell indirect
9,840
$29.00
$285.33K
Thomson Erin Ator
18 Jun 2021
General Counsel
Sell
3,000
$30.00
$90.00K
Hornblower Josiah
17 Jun 2021
Director
Sell indirect
8,469
$28.76
$243.60K
Hornblower Josiah
16 Jun 2021
Director
Sell indirect
8,691
$27.80
$241.59K
Thomson Erin Ator
15 Jun 2021
General Counsel
Sell
4,000
$27.55
$110.22K
Neill Andrew R
15 Jun 2021
Chief Financial Officer
Sell
2,000
$27.53
$55.05K
Hornblower Josiah
15 Jun 2021
Director
Sell indirect
7,293
$27.47
$200.34K
Hornblower Josiah
14 Jun 2021
Director
Sell indirect
5,356
$29.05
$155.61K
Hornblower Josiah
11 Jun 2021
Director
Sell indirect
4,392
$29.41
$129.17K
Hornblower Josiah
10 Jun 2021
Director
Sell indirect
5,316
$28.67
$152.39K
Hornblower Josiah
9 Jun 2021
Director
Sell indirect
7,601
$29.21
$222.02K
Thomson Erin Ator
8 Jun 2021
General Counsel
Sell
3,000
$30.00
$90.00K
Hornblower Josiah
8 Jun 2021
Director
Sell indirect
9,229
$29.72
$274.32K
Hornblower Josiah
7 Jun 2021
Director
Sell indirect
10,736
$29.45
$316.18K
Hornblower Josiah
4 Jun 2021
Director
Sell indirect
7,047
$28.57
$201.36K
Hornblower Josiah
3 Jun 2021
Director
Sell indirect
5,494
$27.30
$150.01K
Hornblower Josiah
2 Jun 2021
Director
Sell indirect
6,399
$27.64
$176.89K
Hornblower Josiah
1 Jun 2021
Director
Sell indirect
5,931
$27.41
$162.55K
Hornblower Josiah
28 May 2021
Director
Sell indirect
8,747
$27.18
$237.71K
Hornblower Josiah
27 May 2021
Director
Sell indirect
4,923
$26.37
$129.83K
Hornblower Josiah
26 May 2021
Director
Sell indirect
5,320
$24.74
$131.64K
Hornblower Josiah
25 May 2021
Director
Sell indirect
5,159
$24.87
$128.30K
Hornblower Josiah
24 May 2021
Director
Sell indirect
5,456
$25.23
$137.65K
Hornblower Josiah
21 May 2021
Director
Sell indirect
5,977
$25.58
$152.87K
Schreiber Taylor
21 May 2021
Chief Executive Officer
Sell indirect
4,330
$25.07
$108.55K
Schreiber Taylor
21 May 2021
Chief Executive Officer
Sell indirect
6,215
$25.56
$158.84K
Hornblower Josiah
20 May 2021
Director
Sell indirect
7,532
$26.20
$197.31K
Schreiber Taylor
20 May 2021
Chief Executive Officer
Sell indirect
7,378
$26.19
$193.20K
Hornblower Josiah
19 May 2021
Director
Sell indirect
7,747
$24.65
$191.00K
Schreiber Taylor
19 May 2021
Chief Executive Officer
Sell indirect
7,794
$24.63
$191.96K
Hornblower Josiah
18 May 2021
Director
Sell indirect
5,107
$26.03
$132.93K
Schreiber Taylor
18 May 2021
Chief Executive Officer
Sell indirect
4,998
$26.05
$130.19K
Hornblower Josiah
17 May 2021
Director
Sell indirect
6,336
$26.30
$166.66K
Schreiber Taylor
17 May 2021
Chief Executive Officer
Sell indirect
6,139
$26.28
$161.34K
Neill Andrew R
17 May 2021
Chief Financial Officer
Sell
2,000
$26.27
$52.54K
Thomson Erin Ator
17 May 2021
General Counsel
Sell
4,000
$26.25
$104.98K
Hornblower Josiah
14 May 2021
Director
Sell indirect
11,095
$26.24
$291.09K
Schreiber Taylor
14 May 2021
Chief Executive Officer
Sell indirect
11,077
$26.25
$290.76K
Hornblower Josiah
13 May 2021
Director
Sell indirect
10,090
$25.88
$261.10K
Schreiber Taylor
13 May 2021
Chief Executive Officer
Sell indirect
9,856
$25.91
$255.40K
Hornblower Josiah
12 May 2021
Director
Sell indirect
14,057
$27.27
$383.35K
Schreiber Taylor
12 May 2021
Chief Executive Officer
Sell indirect
14,242
$27.29
$388.64K
Neill Andrew R
12 May 2021
Chief Financial Officer
Exercised, kept
8,860
$0.01
$88.60
Hornblower Josiah
11 May 2021
Director
Sell indirect
15,040
$28.04
$421.67K
Schreiber Taylor
11 May 2021
Chief Executive Officer
Sell indirect
14,783
$28.03
$414.34K
Hornblower Josiah
10 May 2021
Director
Sell indirect
8,227
$26.94
$221.62K
Schreiber Taylor
10 May 2021
Chief Executive Officer
Sell indirect
8,188
$26.98
$220.95K
Thomson Erin Ator
28 Apr 2021
General Counsel
Sell
5,000
$35.00
$175.00K
Neill Andrew R
28 Apr 2021
Chief Financial Officer
Sell
20,000
$35.00
$700.00K
Thomson Erin Ator
15 Apr 2021
General Counsel
Sell
7,000
$30.77
$215.39K
Neill Andrew R
15 Apr 2021
Chief Financial Officer
Sell
24,000
$30.74
$737.76K
Pandite Arundathy N.
5 Jan 2021
Chief Medical Officer
Exercised, kept
1,604
$0.01
$16.04
Neill Andrew R
22 Dec 2020
See Remarks
Exercised, kept
4,426
$0.01
$44.26
Neill Andrew R
5 Nov 2020
See Remarks
Exercised, kept
2,211
$0.01
$22.11
Thomson Erin Ator
5 Nov 2020
General Counsel
Exercised, kept
2,952
$0.01
$29.52
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

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