Insiders · Profile

Morrison Briggs

Director at ARVINAS · Director at Syndax Pharmaceuticals. Filing since 9 May 2019. CIK 0001654430

ARVN ARVINAS, INC. Director · 5 trades SNDX Syndax Pharmaceuticals Inc Director · 25 trades

Company

Date

Role

Action

Shares

Amount

Of holding

ARVN ARVINAS, INC.

6 Mar 2026

Director

Bought

20,000

$268.07K

26.3%

ARVN ARVINAS, INC.

22 Sep 2025

Director

Bought

30,000

$227.01K

65.2%

SNDX Syndax Pharmaceuticals Inc

9 Aug 2023

Director

Sold on a plan

52,855

$965.40K

74.8%

SNDX Syndax Pharmaceuticals Inc

10 Jul 2023

Director

Sold on a plan

52,855

$1.08M

74.8%

SNDX Syndax Pharmaceuticals Inc

9 Jun 2023

Director

Sold on a plan

52,855

$1.12M

74.8%

SNDX Syndax Pharmaceuticals Inc

9 May 2023

Director

Sold on a plan

52,855

$1.13M

74.8%

SNDX Syndax Pharmaceuticals Inc

10 Apr 2023

Director

Sold on a plan

52,855

$1.03M

74.8%

SNDX Syndax Pharmaceuticals Inc

13 Mar 2023

President, Head of R&D

Sold, plan not stated

52,854

$1.19M

74.8%

SNDX Syndax Pharmaceuticals Inc

6 Feb 2023

President, Head of R&D

Sold, plan not stated

52,854

$1.42M

74.8%

SNDX Syndax Pharmaceuticals Inc

20 Sep 2022

President, Head of R&D

Sold, plan not stated

59,649

$1.39M

77.0%

SNDX Syndax Pharmaceuticals Inc

19 Sep 2022

President, Head of R&D

Sold, plan not stated

114,339

$2.63M

86.5%

SNDX Syndax Pharmaceuticals Inc

16 Sep 2022

President, Head of R&D

Sold, plan not stated

125,000

$2.90M

87.5%

SNDX Syndax Pharmaceuticals Inc

15 Sep 2022

President, Head of R&D

Sold, plan not stated

66,775

$1.62M

78.9%

SNDX Syndax Pharmaceuticals Inc

14 Sep 2022

President, Head of R&D

Sold, plan not stated

87,645

$2.09M

83.1%

SNDX Syndax Pharmaceuticals Inc

1 Jul 2022

President, Head of R&D

Sold, plan not stated

62,292

$1.18M

77.7%

ARVN ARVINAS, INC.

14 Apr 2022

Director

Sold, plan not stated

20,960

$1.39M

51.2%

SNDX Syndax Pharmaceuticals Inc

4 Apr 2022

President, Head of R&D

Sold, plan not stated

3,128

$57.22K

14.9%

SNDX Syndax Pharmaceuticals Inc

1 Apr 2022

President, Head of R&D

Sold, plan not stated

101,045

$1.76M

85.0%

ARVN ARVINAS, INC.

14 Jan 2022

Director

Sold, plan not stated

20,960

$1.37M

45.9%

SNDX Syndax Pharmaceuticals Inc

17 Dec 2021

Chief Executive Officer

Sold, plan not stated

35,156

$703.12K

42.1%

SNDX Syndax Pharmaceuticals Inc

20 Sep 2021

Chief Executive Officer

Sold, plan not stated

50

$1.00K

0.1%

SNDX Syndax Pharmaceuticals Inc

17 Sep 2021

Chief Executive Officer

Sold, plan not stated

70,262

$1.41M

59.2%

SNDX Syndax Pharmaceuticals Inc

8 Feb 2021

Chief Executive Officer

Sold, plan not stated

35,156

$722.40K

42.1%

SNDX Syndax Pharmaceuticals Inc

10 Nov 2020

Chief Executive Officer

Sold, plan not stated

17,466

$350.31K

27.3%

SNDX Syndax Pharmaceuticals Inc

9 Nov 2020

Chief Executive Officer

Sold, plan not stated

62,938

$1.26M

57.5%

ARVN ARVINAS, INC.

24 Mar 2020

Director

Bought

2,500

$95.45K

9.3%

SNDX Syndax Pharmaceuticals Inc

4 Feb 2020

Chief Executive Officer

Bought

12,500

$100.00K

39.8%

SNDX Syndax Pharmaceuticals Inc

10 Oct 2019

Chief Executive Officer

Bought

11,000

$59.40K

53.9%

SNDX Syndax Pharmaceuticals Inc

13 May 2019

Chief Executive Officer

Bought

7,200

$52.52K

54.5%

SNDX Syndax Pharmaceuticals Inc

9 May 2019

Chief Executive Officer

Bought

13,200

$99.73K

opened

30 decisions on file.