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ASSEMBLY BIOSCIENCES, INC.

ASMB Net buying
CIK 0001426800 #2862 in the set updated 19 Sep 2026
Bought (120 mo)
$21.67M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$2.82M
$0.00 on a plan · $1.26M straight out of an exercise
Sold at will
$1.56M
63 of 74 sales
Net
+$18.85M
+$20.11M against sales at will

By person

19 insiders · 91 transactions
4.0×

Jason A. Okazaki holds only 4.0 times base salary in stock. $2.60M of shares against $647.50K in salary for 2025.

Salary from the company's own proxy. The shares are what Jason A. Okazaki last reported holding, valued at $23.25, the price Common Stock was last bought or sold at on the open market here, on 17 Jun 2026.

Insider
Role
Bought
Sold
Net
Holding
Worth
Change
GILEAD SCIENCES, INC. entity
10% owner
$20.10M (3)
+$20.10M
4,977,089
$115.72M
+356.8%
Schornstein Alexander
10% owner
$1.42M (10)
+$1.42M
728,113
$16.93M
Colonno Richard James
EVP & CSO, Virology Ops
$944.10K (2) scheduled
−$944.10K
137,009
$3.19M
+8,621%
Lopatin Uri A
Chief Medical Officer
$622.99K (2)
−$622.99K
632,361
$14.70M
+0.9%
RINGO WILLIAM R
Director
$510.39K (11) scheduled
−$510.39K
17,465
$406.06K
−14.7%
McHutchison John G
Director
$439.00K (10)
−$439.00K
18,347
$426.57K
Okazaki Jason A
CEO and President
$101.15K (14)
−$101.15K
111,916
$2.60M
Small Derek A
Director
$99.55K (2)
+$99.55K
828,791
$19.27M
+30.2%
Papkoff Jacqueline Sybil
SVP-CSO Microbiome
$56.48K (3)
−$56.48K
37,364
$868.71K
Delaney William E IV
Chief Scientific Officer
$52.38K (8)
−$52.38K
45,642
$1.06M
Houghton Michael
Director
$50.00K (1)
+$50.00K
3,202
$74.45K
White Nicole S
Chief Manufacturing Officer
$44.27K (11)
−$44.27K
37,477
$871.34K
Stamm Luisa M
Chief Medical Officer
$24.65K (2)
−$24.65K
40,315
$937.32K
Bjorkquist Jeanette M
PFO and PAO
$14.87K (9)
−$14.87K
14,560
$338.52K
Samar Michael P.
Chief Financial Officer
$9.43K (2)
−$9.43K
77,228
$1.80M
+84.6%
COOPER GRAHAM K
See Remarks
117,500
$2.73M
Russo Thomas Joseph
CFO
54,633
$1.27M
Gaggar Anuj
Chief Medical Officer
28,000
$651.00K
Rollins Thomas E
Chief Development Officer
3,750
$87.19K

No percentages here. This company's share count has moved by a factor of 3.2 over the window, from 6,356,286 to 20,360,596 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
Bjorkquist Jeanette M
17 Jun 2026
PFO and PAO
Sell
29
$23.25
$674.25
White Nicole S
30 Mar 2026
Chief Manufacturing Officer
Sell
9
$27.49
$247.41
White Nicole S
30 Mar 2026
Chief Manufacturing Officer
Sell
188
$26.65
$5.01K
Bjorkquist Jeanette M
30 Mar 2026
PFO and PAO
Sell
16
$27.49
$439.84
Bjorkquist Jeanette M
30 Mar 2026
PFO and PAO
Sell
312
$26.65
$8.31K
White Nicole S
31 Mar 2025
Chief Manufacturing Officer
Sell
197
$9.85
$1.94K
Okazaki Jason A
31 Mar 2025
CEO and President
Sell
355
$9.85
$3.50K
Bjorkquist Jeanette M
31 Mar 2025
Principal Accounting Officer
Sell
180
$9.85
$1.77K
McHutchison John G
31 Mar 2025
Director
Sell
757
$9.85
$7.46K
White Nicole S
18 Nov 2024
Chief Manufacturing Officer
Sell
40
$16.29
$651.60
Okazaki Jason A
3 Oct 2024
CEO and President
Sell
197
$14.81
$2.92K
White Nicole S
3 Oct 2024
Chief Manufacturing Officer
Sell
157
$14.81
$2.33K
Okazaki Jason A
2 Aug 2024
CEO and President
Sell
981
$14.23
$13.96K
White Nicole S
2 Aug 2024
Chief Manufacturing Officer
Sell
785
$14.23
$11.17K
Okazaki Jason A
23 May 2024
CEO and President
Sell
549
$14.93
$8.20K
White Nicole S
23 May 2024
Chief Manufacturing Officer
Sell
172
$14.93
$2.57K
McHutchison John G
23 May 2024
Director
Sell
2,117
$14.93
$31.61K
Bjorkquist Jeanette M
23 May 2024
Principal Accounting Officer
Sell
24
$14.93
$358.41
Okazaki Jason A
30 Apr 2024
CEO and President
Sell
1,569
$12.71
$19.94K
White Nicole S
30 Apr 2024
Chief Manufacturing Officer
Sell
1,255
$12.71
$15.95K
Okazaki Jason A
1 Apr 2024
CEO and President
Sell
354
$13.07
$4.63K
White Nicole S
1 Apr 2024
Chief Manufacturing Officer
Sell
197
$13.07
$2.58K
Bjorkquist Jeanette M
1 Apr 2024
Principal Accounting Officer
Sell
114
$13.07
$1.49K
McHutchison John G
1 Apr 2024
Director
Sell
1,206
$13.07
$15.76K
Okazaki Jason A
27 Mar 2024
CEO and President
Sell
392
$12.87
$5.05K
White Nicole S
17 Nov 2023
Chief Manufacturing Officer
Sell
477
$0.69
$328.65
Okazaki Jason A
3 Oct 2023
CEO and President
Sell
2,363
$0.80
$1.88K
Delaney William E IV
3 Oct 2023
Chief Scientific Officer
Sell
1,891
$0.80
$1.50K
White Nicole S
3 Oct 2023
Chief Manufacturing Officer
Sell
1,891
$0.80
$1.50K
Okazaki Jason A
2 Aug 2023
CEO and President
Sell
11,827
$1.09
$12.87K
Delaney William E IV
2 Aug 2023
Chief Scientific Officer
Sell
9,461
$1.09
$10.29K
Bjorkquist Jeanette M
24 Jul 2023
Principal Accounting Officer
Sell
844
$1.07
$900.38
Delaney William E IV
30 May 2023
Chief Scientific Officer
Sell
4,232
$0.96
$4.05K
Okazaki Jason A
23 May 2023
CEO and President
Sell
6,561
$1.04
$6.83K
Delaney William E IV
23 May 2023
Chief Scientific Officer
Sell
6,561
$1.04
$6.83K
Bjorkquist Jeanette M
23 May 2023
Principal Accounting Officer
Sell
274
$1.04
$285.04
McHutchison John G
23 May 2023
Director
Sell
25,972
$1.04
$27.02K
Okazaki Jason A
30 Mar 2023
CEO and President
Sell
4,247
$0.82
$3.50K
Delaney William E IV
30 Mar 2023
Chief Scientific Officer
Sell
3,421
$0.82
$2.82K
Bjorkquist Jeanette M
30 Mar 2023
Principal Accounting Officer
Sell
774
$0.82
$637.16
McHutchison John G
30 Mar 2023
Director
Sell
14,883
$0.82
$12.25K
Okazaki Jason A
27 Mar 2023
CEO and President
Sell
4,693
$1.02
$4.78K
McHutchison John G
8 Aug 2022
Chief Executive Officer
Sell
12,314
$2.13
$26.20K
Samar Michael P.
25 Jul 2022
Chief Financial Officer
Sell
2,020
$2.22
$4.48K
Delaney William E IV
31 May 2022
Chief Scientific Officer
Sell
4,164
$1.92
$8.00K
McHutchison John G
30 Mar 2022
CEO and President
Sell
4,614
$2.17
$10.00K
Okazaki Jason A
30 Mar 2022
Chief Operating Officer
Sell
1,269
$2.17
$2.75K
Delaney William E IV
30 Mar 2022
Chief Scientific Officer
Sell
1,038
$2.17
$2.25K
Stamm Luisa M
30 Mar 2022
Chief Medical Officer
Sell
1,038
$2.17
$2.25K
Samar Michael P.
30 Mar 2022
Chief Financial Officer
Sell
2,285
$2.17
$4.95K
Okazaki Jason A
28 Mar 2022
Chief Operating Officer
Sell
4,617
$2.24
$10.36K
McHutchison John G
9 Aug 2021
CEO and President
Sell
12,156
$3.60
$43.78K
Delaney William E IV
27 May 2021
Chief Scientific Officer
Sell
4,129
$4.03
$16.64K
Papkoff Jacqueline Sybil
14 Dec 2020
SVP-CSO Microbiome
Sell
1,297
$6.15
$7.98K
Stamm Luisa M
9 Nov 2020
Chief Medical Officer
Sell
4,397
$5.10
$22.40K
McHutchison John G
7 Aug 2020
CEO and President
Sell
756
$22.50
$17.01K
McHutchison John G
7 Aug 2020
CEO and President
Sell
11,395
$21.76
$247.91K
Colonno Richard James
31 Mar 2020
EVP & CSO, Virology Ops
Sell
7,812
$15.04
$117.52K
Papkoff Jacqueline Sybil
30 Mar 2020
SVP-CSO Microbiome
Sell
1,254
$14.22
$17.83K
Papkoff Jacqueline Sybil
13 Dec 2019
SVP-CSO Microbiome
Sell
1,460
$21.00
$30.66K
Lopatin Uri A
6 Sep 2018
Chief Med. Off., VP Res. Dev.
Sell
336
$40.01
$13.44K
Lopatin Uri A
5 Sep 2018
Chief Med. Off., VP Res. Dev.
Sell
15,204
$40.09
$609.55K
RINGO WILLIAM R
12 May 2017
Director
Sell indirect
3,461
$22.00
$76.14K

What was left out

Form 4 filings counted 216
Amendments (4/A) skipped 0
Filings about a different issuer 0
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 11
Sales at will 63
Transactions with no price 2
Shares from compensation/vesting 2,227,303
Sales filed before the plan box existed 21
History held since 31 Mar 2017