There have been 50 recent insider transactions recorded for Assembly Biosciences, Inc. (ASMB), including 34 buys and 16 sells. Total insider buying was valued at $50.76M and total insider selling at $109.06K.
Notable insiders with recent activity include Bjorkquist Jeanette M, White Nicole S, Okazaki Jason A. Insider transactions can provide insights into how company leadership views the stock's valuation and future prospects.
Insider Transactions — ASMB
| Date |
Name |
Role |
Transaction |
Shares |
Avg. Price |
Value |
Shares Owned |
| 2026-03-30 |
Bjorkquist Jeanette M |
Pfo and Pao |
Informative Sell |
16 |
$27.49 |
$439.84 |
11,089 |
| 2026-03-30 |
White Nicole S |
Chief Manufacturing Officer |
Informative Sell |
9 |
$27.49 |
$247.41 |
37,477 |
| 2026-03-29 |
Okazaki Jason A |
CEO and President |
RSU Award |
94,250 |
- |
- |
111,916 |
| 2026-03-29 |
Delaney William E Iv |
Chief Scientific Officer |
RSU Award |
26,000 |
- |
- |
45,642 |
| 2026-03-29 |
Bjorkquist Jeanette M |
Pfo and Pao |
RSU Award |
6,500 |
- |
- |
11,417 |
| 2026-03-29 |
White Nicole S |
Chief Manufacturing Officer |
RSU Award |
26,000 |
- |
- |
37,674 |
| 2026-03-29 |
Gaggar Anuj |
Chief Medical Officer |
RSU Award |
26,000 |
- |
- |
28,000 |
| 2025-08-08 |
Gilead Sciences, Inc. |
10 Percent Owner |
Informative Buy |
1,147,960 |
$21.60 |
$24.8M |
1,147,960 |
| 2025-06-16 |
Bjorkquist Jeanette M |
Pfo and Pao |
RSU Award |
600 |
$17.24 |
$10.34K |
600 |
| 2025-06-05 |
Altig Anthony E |
Director |
RSU Award |
3,500 |
$15.81 |
$55.34K |
3,500 |
| 2025-06-05 |
Ringo William R |
Director |
RSU Award |
3,500 |
$15.81 |
$55.34K |
3,500 |
| 2025-06-05 |
Mahony Susan |
Director |
RSU Award |
3,500 |
$15.81 |
$55.34K |
3,500 |
| 2025-06-05 |
Consylman Gina |
Director |
RSU Award |
3,500 |
$15.81 |
$55.34K |
3,500 |
| 2025-06-05 |
Mchutchison John G |
Director |
RSU Award |
3,500 |
$15.81 |
$55.34K |
3,500 |
| 2025-06-05 |
Johnson-pratt Lisa |
Director |
RSU Award |
3,500 |
$15.81 |
$55.34K |
3,500 |
| 2025-06-05 |
Houghton Michael |
Director |
RSU Award |
3,500 |
$15.81 |
$55.34K |
3,500 |
| 2025-03-31 |
Okazaki Jason A |
CEO and President |
Informative Sell |
355 |
$9.85 |
$3.5K |
14,757 |
| 2025-03-31 |
Bjorkquist Jeanette M |
Principal Accounting Officer |
Informative Sell |
180 |
$9.85 |
$1.77K |
4,617 |
| 2025-03-31 |
White Nicole S |
Chief Manufacturing Officer |
Informative Sell |
197 |
$9.85 |
$1.94K |
11,674 |
| 2025-03-31 |
Mchutchison John G |
Director |
Informative Sell |
757 |
$9.85 |
$7.46K |
18,347 |
| 2025-03-29 |
Okazaki Jason A |
CEO and President |
RSU Award |
71,100 |
$10.62 |
$755.08K |
71,100 |
| 2025-03-29 |
Delaney William E Iv |
Chief Scientific Officer |
RSU Award |
25,500 |
$10.62 |
$270.81K |
25,500 |
| 2025-03-29 |
Bjorkquist Jeanette M |
Principal Accounting Officer |
RSU Award |
1,900 |
$10.62 |
$20.18K |
1,900 |
| 2025-03-29 |
White Nicole S |
Chief Manufacturing Officer |
RSU Award |
20,400 |
$10.62 |
$216.65K |
20,400 |
| 2025-03-29 |
Gaggar Anuj |
Chief Medical Officer |
RSU Award |
24,200 |
$10.62 |
$257K |
24,200 |
| 2024-12-30 |
Houghton Michael |
Director |
Informative Buy |
3,202 |
$15.61 |
$50K |
3,202 |
| 2024-12-19 |
Gilead Sciences, Inc. |
10 Percent Owner |
Informative Buy |
940,499 |
$21.37 |
$20.1M |
2,209,471 |
| 2024-11-25 |
Schornstein Alexander |
10 Percent Owner |
Informative Buy |
2,976 |
$15.00 |
$44.64K |
723,113 |
| 2024-11-22 |
Schornstein Alexander |
10 Percent Owner |
Informative Buy |
17,024 |
$14.87 |
$253.1K |
720,137 |
| 2024-11-18 |
White Nicole S |
Chief Manufacturing Officer |
Informative Sell |
40 |
$16.29 |
$651.60 |
11,871 |
| 2024-10-08 |
Schornstein Alexander |
10 Percent Owner |
Informative Buy |
10,000 |
$14.58 |
$145.8K |
703,113 |
| 2024-10-03 |
Okazaki Jason A |
CEO and President |
Informative Sell |
197 |
$14.81 |
$2.92K |
14,904 |
| 2024-10-03 |
White Nicole S |
Chief Manufacturing Officer |
Informative Sell |
157 |
$14.81 |
$2.33K |
11,911 |
| 2024-08-02 |
Okazaki Jason A |
CEO and President |
Informative Sell |
981 |
$14.23 |
$13.96K |
15,101 |
| 2024-08-02 |
White Nicole S |
Chief Manufacturing Officer |
Informative Sell |
785 |
$14.23 |
$11.17K |
12,068 |
| 2024-07-05 |
Schornstein Alexander |
10 Percent Owner |
Informative Buy |
4,438 |
$12.52 |
$55.56K |
693,113 |
| 2024-07-03 |
Schornstein Alexander |
10 Percent Owner |
Informative Buy |
4,562 |
$12.29 |
$56.07K |
688,675 |
| 2024-06-17 |
Gilead Sciences, Inc. |
10 Percent Owner |
Informative Buy |
179,500 |
$17.00 |
$3.05M |
179,500 |
| 2024-05-29 |
Altig Anthony E |
Director |
RSU Award |
2,750 |
$15.06 |
$41.42K |
2,750 |
| 2024-05-29 |
Ringo William R |
Director |
RSU Award |
2,750 |
$15.06 |
$41.42K |
2,750 |
| 2024-05-29 |
Mahony Susan |
Director |
RSU Award |
2,750 |
$15.06 |
$41.42K |
2,750 |
| 2024-05-29 |
Consylman Gina |
Director |
RSU Award |
2,750 |
$15.06 |
$41.42K |
2,750 |
| 2024-05-29 |
Mchutchison John G |
Director |
RSU Award |
2,750 |
$15.06 |
$41.42K |
2,750 |
| 2024-05-29 |
Johnson-pratt Lisa |
Director |
RSU Award |
2,750 |
$15.06 |
$41.42K |
2,750 |
| 2024-05-29 |
Houghton Michael |
Director |
RSU Award |
2,750 |
$15.06 |
$41.42K |
2,750 |
| 2024-05-23 |
Mchutchison John G |
Director |
Informative Sell |
2,117 |
$14.93 |
$31.61K |
19,104 |
| 2024-05-23 |
Okazaki Jason A |
CEO and President |
Informative Sell |
549 |
$14.93 |
$8.2K |
16,082 |
| 2024-05-23 |
Bjorkquist Jeanette M |
Principal Accounting Officer |
Informative Sell |
24 |
$14.93 |
$358.41 |
3,142 |
| 2024-05-23 |
White Nicole S |
Chief Manufacturing Officer |
Informative Sell |
172 |
$14.93 |
$2.57K |
12,853 |
| 2024-04-30 |
Okazaki Jason A |
CEO and President |
Informative Sell |
1,569 |
$12.71 |
$19.94K |
16,423 |
■ Informative Buy/Sell — open market transaction (most significant)
■ Uninformative Buy — award, option exercise, conversion
■ Uninformative Sell — tax withholding, award vest sale
■ Neutral — gift, trust, expiry
