In the last 12 months, insiders at ASSEMBLY BIOSCIENCES, INC. ($ASMB) filed 114 transactions with the SEC: 14 open-market purchases totaling $21,571,250 and 41 sales totaling $266,094. Net insider sentiment: net buying.
ASSEMBLY BIOSCIENCES, INC. operates in the Pharmaceutical preparations industry (Life sciences sector).
Most Active Insiders
- GILEAD SCIENCES, INC. (TenPercentOwner) — 3 transactions totaling $20,098,464
- Schornstein Alexander (TenPercentOwner) — 10 transactions totaling $1,422,789
- Okazaki Jason A (CEO and President) — 21 transactions totaling $88,036
- McHutchison John G (Not found) — 5 transactions totaling $54,835
- Houghton Michael (Not found) — 3 transactions totaling $49,998
View all SEC Filings for ASSEMBLY BIOSCIENCES, INC. (ASMB).
Set Up your own filters →Recent Insider Transactions
| Transaction Date | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|
| March 29, 2026 | Okazaki Jason A | CEO and President | A | Common Stock | 94250 | $0.00 | 111,916.0000 | 15,817,140 | 533.51% | 0.60% |
| March 29, 2026 | Delaney William E IV | Chief Scientific Officer | A | Common Stock | 26000 | $0.00 | 45,642.0000 | 15,817,140 | 132.37% | 0.16% |
| March 29, 2026 | Gaggar Anuj | Chief Medical Officer | A | Common Stock | 26000 | $0.00 | 28,000.0000 | 15,817,140 | 1300.00% | 0.16% |
| March 30, 2026 | White Nicole S | Chief Manufacturing Officer | S | Common Stock | 9 | $27.49 | 37,477.0000 | 15,817,140 | 0.02% | 0.00% |
| March 30, 2026 | White Nicole S | Chief Manufacturing Officer | S | Common Stock | 188 | $26.65 | 37,486.0000 | 15,817,140 | 0.50% | 0.00% |
| March 29, 2026 | White Nicole S | Chief Manufacturing Officer | A | Common Stock | 26000 | $0.00 | 37,674.0000 | 15,817,140 | 222.72% | 0.16% |
| March 30, 2026 | Bjorkquist Jeanette M | PFO and PAO | S | Common Stock | 16 | $27.49 | 11,089.0000 | 15,817,140 | 0.14% | 0.00% |
| March 30, 2026 | Bjorkquist Jeanette M | PFO and PAO | S | Common Stock | 312 | $26.65 | 11,105.0000 | 15,817,140 | 2.73% | 0.00% |
| March 29, 2026 | Bjorkquist Jeanette M | PFO and PAO | A | Common Stock | 6500 | $0.00 | 11,417.0000 | 15,817,140 | 132.19% | 0.04% |
| June 16, 2025 | Bjorkquist Jeanette M | PFO and PAO | A | Common Stock | 300 | $0.00 | 5,097.0000 | 7,503,385 | 6.25% | 0.00% |
| June 16, 2025 | Bjorkquist Jeanette M | PFO and PAO | A | Stock Option (right to buy) | 600 | $0.00 | 600.0000 | 7,503,385 | 9999.99% | 0.01% |
| June 5, 2025 | Consylman Gina | Not found | A | Stock Option (right to buy) | 3500 | $0.00 | 3,500.0000 | 7,503,385 | 9999.99% | 0.05% |
| June 5, 2025 | Houghton Michael | Not found | A | Stock Option (right to buy) | 3500 | $0.00 | 3,500.0000 | 7,503,385 | 9999.99% | 0.05% |
| June 5, 2025 | Mahony Susan | Not found | A | Stock Option (right to buy) | 3500 | $0.00 | 3,500.0000 | 7,503,385 | 9999.99% | 0.05% |
| June 5, 2025 | McHutchison John G | Not found | A | Stock Option (right to buy) | 3500 | $0.00 | 3,500.0000 | 7,503,385 | 9999.99% | 0.05% |
| June 5, 2025 | Johnson-Pratt Lisa | Not found | A | Stock Option (right to buy) | 3500 | $0.00 | 3,500.0000 | 7,503,385 | 9999.99% | 0.05% |
| June 5, 2025 | RINGO WILLIAM R | Not found | A | Stock Option (right to buy) | 3500 | $0.00 | 3,500.0000 | 7,503,385 | 9999.99% | 0.05% |
| June 5, 2025 | ALTIG ANTHONY E | Not found | A | Stock Option (right to buy) | 3500 | $0.00 | 3,500.0000 | 7,503,385 | 9999.99% | 0.05% |
| March 31, 2025 | McHutchison John G | Not found | S | Common Stock | 757 | $9.85 | 18,347.0000 | 7,503,385 | 3.96% | 0.01% |
| March 29, 2025 | Delaney William E IV | Chief Scientific Officer | A | Stock Option (right to buy) | 25500 | $0.00 | 25,500.0000 | 7,503,385 | 9999.99% | 0.34% |
| March 29, 2025 | Bjorkquist Jeanette M | Principal Accounting Officer | A | Common Stock | 1655 | $0.00 | 4,797.0000 | 7,503,385 | 52.67% | 0.02% |
| March 31, 2025 | Bjorkquist Jeanette M | Principal Accounting Officer | S | Common Stock | 180 | $9.85 | 4,617.0000 | 7,503,385 | 3.75% | 0.00% |
| March 31, 2025 | Okazaki Jason A | CEO and President | S | Common Stock | 355 | $9.85 | 14,757.0000 | 7,503,385 | 2.35% | 0.00% |
| March 29, 2025 | Bjorkquist Jeanette M | Principal Accounting Officer | A | Stock Option (right to buy) | 1900 | $0.00 | 1,900.0000 | 7,503,385 | 9999.99% | 0.03% |
| March 29, 2025 | Gaggar Anuj | Chief Medical Officer | A | Stock Option (right to buy) | 24200 | $0.00 | 24,200.0000 | 7,503,385 | 9999.99% | 0.32% |
| March 29, 2025 | White Nicole S | Chief Manufacturing Officer | A | Stock Option (right to buy) | 20400 | $0.00 | 20,400.0000 | 7,503,385 | 9999.99% | 0.27% |
| March 31, 2025 | White Nicole S | Chief Manufacturing Officer | S | Common Stock | 197 | $9.85 | 11,674.0000 | 7,503,385 | 1.66% | 0.00% |
| March 29, 2025 | Okazaki Jason A | CEO and President | A | Stock Option (right to buy) | 71100 | $0.00 | 71,100.0000 | 7,503,385 | 9999.99% | 0.95% |
| Dec. 30, 2024 | Houghton Michael | Not found | P | Common Stock | 3202 | $15.61 | 3,202.0000 | 0 | 9999.99% | 0.00% |
| Dec. 19, 2024 | GILEAD SCIENCES, INC. | TenPercentOwner | P | Common Stock | 940499 | $21.37 | 2,209,471.0000 | 0 | 74.12% | 0.00% |
| Nov. 25, 2024 | Schornstein Alexander | TenPercentOwner | P | Common Stock | 5000 | $14.85 | 728,113.0000 | 0 | 0.69% | 0.00% |
| Nov. 22, 2024 | Schornstein Alexander | TenPercentOwner | P | Common Stock | 17024 | $14.87 | 720,137.0000 | 0 | 2.42% | 0.00% |
| Nov. 25, 2024 | Schornstein Alexander | TenPercentOwner | P | Common Stock | 2976 | $15.00 | 723,113.0000 | 0 | 0.41% | 0.00% |
| Nov. 18, 2024 | White Nicole S | Chief Manufacturing Officer | S | Common Stock | 40 | $16.29 | 11,871.0000 | 0 | 0.34% | 0.00% |
| Oct. 8, 2024 | Schornstein Alexander | TenPercentOwner | P | Common Stock | 10000 | $14.58 | 703,113.0000 | 0 | 1.44% | 0.00% |
| Oct. 3, 2024 | White Nicole S | Chief Manufacturing Officer | S | Common Stock | 157 | $14.81 | 11,911.0000 | 0 | 1.30% | 0.00% |
| Oct. 3, 2024 | Okazaki Jason A | CEO and President | S | Common Stock | 197 | $14.81 | 14,904.0000 | 0 | 1.30% | 0.00% |
| Aug. 2, 2024 | Okazaki Jason A | CEO and President | S | Common Stock | 981 | $14.23 | 15,101.0000 | 0 | 6.10% | 0.00% |
| Aug. 2, 2024 | White Nicole S | Chief Manufacturing Officer | S | Common Stock | 785 | $14.23 | 12,068.0000 | 0 | 6.11% | 0.00% |
| July 3, 2024 | Schornstein Alexander | TenPercentOwner | P | Common Stock | 4562 | $12.29 | 688,675.0000 | 0 | 0.67% | 0.00% |
| July 5, 2024 | Schornstein Alexander | TenPercentOwner | P | Common Stock | 4438 | $12.52 | 693,113.0000 | 0 | 0.64% | 0.00% |
| June 17, 2024 | GILEAD SCIENCES, INC. | TenPercentOwner | P | Warrant to purchase Common Stock | 179500 | $0.00 | 179,500.0000 | 0 | 9999.99% | 0.00% |
| June 17, 2024 | GILEAD SCIENCES, INC. | TenPercentOwner | P | Common Stock | 179500 | $0.00 | 1,268,972.0000 | 0 | 16.48% | 0.00% |
| May 29, 2024 | Johnson-Pratt Lisa | Not found | A | Stock Option (right to buy) | 2750 | $0.00 | 2,750.0000 | 0 | 9999.99% | 0.00% |
| May 29, 2024 | McHutchison John G | Not found | A | Stock Option (right to buy) | 2750 | $0.00 | 2,750.0000 | 0 | 9999.99% | 0.00% |
| May 29, 2024 | RINGO WILLIAM R | Not found | A | Stock Option (right to buy) | 2750 | $0.00 | 2,750.0000 | 0 | 9999.99% | 0.00% |
| May 29, 2024 | Mahony Susan | Not found | A | Stock Option (right to buy) | 2750 | $0.00 | 2,750.0000 | 0 | 9999.99% | 0.00% |
| May 29, 2024 | Houghton Michael | Not found | A | Stock Option (right to buy) | 2750 | $0.00 | 2,750.0000 | 0 | 9999.99% | 0.00% |
| May 29, 2024 | Consylman Gina | Not found | A | Stock Option (right to buy) | 2750 | $0.00 | 2,750.0000 | 0 | 9999.99% | 0.00% |
| May 29, 2024 | ALTIG ANTHONY E | Not found | A | Stock Option (right to buy) | 2750 | $0.00 | 2,750.0000 | 0 | 9999.99% | 0.00% |
| May 23, 2024 | McHutchison John G | Not found | S | Common Stock | 2117 | $14.93 | 19,104.0000 | 0 | 9.98% | 0.00% |
| May 23, 2024 | Okazaki Jason A | CEO and President | S | Common Stock | 549 | $14.93 | 16,082.0000 | 0 | 3.30% | 0.00% |
| May 23, 2024 | Bjorkquist Jeanette M | Principal Accounting Officer | S | Common Stock | 24 | $14.93 | 3,142.0000 | 0 | 0.76% | 0.00% |
| May 23, 2024 | White Nicole S | Chief Manufacturing Officer | S | Common Stock | 172 | $14.93 | 12,853.0000 | 0 | 1.32% | 0.00% |
| April 30, 2024 | Okazaki Jason A | CEO and President | S | Common Stock | 1569 | $12.71 | 16,423.0000 | 0 | 8.72% | 0.00% |
| April 29, 2024 | Okazaki Jason A | CEO and President | A | Common Stock | 4166 | $0.00 | 17,992.0000 | 0 | 30.13% | 0.00% |
| April 30, 2024 | White Nicole S | Chief Manufacturing Officer | S | Common Stock | 1255 | $12.71 | 13,025.0000 | 0 | 8.79% | 0.00% |
| April 29, 2024 | White Nicole S | Chief Manufacturing Officer | A | Common Stock | 3333 | $0.00 | 14,280.0000 | 0 | 30.45% | 0.00% |
| April 29, 2024 | Delaney William E IV | Chief Scientific Officer | A | Common Stock | 3333 | $0.00 | 16,109.0000 | 0 | 26.09% | 0.00% |
| April 1, 2024 | Okazaki Jason A | CEO and President | S | Common Stock | 354 | $13.07 | 13,826.0000 | 0 | 2.50% | 0.00% |
| April 1, 2024 | McHutchison John G | Not found | S | Common Stock | 1206 | $13.07 | 21,221.0000 | 0 | 5.38% | 0.00% |
| March 29, 2024 | Bjorkquist Jeanette M | Principal Accounting Officer | A | Common Stock | 850 | $0.00 | 3,280.0000 | 0 | 34.98% | 0.00% |
| April 1, 2024 | Bjorkquist Jeanette M | Principal Accounting Officer | S | Common Stock | 114 | $13.07 | 3,166.0000 | 0 | 3.48% | 0.00% |
| March 29, 2024 | Bjorkquist Jeanette M | Principal Accounting Officer | A | Stock Option (right to buy) | 1550 | $0.00 | 1,550.0000 | 0 | 9999.99% | 0.00% |
| April 1, 2024 | White Nicole S | Chief Manufacturing Officer | S | Common Stock | 197 | $13.07 | 10,947.0000 | 0 | 1.77% | 0.00% |
| March 29, 2024 | White Nicole S | Chief Manufacturing Officer | A | Stock Option (right to buy) | 17500 | $0.00 | 17,500.0000 | 0 | 9999.99% | 0.00% |
| March 29, 2024 | Delaney William E IV | Chief Scientific Officer | A | Stock Option (right to buy) | 20000 | $0.00 | 20,000.0000 | 0 | 9999.99% | 0.00% |
| March 29, 2024 | Okazaki Jason A | CEO and President | A | Stock Option (right to buy) | 65000 | $0.00 | 65,000.0000 | 0 | 9999.99% | 0.00% |
| March 27, 2024 | Okazaki Jason A | CEO and President | S | Common Stock | 392 | $12.87 | 14,180.0000 | 0 | 2.69% | 0.00% |
| Jan. 18, 2024 | Schornstein Alexander | TenPercentOwner | P | Common Stock | 345086 | $0.80 | 8,209,372.0000 | 0 | 4.39% | 0.00% |
| Jan. 17, 2024 | Schornstein Alexander | TenPercentOwner | P | Common Stock | 299994 | $0.78 | 7,864,286.0000 | 0 | 3.97% | 0.00% |
| Nov. 21, 2023 | Schornstein Alexander | TenPercentOwner | P | Common Stock | 100000 | $0.67 | 7,564,292.0000 | 0 | 1.34% | 0.00% |
| Nov. 20, 2023 | Schornstein Alexander | TenPercentOwner | P | Common Stock | 300000 | $0.72 | 7,464,292.0000 | 0 | 4.19% | 0.00% |
| Nov. 17, 2023 | White Nicole S | Chief Manufacturing Officer | S | Common Stock | 477 | $0.69 | 93,774.0000 | 0 | 0.51% | 0.00% |
| Nov. 8, 2023 | Gaggar Anuj | Chief Medical Officer | A | Stock Options (right to buy) | 500000 | $0.00 | 500,000.0000 | 0 | 9999.99% | 0.00% |
| Oct. 2, 2023 | Delaney William E IV | Chief Scientific Officer | A | Common Stock | 10000 | $0.00 | 152,744.0000 | 0 | 7.01% | 0.00% |
| Oct. 3, 2023 | Delaney William E IV | Chief Scientific Officer | S | Common Stock | 1891 | $0.80 | 150,853.0000 | 0 | 1.24% | 0.00% |
| Oct. 3, 2023 | Okazaki Jason A | CEO and President | S | Common Stock | 2363 | $0.80 | 174,923.0000 | 0 | 1.33% | 0.00% |
| Oct. 2, 2023 | Okazaki Jason A | CEO and President | A | Common Stock | 12500 | $0.00 | 177,286.0000 | 0 | 7.59% | 0.00% |
| Oct. 3, 2023 | White Nicole S | Chief Manufacturing Officer | S | Common Stock | 1891 | $0.80 | 94,251.0000 | 0 | 1.97% | 0.00% |
| Oct. 2, 2023 | White Nicole S | Chief Manufacturing Officer | A | Common Stock | 10000 | $0.00 | 96,142.0000 | 0 | 11.61% | 0.00% |
| Aug. 2, 2023 | Okazaki Jason A | CEO and President | S | Common Stock | 11827 | $1.09 | 164,786.0000 | 0 | 6.70% | 0.00% |
| Aug. 2, 2023 | Delaney William E IV | Chief Scientific Officer | S | Common Stock | 9461 | $1.09 | 142,744.0000 | 0 | 6.22% | 0.00% |
| July 24, 2023 | Bjorkquist Jeanette M | Principal Accounting Officer | S | Common Stock | 844 | $1.07 | 26,688.0000 | 0 | 3.07% | 0.00% |
| June 22, 2023 | Okazaki Jason A | CEO and President | A | Common Stock | 50000 | $0.00 | 176,613.0000 | 0 | 39.49% | 0.00% |
| June 22, 2023 | Delaney William E IV | Chief Scientific Officer | A | Common Stock | 40000 | $0.00 | 152,205.0000 | 0 | 35.65% | 0.00% |
| May 30, 2023 | Delaney William E IV | Chief Scientific Officer | S | Common Stock | 4232 | $0.96 | 112,205.0000 | 0 | 3.63% | 0.00% |
| May 25, 2023 | Consylman Gina | Director | A | Stock Option (right to buy) | 20000 | $0.00 | 20,000.0000 | 0 | 9999.99% | 0.00% |
| May 25, 2023 | ALTIG ANTHONY E | Director | A | Stock Option (right to buy) | 20000 | $0.00 | 20,000.0000 | 0 | 9999.99% | 0.00% |
| May 25, 2023 | Houghton Michael | Director | A | Stock Option (right to buy) | 20000 | $0.00 | 20,000.0000 | 0 | 9999.99% | 0.00% |
| May 25, 2023 | Johnson-Pratt Lisa | Director | A | Stock Option (right to buy) | 20000 | $0.00 | 20,000.0000 | 0 | 9999.99% | 0.00% |
| May 25, 2023 | Mahony Susan | Director | A | Stock Option (right to buy) | 20000 | $0.00 | 20,000.0000 | 0 | 9999.99% | 0.00% |
| May 25, 2023 | McHutchison John G | Director | A | Stock Option (right to buy) | 20000 | $0.00 | 20,000.0000 | 0 | 9999.99% | 0.00% |
| May 25, 2023 | RINGO WILLIAM R | Director | A | Stock Option (right to buy) | 20000 | $0.00 | 20,000.0000 | 0 | 9999.99% | 0.00% |
| May 23, 2023 | Okazaki Jason A | CEO and President | S | Common Stock | 6561 | $1.04 | 126,613.0000 | 0 | 4.93% | 0.00% |
| May 22, 2023 | Okazaki Jason A | CEO and President | A | Common Stock | 35000 | $0.00 | 133,174.0000 | 0 | 35.65% | 0.00% |
| May 23, 2023 | Delaney William E IV | Chief Scientific Officer | S | Common Stock | 6561 | $1.04 | 116,437.0000 | 0 | 5.33% | 0.00% |
| May 22, 2023 | McHutchison John G | Director | A | Common Stock | 117500 | $0.00 | 295,132.0000 | 0 | 66.15% | 0.00% |
| May 23, 2023 | Bjorkquist Jeanette M | Principal Accounting Officer | S | Common Stock | 274 | $1.04 | 27,532.0000 | 0 | 0.99% | 0.00% |
| May 22, 2023 | Bjorkquist Jeanette M | Principal Accounting Officer | A | Common Stock | 1500 | $0.00 | 27,806.0000 | 0 | 5.70% | 0.00% |
| May 23, 2023 | McHutchison John G | Director | S | Common Stock | 25972 | $1.04 | 169,160.0000 | 0 | 13.31% | 0.00% |
| May 22, 2023 | Delaney William E IV | Chief Scientific Officer | A | Common Stock | 35000 | $0.00 | 122,998.0000 | 0 | 39.77% | 0.00% |
| March 29, 2023 | Bjorkquist Jeanette M | Principal Accounting Officer | A | Common Stock | 6250 | $0.00 | 24,580.0000 | 0 | 34.10% | 0.00% |
| March 30, 2023 | Bjorkquist Jeanette M | Principal Accounting Officer | S | Common Stock | 774 | $0.82 | 23,806.0000 | 0 | 3.15% | 0.00% |
| Feb. 16, 2023 | Bjorkquist Jeanette M | Principal Accounting Officer | A | Stock Option (right to buy) | 2000 | $0.00 | 2,000.0000 | 0 | 9999.99% | 0.00% |
| March 29, 2023 | Bjorkquist Jeanette M | Principal Accounting Officer | A | Stock Option (right to buy) | 12500 | $0.00 | 12,500.0000 | 0 | 9999.99% | 0.00% |
| March 30, 2023 | Delaney William E IV | Chief Scientific Officer | S | Common Stock | 3421 | $0.82 | 85,498.0000 | 0 | 3.85% | 0.00% |
| March 29, 2023 | Delaney William E IV | Chief Scientific Officer | A | Stock Option (right to buy) | 140000 | $0.00 | 140,000.0000 | 0 | 9999.99% | 0.00% |
| March 30, 2023 | Okazaki Jason A | CEO and President | S | Common Stock | 4247 | $0.82 | 98,174.0000 | 0 | 4.15% | 0.00% |
| March 29, 2023 | Okazaki Jason A | CEO and President | A | Stock Option (right to buy) | 470000 | $0.00 | 470,000.0000 | 0 | 9999.99% | 0.00% |
| March 30, 2023 | McHutchison John G | Director | S | Common Stock | 14883 | $0.82 | 177,632.0000 | 0 | 7.73% | 0.00% |
| March 27, 2023 | Okazaki Jason A | CEO and President | S | Common Stock | 4693 | $1.02 | 102,421.0000 | 0 | 4.38% | 0.00% |
| Feb. 16, 2023 | Delaney William E IV | Chief Scientific Officer | A | Common Stock | 10000 | $0.00 | 88,919.0000 | 0 | 12.67% | 0.00% |
| Feb. 16, 2023 | Okazaki Jason A | CEO and President | A | Common Stock | 12500 | $0.00 | 107,114.0000 | 0 | 13.21% | 0.00% |