ASMB
Assembly Biosciences, Inc.$25.61+0.16 (+0.63%)Prev Close$25.44·MCap$494.8M·P/E—·Vol904.9K·Yield—
▲
Buys (12M)
0
$0.00
▼
Sells (12M)
3
$14.7K
◆
Net Activity
Net Seller
$14.7K
●
Active Insiders
2
last 12 mo
Over the past 12 months, insider activity at Assembly Biosciences, Inc. (ASMB) has been exclusively selling, with 0 insider purchases totaling $0.00 and 3 insider sales totaling $14.7K. The most recent insider transaction was by Bjorkquist Jeanette M (officer: PFO and PAO), who sold $674.25 worth of shares on Jun 18, 2026. Assembly Biosciences, Inc. operates in the Healthcare sector, within the Biotechnology industry, with a market cap of $494.8M.
ASMB Insider Trading Activity
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Jun 18, 2026 | Bjorkquist Jeanette M | officer: PFO and PAO | Sell | 29 | $23.25 | $674.25 | 14,560 |
| Mar 31, 2026 | White Nicole S | officer: Chief Manufacturing Officer | Sell | 197 | $26.69 | $5.3K | 37,486 |
| Mar 31, 2026 | Bjorkquist Jeanette M | officer: PFO and PAO | Sell | 328 | $26.69 | $8.8K | 11,105 |
| Mar 31, 2025 | McHutchison John G | Director | Sell | 757 | $9.85 | $7.5K | 0 |
| Mar 29, 2025 | Bjorkquist Jeanette M | Principal Accounting Officer | Sell | 180 | $9.85 | $1.8K | 0 |
| Mar 29, 2025 | Okazaki Jason A | CEO and President | Sell | 355 | $9.85 | $3.5K | 0 |
| Mar 29, 2025 | White Nicole S | Chief Manufacturing Officer | Sell | 197 | $9.85 | $1.9K | 0 |
| Dec 30, 2024 | Houghton Michael | Director | Buy | 3,202 | $15.61 | $50.0K | 0 |
| Nov 22, 2024 | Schornstein Alexander | 10% Owner | Buy | 25,000 | $14.88 | $372.0K | 0 |
| Nov 18, 2024 | White Nicole S | Chief Manufacturing Officer | Sell | 40 | $16.29 | $651.60 | 0 |
| Oct 8, 2024 | Schornstein Alexander | 10% Owner | Buy | 10,000 | $14.58 | $145.8K | 0 |
| Oct 3, 2024 | Okazaki Jason A | CEO and President | Sell | 197 | $14.81 | $2.9K | 0 |
| Oct 3, 2024 | White Nicole S | Chief Manufacturing Officer | Sell | 157 | $14.81 | $2.3K | 0 |
| Aug 2, 2024 | Okazaki Jason A | CEO and President | Sell | 981 | $14.23 | $14.0K | 0 |
| Aug 2, 2024 | White Nicole S | Chief Manufacturing Officer | Sell | 785 | $14.23 | $11.2K | 0 |
| Jul 3, 2024 | Schornstein Alexander | 10% Owner | Buy | 9,000 | $12.40 | $111.6K | 0 |
| May 23, 2024 | Bjorkquist Jeanette M | Principal Accounting Officer | Sell | 24 | $14.93 | $358.41 | 0 |
| May 23, 2024 | McHutchison John G | Director | Sell | 2,117 | $14.93 | $31.6K | 0 |
| May 23, 2024 | Okazaki Jason A | CEO and President | Sell | 549 | $14.93 | $8.2K | 0 |
| May 23, 2024 | White Nicole S | Chief Manufacturing Officer | Sell | 172 | $14.93 | $2.6K | 0 |
| Apr 29, 2024 | Okazaki Jason A | CEO and President | Sell | 1,569 | $12.71 | $19.9K | 0 |
| Apr 29, 2024 | White Nicole S | Chief Manufacturing Officer | Sell | 1,255 | $12.71 | $15.9K | 0 |
| Apr 1, 2024 | McHutchison John G | Director | Sell | 1,206 | $13.07 | $15.8K | 0 |
| Mar 29, 2024 | Bjorkquist Jeanette M | Principal Accounting Officer | Sell | 114 | $13.07 | $1.5K | 0 |
| Mar 29, 2024 | Okazaki Jason A | CEO and President | Sell | 354 | $13.07 | $4.6K | 0 |
| Mar 29, 2024 | White Nicole S | Chief Manufacturing Officer | Sell | 197 | $13.07 | $2.6K | 0 |
| Mar 27, 2024 | Okazaki Jason A | CEO and President | Sell | 392 | $12.87 | $5.0K | 0 |
| Jan 17, 2024 | Schornstein Alexander | 10% Owner | Buy | 645,080 | $0.79 | $511.3K4.1% OS | 0 |
| Nov 20, 2023 | Schornstein Alexander | 10% Owner | Buy | 400,000 | $0.71 | $282.1K2.5% OS | 0 |
| Nov 17, 2023 | White Nicole S | Chief Manufacturing Officer | Sell | 477 | $0.69 | $328.65 | 0 |
| Oct 2, 2023 | Okazaki Jason A | CEO and President | Sell | 2,363 | $0.80 | $1.9K | 0 |
| Oct 2, 2023 | White Nicole S | Chief Manufacturing Officer | Sell | 1,891 | $0.80 | $1.5K | 0 |
| Aug 2, 2023 | Delaney William E IV | Chief Scientific Officer | Sell | 9,461 | $1.09 | $10.3K | 0 |
| Aug 2, 2023 | Okazaki Jason A | CEO and President | Sell | 11,827 | $1.09 | $12.9K | 0 |
| Jul 24, 2023 | Bjorkquist Jeanette M | Principal Accounting Officer | Sell | 844 | $1.07 | $900.38 | 0 |
| May 30, 2023 | Delaney William E IV | Chief Scientific Officer | Sell | 4,232 | $0.96 | $4.0K | 0 |
| May 22, 2023 | Bjorkquist Jeanette M | Principal Accounting Officer | Sell | 274 | $1.04 | $285.04 | 0 |
| May 22, 2023 | Delaney William E IV | Chief Scientific Officer | Sell | 6,561 | $1.04 | $6.8K | 0 |
| May 22, 2023 | McHutchison John G | Director | Sell | 25,972 | $1.04 | $27.0K | 0 |
| Mar 30, 2023 | McHutchison John G | Director | Sell | 14,883 | $0.82 | $12.3K | 0 |
| Mar 29, 2023 | Delaney William E IV | Chief Scientific Officer | Sell | 3,421 | $0.82 | $2.8K | 0 |
| Mar 29, 2023 | Okazaki Jason A | CEO and President | Sell | 4,247 | $0.82 | $3.5K | 0 |
| Mar 27, 2023 | Okazaki Jason A | CEO and President | Sell | 4,693 | $1.02 | $4.8K | 0 |
| Feb 16, 2023 | Bjorkquist Jeanette M | Principal Accounting Officer | Sell | 774 | $0.82 | $637.16 | 0 |
| Aug 8, 2022 | McHutchison John G | Chief Executive Officer | Sell | 12,314 | $2.13 | $26.2K | 0 |
| Jul 25, 2022 | Samar Michael P. | Chief Financial Officer | Sell | 2,020 | $2.22 | $4.5K | 0 |
| May 31, 2022 | Delaney William E IV | Chief Scientific Officer | Sell | 4,164 | $1.92 | $8.0K | 0 |
| Mar 29, 2022 | McHutchison John G | CEO and President | Sell | 4,614 | $2.17 | $10.0K | 0 |
| Mar 29, 2022 | Okazaki Jason A | Chief Operating Officer | Sell | 1,269 | $2.17 | $2.8K | 0 |
| Mar 29, 2022 | Samar Michael P. | Chief Financial Officer | Sell | 2,285 | $2.17 | $5.0K | 0 |
Showing 1–50 of 54
1 / 2
ASMB Insider Buying Activity
The following table shows recent insider purchases of Assembly Biosciences, Inc. (ASMB) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Dec 30, 2024 | Houghton Michael | Director | Buy | 3,202 | $15.61 | $50.0K | 0 |
| Nov 22, 2024 | Schornstein Alexander | 10% Owner | Buy | 25,000 | $14.88 | $372.0K | 0 |
| Oct 8, 2024 | Schornstein Alexander | 10% Owner | Buy | 10,000 | $14.58 | $145.8K | 0 |
| Jul 3, 2024 | Schornstein Alexander | 10% Owner | Buy | 9,000 | $12.40 | $111.6K | 0 |
| Jan 17, 2024 | Schornstein Alexander | 10% Owner | Buy | 645,080 | $0.79 | $511.3K4.1% OS | 0 |
| Nov 20, 2023 | Schornstein Alexander | 10% Owner | Buy | 400,000 | $0.71 | $282.1K2.5% OS | 0 |
ASMB Insider Selling Activity
The following table shows recent insider sales of Assembly Biosciences, Inc. (ASMB) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Jun 18, 2026 | Bjorkquist Jeanette M | officer: PFO and PAO | Sell | 29 | $23.25 | $674.25 | 14,560 |
| Mar 31, 2026 | White Nicole S | officer: Chief Manufacturing Officer | Sell | 197 | $26.69 | $5.3K | 37,486 |
| Mar 31, 2026 | Bjorkquist Jeanette M | officer: PFO and PAO | Sell | 328 | $26.69 | $8.8K | 11,105 |
| Mar 31, 2025 | McHutchison John G | Director | Sell | 757 | $9.85 | $7.5K | 0 |
| Mar 29, 2025 | Bjorkquist Jeanette M | Principal Accounting Officer | Sell | 180 | $9.85 | $1.8K | 0 |
| Mar 29, 2025 | Okazaki Jason A | CEO and President | Sell | 355 | $9.85 | $3.5K | 0 |
| Mar 29, 2025 | White Nicole S | Chief Manufacturing Officer | Sell | 197 | $9.85 | $1.9K | 0 |
| Nov 18, 2024 | White Nicole S | Chief Manufacturing Officer | Sell | 40 | $16.29 | $651.60 | 0 |
| Oct 3, 2024 | Okazaki Jason A | CEO and President | Sell | 197 | $14.81 | $2.9K | 0 |
| Oct 3, 2024 | White Nicole S | Chief Manufacturing Officer | Sell | 157 | $14.81 | $2.3K | 0 |
| Aug 2, 2024 | Okazaki Jason A | CEO and President | Sell | 981 | $14.23 | $14.0K | 0 |
| Aug 2, 2024 | White Nicole S | Chief Manufacturing Officer | Sell | 785 | $14.23 | $11.2K | 0 |
| May 23, 2024 | Bjorkquist Jeanette M | Principal Accounting Officer | Sell | 24 | $14.93 | $358.41 | 0 |
| May 23, 2024 | McHutchison John G | Director | Sell | 2,117 | $14.93 | $31.6K | 0 |
| May 23, 2024 | Okazaki Jason A | CEO and President | Sell | 549 | $14.93 | $8.2K | 0 |
| May 23, 2024 | White Nicole S | Chief Manufacturing Officer | Sell | 172 | $14.93 | $2.6K | 0 |
| Apr 29, 2024 | Okazaki Jason A | CEO and President | Sell | 1,569 | $12.71 | $19.9K | 0 |
| Apr 29, 2024 | White Nicole S | Chief Manufacturing Officer | Sell | 1,255 | $12.71 | $15.9K | 0 |
| Apr 1, 2024 | McHutchison John G | Director | Sell | 1,206 | $13.07 | $15.8K | 0 |
| Mar 29, 2024 | Bjorkquist Jeanette M | Principal Accounting Officer | Sell | 114 | $13.07 | $1.5K | 0 |
| Mar 29, 2024 | Okazaki Jason A | CEO and President | Sell | 354 | $13.07 | $4.6K | 0 |
| Mar 29, 2024 | White Nicole S | Chief Manufacturing Officer | Sell | 197 | $13.07 | $2.6K | 0 |
| Mar 27, 2024 | Okazaki Jason A | CEO and President | Sell | 392 | $12.87 | $5.0K | 0 |
| Nov 17, 2023 | White Nicole S | Chief Manufacturing Officer | Sell | 477 | $0.69 | $328.65 | 0 |
| Oct 2, 2023 | Okazaki Jason A | CEO and President | Sell | 2,363 | $0.80 | $1.9K | 0 |
| Oct 2, 2023 | White Nicole S | Chief Manufacturing Officer | Sell | 1,891 | $0.80 | $1.5K | 0 |
| Aug 2, 2023 | Delaney William E IV | Chief Scientific Officer | Sell | 9,461 | $1.09 | $10.3K | 0 |
| Aug 2, 2023 | Okazaki Jason A | CEO and President | Sell | 11,827 | $1.09 | $12.9K | 0 |
| Jul 24, 2023 | Bjorkquist Jeanette M | Principal Accounting Officer | Sell | 844 | $1.07 | $900.38 | 0 |
| May 30, 2023 | Delaney William E IV | Chief Scientific Officer | Sell | 4,232 | $0.96 | $4.0K | 0 |
| May 22, 2023 | Bjorkquist Jeanette M | Principal Accounting Officer | Sell | 274 | $1.04 | $285.04 | 0 |
| May 22, 2023 | Delaney William E IV | Chief Scientific Officer | Sell | 6,561 | $1.04 | $6.8K | 0 |
| May 22, 2023 | McHutchison John G | Director | Sell | 25,972 | $1.04 | $27.0K | 0 |
| Mar 30, 2023 | McHutchison John G | Director | Sell | 14,883 | $0.82 | $12.3K | 0 |
| Mar 29, 2023 | Delaney William E IV | Chief Scientific Officer | Sell | 3,421 | $0.82 | $2.8K | 0 |
| Mar 29, 2023 | Okazaki Jason A | CEO and President | Sell | 4,247 | $0.82 | $3.5K | 0 |
| Mar 27, 2023 | Okazaki Jason A | CEO and President | Sell | 4,693 | $1.02 | $4.8K | 0 |
| Feb 16, 2023 | Bjorkquist Jeanette M | Principal Accounting Officer | Sell | 774 | $0.82 | $637.16 | 0 |
| Aug 8, 2022 | McHutchison John G | Chief Executive Officer | Sell | 12,314 | $2.13 | $26.2K | 0 |
| Jul 25, 2022 | Samar Michael P. | Chief Financial Officer | Sell | 2,020 | $2.22 | $4.5K | 0 |
| May 31, 2022 | Delaney William E IV | Chief Scientific Officer | Sell | 4,164 | $1.92 | $8.0K | 0 |
| Mar 29, 2022 | McHutchison John G | CEO and President | Sell | 4,614 | $2.17 | $10.0K | 0 |
| Mar 29, 2022 | Okazaki Jason A | Chief Operating Officer | Sell | 1,269 | $2.17 | $2.8K | 0 |
| Mar 29, 2022 | Samar Michael P. | Chief Financial Officer | Sell | 2,285 | $2.17 | $5.0K | 0 |
ASMB Insiders
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