ASSEMBLY BIOSCIENCES (ASMB) stock: insider trades, news & valuation
Net sellingShare price and insider trades
ASSEMBLY BIOSCIENCES insider trading at a glance (Oct 9, 2026): in the past 12 months, 0 insiders bought $0 and 2 sold $15K of ASMB stock on the open market.
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ASMB insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | — | 0 | — | 0 |
| Q2 2026 | — | 0 | $674 | 1 |
| Q1 2026 | — | 0 | $14K | 4 |
Valuation, profit and volume
Summary
Over the past 12 months, 0 ASSEMBLY BIOSCIENCES, INC. insiders reported open-market purchases totaling $0, while 2 insiders reported sales totaling $15K. 0 of 5 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
ASMB earnings: how the stock reacted
Each quarterly results release (SEC 8-K Item 2.02), the trend before it, insider trades in the 30 days before, and the 2-day market reaction. “E” marks releases on the chart above.
| Release | 15 days before | Insiders, 30 days before | Reaction (2 days) | Next 30 days |
|---|---|---|---|---|
| Aug 14, 2026 | +19.3% | None | +0.2%S&P -0.7% | -15.1% |
| May 7, 2026 | +16.4% | None | -5.2%S&P +0.5% | -23.0% |
| Mar 19, 2026 | -4.4% | None | +3.4%S&P -1.7% | +2.7% |
| Nov 10, 2025 | +13.5% | None | +6.2%S&P +1.8% | +8.3% |
| Aug 6, 2025 | +3.3% | None | +12.5%S&P +0.7% | +12.3% |
| May 8, 2025 | +23.2% | None | -1.4%S&P +0.6% | +32.7% |
| Mar 20, 2025 | -9.2% | None | +1.5%S&P -0.3% | -8.9% |
| Nov 7, 2024 | -0.8% | None | +0.8%S&P +1.2% | -4.4% |
Most companies bar insiders from trading in the weeks before results, so pre-earnings purchases are rare and often made by directors or under pre-set plans. Past reactions don't predict future ones.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Jun 18SEC | Jeanette M BjorkquistPfo And Pao | Sell | 2914,560 held (−0%) | $23.25 | $674 | +1.2% | — |
| Mar 31SEC | Jeanette M BjorkquistPfo And Pao | Sell | 31211,105 held (−3%) | $26.65 | $8K | -11.7% | — |
| Mar 31SEC | Nicole S WhiteChief Manufacturing Officer | Sell | 18837,486 held (−0%) | $26.65 | $5K | -11.7% | — |
| Mar 31SEC | Jeanette M BjorkquistPfo And Pao | Sell | 1611,089 held (−0%) | $27.49 | $440 | -14.4% | — |
| Mar 31SEC | Nicole S WhiteChief Manufacturing Officer | Sell | 937,477 held (−0%) | $27.49 | $247 | -14.4% | — |
| Oct 3SEC | Gilead Sciences, Inc.10% Owner | Buy | 2,295,9204,505,391 held (+104%) | — | $0 | — | — |
Insiders at ASSEMBLY BIOSCIENCES, INC.
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Jeanette M BjorkquistPfo And Pao | — | $9K | Jun 18, 2026 | — |
| Nicole S WhiteChief Manufacturing Officer | — | $5K | Mar 31, 2026 | — |
| Gilead Sciences, Inc.10% Owner | — | — | Oct 3, 2025 | — |
ASMB stock: common questions
Are ASSEMBLY BIOSCIENCES, INC. insiders buying ASMB stock?
In the past 12 months, 0 insiders reported open-market purchases of ASMB worth $0. The latest was 10% Owner Gilead Sciences, Inc. bought $0 of ASMB — raises the stake by 104%.
Are ASSEMBLY BIOSCIENCES, INC. insiders selling ASMB stock?
2 insiders reported sales worth $15K over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is ASMB's 52-week range?
Over the past year ASMB has traded between $22.18 and $38.50. It last closed at $23.53 on Oct 9, 2026.