Company profile
Assembly Biosciences, Inc. Insider Trading
ASMBEvery SEC Form 4 insider trading filing for Assembly Biosciences, Inc. (ASMB) since April 2023 — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?
- Exchange
- Nasdaq
- Sector
- Pharmaceutical Preparations
- CIK
- 0001426800
- Filings
- 88
- Insiders
- 14
- Last filing
- 2026-06-17
Activity summary
No insider transactions in the last 30 days. The most recent was on June 17, 2026, when Bjorkquist Jeanette M sold 29 shares. 88 filings from 14 insiders are on record below.
Three year balance
Buy and sell value by quarter, Q2 23 to Q2 26. Assembly Biosciences, Inc. insiders are net buyers across the period shown.
Bars below the rule are sales, above are purchases. Largest quarter on the chart is $20.7M.
90 day insight
Over the last 90 days, Assembly Biosciences, Inc. insiders bought $0 (6 transactions) and sold $674 (1 transaction).
- Most active insider: Bjorkquist Jeanette M with 1 transaction totaling $674.
- Largest single sale: $674 by Bjorkquist Jeanette M on Jun 17, 2026.
Activity skews bullish — buys outpace sales.
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jun 17, 2026 | Bjorkquist Jeanette M | ASMB | Sale | 29 | $23.25 | $674 |
| Jun 4, 2026 | Mahony Susan | ASMB | Award | 8,000 | — | — |
| Jun 4, 2026 | McHutchison John G | ASMB | Award | 8,000 | — | — |
| Jun 4, 2026 | Johnson-Pratt Lisa | ASMB | Award | 8,000 | — | — |
| Jun 4, 2026 | Altig Anthony E | ASMB | Award | 8,000 | — | — |
45 more transactions hidden
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By total value filed.
Institutional Ownership
Top 13F-HR holders of Assembly Biosciences, Inc. as of 2026-06-30
Data source: quarterly 13F-HR filings — institutional holders report positions within 45 days of quarter end. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →