Company profile
4D Molecular Therapeutics, Inc. Insider Trading
FDMTEvery SEC Form 4 insider trading filing for 4D Molecular Therapeutics, Inc. (FDMT) 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
- Biological Products, (No Diagnostic Substances)
- CIK
- 0001650648
- Filings
- 90
- Insiders
- 39
- Last filing
- 2026-08-19
Activity summary
Recent insider activity is bullish. Over the last 30 days, 4 insiders purchased shares (net $14K). Buying was led by Bizily Scott.
Three year balance
Buy and sell value by quarter, Q4 23 to Q3 26. 4D Molecular Therapeutics, Inc. insiders are net sellers across the period shown.
Bars below the rule are sales, above are purchases. Largest quarter on the chart is $15.8M.
90 day insight
Over the last 90 days, 4D Molecular Therapeutics, Inc. insiders bought $95K (17 transactions) and sold $118K (1 transaction).
- Most active insider: Bizily Scott with 14 transactions totaling $344K.
- Largest single sale: $1.2M by Kirn David on Jun 22, 2026.
- 92% of recent sales were pre-scheduled 10b5-1 trades — typically less informative than open-market activity.
Activity skews bullish — buys outpace sales.
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 19, 2026 | Kirn David | FDMT | Sale10b5 | 25,927 | $16.42 | $426K |
| Aug 19, 2026 | Kirn David | FDMT | Option Exercise10b5 | 50,000 | — | — |
| Aug 19, 2026 | Kirn David | FDMT | Sale10b5 | 43,149 | $15.36 | $663K |
| Aug 19, 2026 | Kirn David | FDMT | Option Exercise10b5 | 50,000 | $4.14 | $207K |
| Aug 17, 2026 | Bizily Scott | FDMT | Option Exercise | 1,635 | — | — |
45 more transactions hidden
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-H "X-Api-Key: $KEY"Top insiders
By total value filed.
Institutional Ownership
Top 13F-HR holders of 4D Molecular Therapeutics, 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 →