Company profile
Cullinan Therapeutics, Inc. Insider Trading
CGEMEvery SEC Form 4 insider trading filing for Cullinan Therapeutics, Inc. (CGEM) 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
- 0001789972
- Filings
- 126
- Insiders
- 18
- Last filing
- 2026-09-08
Activity summary
Recent insider activity is bullish. Over the last 30 days, 2 insiders purchased shares (net $17K). Buying was led by Jennifer Michaelson.
Three year balance
Buy and sell value by quarter, Q4 23 to Q3 26. Cullinan Therapeutics, Inc. insiders are net buyers across the period shown.
Bars below the rule are sales, above are purchases. Largest quarter on the chart is $13.3M.
90 day insight
Over the last 90 days, Cullinan Therapeutics, Inc. insiders bought $198K across 8 transactions with no open-market sales.
- Most active insider: Jennifer Michaelson with 9 transactions totaling $1.1M.
- Largest single sale: $608K by Jennifer Michaelson on Aug 13, 2026.
- 100% 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 |
|---|---|---|---|---|---|---|
| Sep 8, 2026 | Jennifer Michaelson | CGEM | Option Exercise | 4,000 | $4.30 | $17K |
| Sep 8, 2026 | Jennifer Michaelson | CGEM | Sale10b5 | 8,000 | $21.57 | $173K |
| Sep 8, 2026 | Jennifer Michaelson | CGEM | Option Exercise | 4,000 | — | — |
| Aug 13, 2026 | Jennifer Michaelson | CGEM | Option Exercise | 30,000 | $4.30 | $129K |
| Aug 13, 2026 | Jennifer Michaelson | CGEM | Sale10b5 | 30,000 | $20.26 | $608K |
45 more transactions hidden
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By total value filed.
Institutional Ownership
Top 13F-HR holders of Cullinan 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 →