Company profile
Septerna, Inc. Insider Trading
SEPNEvery SEC Form 4 insider trading filing for Septerna, Inc. (SEPN) 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
- 0001984086
- Filings
- 58
- Insiders
- 26
- Last filing
- 2026-08-12
Activity summary
Recent insider activity is bullish. Over the last 30 days, 8 insiders purchased shares versus 2 sales. Buying was led by Bhatt Elizabeth.
Three year balance
Buy and sell value by quarter, Q4 24 to Q3 26. Septerna, Inc. insiders are net buyers across the period shown.
Bars below the rule are sales, above are purchases. Largest quarter on the chart is $86.8M.
90 day insight
Over the last 90 days, Septerna, Inc. insiders bought $371K (34 transactions) and sold $63.5M (2 transactions).
- Most active insider: Long Daniel D. with 16 transactions totaling $862K.
- Largest single sale: $31.7M by Ra Capital Management, L.p. on Aug 12, 2026.
- 88% 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 12, 2026 | Third Rock Ventures V, L.P. | SEPN | Sale10b5 | 141 | $51.08 | $7K |
| Aug 12, 2026 | Ra Capital Management, L.p. | SEPN | Sale | 746,500 | $42.50 | $31.73M |
| Aug 12, 2026 | Third Rock Ventures V, L.P. | SEPN | Sale10b5 | 147,059 | $50.27 | $7.39M |
| Aug 12, 2026 | Ra Capital Management, L.p. | SEPN | Sale | 746,500 | $42.50 | $31.73M |
| Aug 11, 2026 | Bhatt Elizabeth | SEPN | Sale10b5 | 25,000 | $44.00 | $1.10M |
45 more transactions hidden
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Query this yourself
The same rows, over the API.
curl "https://api.form4api.com/v1/transactions?ticker=SEPN" \
-H "X-Api-Key: $KEY"Top insiders
By total value filed.
Institutional Ownership
Top 13F-HR holders of Septerna, 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 →