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About Septerna, Inc. (SEPN)
The SEC lists Septerna, Inc. under CIK 0001984086, in pharmaceutical preparations. It is grouped with Health Care companies on this site.
SEPN Form 4 activity by transaction type, last 90 days
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market sale | 8 | 1,671,867 | $72.19M |
| Grant or award | 1 | 275,000 | |
| Option exercise | 10 | 63,334 |
Dollar totals cover purchases and sales only (codes P and S). Grants, option exercises, gifts and tax withholding are counted in shares, because none of them is a trade at a market price.
SEPN insider transactions (Form 4)
8144 Form 4 filings on record, the earliest from Oct 28, 2024, newest first. Filing history page 1 of 2.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Rajiv Patni - Officer | Grant or award | Stock Option (Right to Buy) | 275,000 | $0.00 | - | |
| Daniel D. Long - Officer | Option exercise | Common Stock | 3,333 | $2.76 | $9K | |
| Daniel D. Long - Officer | Open-market sale | Common Stock | 3,333 | $37.83 footnote F2 | $126K | |
| Daniel D. Long - Officer | Option exercise | Stock Option (Right to Buy) | 3,333 | $0.00 | - | |
| ||||||
| Third Rock Ventures V, L.P. - 10% Owner | Open-market sale | Common Stock | 147,059 | $50.27 footnote F2 | $7.39M | |
| Third Rock Ventures V, L.P. - 10% Owner | Open-market sale | Common Stock | 141 | $51.08 footnote F4 | $7K | |
| ||||||
| RA CAPITAL MANAGEMENT, L.P. - Director | Open-market sale | Common Stock | 746,500 | $42.50 | $31.73M | |
| RA CAPITAL MANAGEMENT, L.P. - Director | Open-market sale | Common Stock | 746,500 | $42.50 | $31.73M | |
| Elizabeth Bhatt - Officer | Option exercise | Common Stock | 18,681 | $6.81 | $127K | |
| Elizabeth Bhatt - Officer | Option exercise | Common Stock | 6,319 | $2.76 | $17K | |
| Elizabeth Bhatt - Officer | Open-market sale | Common Stock | 25,000 | $44.00 | $1.10M | |
| Elizabeth Bhatt - Officer | Option exercise | Stock Option (Right to Buy) | 18,681 | $0.00 | - | |
| Elizabeth Bhatt - Officer | Option exercise | Stock Option (Right to Buy) | 6,319 | $0.00 | - | |
| Daniel D. Long - Officer | Option exercise | Common Stock | 1,816 | $2.76 | $5K | |
| Daniel D. Long - Officer | Option exercise | Common Stock | 1,518 | $2.76 | $4K | |
| Daniel D. Long - Officer | Open-market sale | Common Stock | 1,000 | $33.98 footnote F2 | $34K | |
| Daniel D. Long - Officer | Open-market sale | Common Stock | 2,334 | $34.68 footnote F3 | $81K | |
| Daniel D. Long - Officer | Option exercise | Stock Option (Right to Buy) | 1,816 | $0.00 | - | |
| Daniel D. Long - Officer | Option exercise | Stock Option (Right to Buy) | 1,518 | $0.00 | - | |
| ||||||
| Elizabeth Bhatt - Officer | Option exercise | Common Stock | 4,000 | $6.81 | $27K | |
| Elizabeth Bhatt - Officer | Open-market sale | Common Stock | 4,000 | $33.99 footnote F2 | $136K | |
| Elizabeth Bhatt - Officer | Option exercise | Stock Option (Right to Buy) | 4,000 | $0.00 | - | |
| ||||||
| Daniel D. Long - Officer | Option exercise | Common Stock | 3,333 | $2.76 | $9K | |
| Daniel D. Long - Officer | Open-market sale | Common Stock | 2,100 | $34.10 footnote F2 | $72K | |
| Daniel D. Long - Officer | Open-market sale | Common Stock | 1,233 | $34.81 footnote F3 | $43K | |
| Daniel D. Long - Officer | Option exercise | Stock Option (Right to Buy) | 3,333 | $0.00 | - | |
| ||||||
| RA CAPITAL MANAGEMENT, L.P. | Grant or award | Stock Option (Right to Buy) | 15,000 | $0.00 | - | |
| Samira Shaikhly - Officer | Open-market sale | Common Stock | 2,178 | $35.18 | $77K | |
| Samira Shaikhly - Officer | Option exercise | Stock Option (Right to Buy) | 2,178 | $0.00 | - | |
| Samira Shaikhly - Officer | Option exercise | Common Stock | 2,178 | $6.81 | $15K | |
| Abraham Bassan | Grant or award | Stock Option (Right to Buy) | 15,000 | $0.00 | - | |
| Shalini Sharp | Grant or award | Stock Option (Right to Buy) | 15,000 | $0.00 | - | |
| Bernard Coulie | Grant or award | Stock Option (Right to Buy) | 15,000 | $0.00 | - | |
| Jeffrey K. Tong | Grant or award | Stock Option (Right to Buy) | 15,000 | $0.00 | - | |
| Keith Michael Gottesdiener | Grant or award | Stock Option (Right to Buy) | 11,260 | $0.00 | - | |
 Alan Ezekowitz | Grant or award | Stock Option (Right to Buy) | 15,000 | $0.00 | - | |
 Jake Simson | Grant or award | Stock Option (Right to Buy) | 15,000 | $0.00 | - | |
| Daniel D. Long - Officer | Option exercise | Common Stock | 10,529 | $2.76 | $29K | |
| Daniel D. Long - Officer | Open-market sale | Common Stock | 8,000 | $35.10 footnote F3 | $281K | |
| Daniel D. Long - Officer | Open-market sale | Common Stock | 7,000 | $35.97 footnote F4 | $252K | |
| Daniel D. Long - Officer | Option exercise | Stock Option (Right to Buy) | 10,529 | $0.00 | - | |
| Daniel D. Long - Officer | Option exercise | Stock Option (Right to Buy) | 4,471 | $0.00 | - | |
| Daniel D. Long - Officer | Option exercise | Common Stock | 4,471 | $11.70 | $52K | |
| ||||||
| Samira Shaikhly - Officer | Option exercise | Common Stock | 6,250 | $11.70 | $73K | |
| Samira Shaikhly - Officer | Open-market sale | Common Stock | 6,250 | $35.08 footnote F2 | $219K | |
| Samira Shaikhly - Officer | Option exercise | Stock Option (Right to Buy) | 6,250 | $0.00 | - | |
| ||||||
| Samira Shaikhly - Officer | Option exercise | Common Stock | 4,355 | $1.55 | $7K | |
| Samira Shaikhly - Officer | Option exercise | Common Stock | 943 | $2.76 | $3K | |
| Samira Shaikhly - Officer | Option exercise | Common Stock | 637 | $2.76 | $2K | |
| Samira Shaikhly - Officer | Open-market sale | Common Stock | 1,700 | $27.78 footnote F2 | $47K | |
| Samira Shaikhly - Officer | Open-market sale | Common Stock | 1,346 | $28.79 footnote F3 | $39K | |
| Samira Shaikhly - Officer | Open-market sale | Common Stock | 2,889 | $29.66 footnote F4 | $86K | |
| Samira Shaikhly - Officer | Option exercise | Stock Option (Right to Buy) | 4,355 | $0.00 | - | |
| Samira Shaikhly - Officer | Option exercise | Stock Option (Right to Buy) | 943 | $0.00 | - | |
| Samira Shaikhly - Officer | Option exercise | Stock Option (Right to Buy) | 637 | $0.00 | - | |
| ||||||
| Samira Shaikhly - Officer | Option exercise | Common Stock | 11,798 | $6.81 | $80K | |
| Samira Shaikhly - Officer | Open-market sale | Common Stock | 11,798 | $30.06 footnote F2 | $355K | |
| Samira Shaikhly - Officer | Option exercise | Stock Option (Right to Buy) | 11,798 | $0.00 | - | |
| ||||||
| Elizabeth Bhatt - Officer | Option exercise | Common Stock | 4,000 | $6.81 | $27K | |
| Elizabeth Bhatt - Officer | Open-market sale | Common Stock | 2,573 | $23.76 footnote F2 | $61K | |
| Elizabeth Bhatt - Officer | Open-market sale | Common Stock | 1,101 | $25.24 footnote F3 | $28K | |
| Elizabeth Bhatt - Officer | Open-market sale | Common Stock | 326 | $25.86 footnote F4 | $8K | |
| Elizabeth Bhatt - Officer | Option exercise | Stock Option (Right to Buy) | 4,000 | $0.00 | - | |
| ||||||
| Samira Shaikhly - Officer | Option exercise | Stock Option (Right to Buy) | 53,714 | $0.00 | - | |
| Samira Shaikhly - Officer | Option exercise | Stock Option (Right to Buy) | 11,638 | $0.00 | - | |
| Samira Shaikhly - Officer | Option exercise | Stock Option (Right to Buy) | 5,101 | $0.00 | - | |
| Samira Shaikhly - Officer | Option exercise | Common Stock | 11,638 | $2.76 | $32K | |
| Samira Shaikhly - Officer | Option exercise | Common Stock | 5,101 | $2.76 | $14K | |
| Samira Shaikhly - Officer | Option exercise | Common Stock | 53,714 | $1.55 | $83K | |
| Samira Shaikhly - Officer | Open-market sale | Common Stock | 4,090 | $27.51 footnote F3 | $112K | |
| Samira Shaikhly - Officer | Open-market sale | Common Stock | 66,363 | $28.14 footnote F4 | $1.87M | |
| ||||||
| Elizabeth Bhatt - Officer | Option exercise | Common Stock | 4,000 | $6.81 | $27K | |
| Elizabeth Bhatt - Officer | Open-market sale | Common Stock | 2,200 | $28.46 footnote F2 | $63K | |
| Elizabeth Bhatt - Officer | Open-market sale | Common Stock | 1,800 | $29.58 footnote F3 | $53K | |
| Elizabeth Bhatt - Officer | Option exercise | Stock Option (Right to Buy) | 4,000 | $0.00 | - | |
| ||||||
| Daniel D. Long - Officer | Grant or award | Stock Option (Right to Buy) | 80,000 | $0.00 | - | |
| Uwe Klein - Officer | Grant or award | Stock Option (Right to Buy) | 80,000 | $0.00 | - | |
| Samira Shaikhly - Officer | Grant or award | Stock Option (Right to Buy) | 80,000 | $0.00 | - | |
| Gil M. Labrucherie - Officer | Grant or award | Stock Option (Right to Buy) | 125,000 | $0.00 | - | |
| Jae B. Kim - Officer | Grant or award | Stock Option (Right to Buy) | 125,000 | $0.00 | - | |
| Elizabeth Bhatt - Officer | Grant or award | Stock Option (Right to Buy) | 155,000 | $0.00 | - | |
Item 7.01, 8.01, 9.01
Item 2.02, 9.01
Item 5.07
Item 2.02, 9.01
Recent SEPN Form 144 notices of proposed sale
3An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| DANIEL LONG | Officer | 10,001 | $391K | View on EDGAR | |
| SAMIRA SHAIKHLY | Officer | 12,592 |
SEPN insider trading FAQ
What is the latest insider trade for SEPN?
Septerna, Inc. (SEPN) had 6 insider filings in the last 90 days, with the most recent on 2026-09-10. The full record for SEPN runs to 44 Form 4 filings, the earliest from 2024-10-28. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying SEPN stock?
No insider purchases of SEPN were filed in the last 90 days. 4 purchases are on record for this company.
How many insiders are selling SEPN stock?
8 insider sales of SEPN were filed in the last 90 days, totaling $72.19M.
Where can I see SEPN SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects SEPN Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
More Health Care companies with insider activity
Recent insider filings
10The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.
- - Rajiv Patni view on EDGAR
- - Daniel D. Long view on EDGAR
- - Third Rock Ventures V, L.P. view on EDGAR
- - RA CAPITAL MANAGEMENT, L.P. view on EDGAR
- - Elizabeth Bhatt view on EDGAR
- - Daniel D. Long view on EDGAR
- - Elizabeth Bhatt view on EDGAR
- - Daniel D. Long view on EDGAR
- - RA CAPITAL MANAGEMENT, L.P. view on EDGAR
Related companies with recent insider activity
Learn more
- Insider selling: signal or noise?
- Why most insider sales are routine, and the few patterns worth a second look.
- Form 144 vs Form 4
- A Form 144 announces a planned sale; the Form 4 reports it after it happens.
- Insider activity in Health Care
- Where SEPN's peers are being bought and sold.
- Every recent Form 4
- The market-wide feed, updated as filings arrive from SEC EDGAR.
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