An officer's intent to sell ~$3.33M of stock, combined with a recent negative T+20 alpha trajectory for this issuer, suggests caution. Monitor for actual execution on Form 4 and any upcoming pipeline catalysts that may offset selling pressure.
Price Chart
Executive Summary
Jae B. Kim, an officer of Septerna, Inc., filed a Form 144 on June 26, 2026, indicating intent to sell 94,339 shares of common stock, with an approximate market value of $3.33 million based on the filing date. This is a non-urgent intent filing, but the sell size relative to recent insider activity carries negative signal.
Key Facts
- Form 144 filed by officer Jae B. Kim on 2026-06-26 for 94,339 shares of SEPN common stock.
- Estimated market value of proposed sale: approximately $3.33 million ($35.26 per share).
- Prior 30-day insider activity includes 3 sells totaling $547,000, so this filing more than quintuples known insider selling volume.
- Shares to be sold were acquired via employee stock purchase plans (10/31/2025 and 04/30/2026) — not open-market buys.
Financial Impact
Proposed insider sale of ~$3.33M in SEPN stock (0.21% of $1.6B market cap).
Risk Factors
- Insider sale may signal reduced conviction ahead of key clinical or operational milestones.
- If sale executes, near-term technical overhang of ~94k shares could pressure the stock.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 3 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 144 Filing (Primary) | 0001950047-26-006526 |
| Document: 0001950047-26-006526-index.html | 0001950047-26-006526 |
| Document: 0001950047-26-006526.txt | 0001950047-26-006526 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Sep 10, 2026 21d ago | Press Release | $38.51 $38.69 | ▲ +0.47% | ▲ +0.69% | $38.27 (−0.62%) |
Sep 3, 2026 28d ago | 3 | $36.75 $39.55 | ▲ +7.62% | ▲ +8.83% | $38.27 (+4.14%) |
Aug 25, 2026 5w ago | 8-K | $41.30 $37.68 | ▼ −8.77% | ▼ −8.23% | $38.27 (−7.34%) |
Aug 14, 2026 6w ago | Insider Cluster | $44.20 $40.52 | ▲ +8.33% | ▲ +7.14% | $38.27 (+13.42%) |
Aug 14, 2026 6w ago | Insider Cluster | $44.20 $40.52 | ▲ +8.33% | ▲ +7.14% | $38.27 (+13.42%) |
Aug 12, 2026 7w ago | 144 | $45.14 $40.79 | ▲ +9.64% | ▲ +7.67% | $38.27 (+15.22%) |
Aug 12, 2026 7w ago | 144 | $45.14 $40.79 | ▲ +9.64% | ▲ +7.67% | $38.27 (+15.22%) |
Aug 10, 2026 7w ago | 8-K | $47.76 $43.80 | ▼ −8.29% | ▼ −7.89% | $38.27 (−19.87%) |
Aug 10, 2026 7w ago | Press Release | $47.76 $43.80 | ▼ −8.29% | ▼ −7.89% | $38.27 (−19.87%) |
Jul 2, 2026 13w ago | Insider Cluster | $34.00 $37.84 | ▲ +11.29% | ▲ +10.36% | $38.27 (+12.56%) |
US Market Status
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