Third Rock Ventures GP V, LP insider trades
Third Rock Ventures GP V, LP has filed 3 Form 4s with the SEC that we hold, for Septerna, Inc. (SEPN) (10% owner) and Maze Therapeutics, Inc. (MAZE) (10% owner). Across all of them we count 3 purchases worth $6.3M and 0 sales worth $0 reported on Form 4. None of these purchases or sales is dated in the last 12 months. The largest single trade was a purchase of 612,674 shares of Septerna, Inc. worth $3.6M, dated 2025-02-20. The first filing on our record is dated 2025-02-24 and the latest 2025-11-05.
Septerna, Inc. (SEPN)
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2025-02-20 | P, purchase reported on Form 4 | 612,674 | $3.6M | 2025-02-24 |
| 2025-02-21 | P, purchase reported on Form 4 | 427,668 | $2.5M | 2025-02-24 |
| 2025-02-24 | P, purchase reported on Form 4 | 18,861 | $113.2K | 2025-02-26 |
Maze Therapeutics, Inc. (MAZE)
No purchase or sale of common stock reported here; these filings cover grants, option exercises or other codes.
Counted from the Form 4 filings this reporting owner (SEC CIK 1977498) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.
Source: U.S. Securities and Exchange Commission (EDGAR) and other official
government data · Updated 2026-10-12 ·
For informational purposes only, not investment advice.
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