Third Rock Ventures GP V, LP, 10% Owner at Septerna, Inc. (SEPN), bought 18,861 shares at $6.00 ($113K) on 2025-02-24, disclosed to the SEC on 2025-02-26.
Open-market purchase of $113k SEPN by 10% Owner. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history).
Nothing distinguishes this filing.