THIRD ROCK VENTURES V, L.P. purchased 2.5% of their position (147.20K shares) of SEPTERNA, INC. on the open market
Open‑market purchase worth $7.40M — a small addition. The strongest form of insider conviction signal.
P · 2 purchases
Filed: 8/14/2026ACC: 0001193125-26-352692
10% Owner
Since Oct 2024
+147.20K
Net shares
Net buyer
$7.40M
Total acquired
2
Open market trades
2B · 0S
2
Total transactions
147.20K acquired
Non-Derivative Transactions2
Common Stock
Direct
Shares
+147.06K
Price / share
$50.27
Trade value
$7.39M
% of position
2.5%
8/12/2026
5.92M→6.07M
Common Stock
Direct
Shares
+141.00
Price / share
$51.08
Trade value
$7.20K
% of position
0.0%
8/12/2026
6.07M→6.07M
Total
Net shares
+147.20K
Net value
$7.40M
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Common Stock Direct | 8/12/2026 | S · Sale | +147.06K | $50.27 | $7.39M | 2.5% | 5.92M | 6.07M |
| Common Stock Direct | 8/12/2026 | S · Sale | +141.00 | $51.08 | $7.20K | 0.0% | 6.07M | 6.07M |
| Total | +147.20K | $7.40M | ||||||
Derivative Transactions0
No derivative transactions reported
Non-Derivative Holdings (Post-Transaction)1
Common Stock
IndirectShares owned4.21M
Total
4.21M indirect4.21M
| Security Title | Shares Owned | Ownership Type |
|---|---|---|
| Common Stock | 4.21M | Indirect |
| Total | 4.21M | 4.21M indirect |
Derivative Holdings (Post-Transaction)0
No derivative holdings reported