Prime Medicine, Inc.

PRME

Prime Medicine, Inc. (PRME) has 6 disclosed filings on Paydirt over the past 24 months from 6 corporate insiders: 6 purchases and 0 sales. Filers took a median of 0 days from execution to disclosure, and the most recent trade was executed Aug 1 2025 and filed Aug 5 2025. The most active filer was ARCH Venture Partners X, LLC with 1 filing. Data as of Nov 8 2026.

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Filings, 24m

6 buys · 0 sells

Traders, 24m

6 insiders

Volume, 24miDollar value disclosed in the window

$35.2M

estimated for Congress, as filed for insiders

Median delay

execution to disclosure

Last traded

Aug 1 2025

Filed Aug 5 2025

ADViAverage daily dollar volume

–

not on file

Share price · 12M

$3.11 (-11.8%)

Adjusted for splits and dividends.

Volume by month

Buys $35.2M Sells $0

Estimated for Congress, as filed for insiders · by filing month · past 24 months

Who filed · past 24 months

AL ARCH Venture Partners X, LLC 10% owner 1 filing · 1 buy, 0 sales AL ARCH Venture Partners XII, LLC 10% owner 1 filing · 1 buy, 0 sales GC Gv 2021 Gp, L.L.C. 10% owner 1 filing · 1 buy, 0 sales AL Ann L. Lee Chief Technical Officer 1 filing · 1 buy, 0 sales RN

Robert Nelsen Director 1 filing · 1 buy, 0 sales AR Allan Reine Chief Executive Officer 1 filing · 1 buy, 0 sales

Recent filings

Gv 2021 Gp, L.L.C.PURCHASE 10% owner $5.0M
1,500,000 sh × $3.30
Exec Aug 1 2025
Filed Aug 5 2025 · 4:07 PM ET Robert NelsenPURCHASE Director $10.0M
3,030,300 sh × $3.30
Exec Aug 1 2025
Filed Aug 1 2025 · 7:19 PM ET ARCH Venture Partners XII, LLCPURCHASE 10% owner $10.0M
3,030,300 sh × $3.30
Exec Aug 1 2025
Filed Aug 1 2025 · 7:19 PM ET ARCH Venture Partners X, LLCPURCHASE 10% owner $10.0M
3,030,300 sh × $3.30
Exec Aug 1 2025
Filed Aug 1 2025 · 7:18 PM ET Allan ReinePURCHASE Chief Executive Officer $148K
125,000 sh × $1.18
Exec May 21 2025
Filed May 22 2025 · 5:30 PM ET Ann L. LeePURCHASE Chief Technical Officer $113K
100,000 sh × $1.13
Exec May 21 2025
Filed May 22 2025 · 5:30 PM ET