13D·WATCH Activist + Insider Intelligence Live feed Blog About Pricing
SCHEDULE Filed 2025-08-11 Event 2025-08-07 SEC 0001072613-25-000536 →

ARCH Venture Fund XII, L.P. Prime Medicine, Inc. PRME

Stake: 10.40% Shares: 18,587,036 CUSIP: 74168J101 Class: Common Stock, $0.00001 par value

Item 4 — Purpose of Transaction

Not extracted from this filing — typically because it's an amendment (13D/A) and Item 4 is unchanged from the parent filing. Read the raw SEC filing →

Cross-References

Insider Activity (last 365d)
37 transactions
20 buys · 17 sales · 0 awards/exercises
Issuer Cluster
1 13D/G filings on this issuer
0 other filings besides this one
Filer Track Record
2 filings by this filer
1 other filing in the data moat
Short Interest · settle 2026-07-15
DTC 6.74
33,536,516 shares short · -3.4% vs prior

Institutional Consensus · 2025-12-31

Held by elite portfolio managers
1 holder · $1.91M
Point72 Asset Mgmt

Post-Filing Returns · since 2025-08-07 on PRME

+1 day
0.0%
+5 days
0.0%
+30 days
0.0%
+60 days
0.0%
+90 days
0.0%
+180 days
0.0%

Anchor price 3.99 on closest trading day on/after 2025-08-07. Source: Yahoo Finance daily adj_close (split + dividend adjusted).

Form 4 Insider Transactions · last 365d

DateInsiderRoleTypeSharesPriceValue
2026-04-16 Makhni Svetlana Ni officer Award 800,000 $3.67 $2.94M
2026-02-26 Reine Allan director, officer Award 1,300,000 $4.38 $5.69M
2026-02-23 LEE ANN L. officer Award 375,000 $3.34 $1.25M
2026-02-23 Alenson Carman officer Award 140,000 $3.34 $468K
2025-08-01 LEE ANN L. officer Disposition 180,995 $12.30 $2.23M
2025-08-01 Schenkein David P director Disposition 39,062 $14.83 $579K
2025-08-01 NELSEN ROBERT director, 10%+ owner Disposition 39,062 $14.83 $579K
2025-08-01 Marrazzo Jeffrey D director Disposition 92,000 $14.04 $1.29M
2025-08-01 Kelly Michael Aaron director Disposition 13,510 $10.54 $142K
2025-08-01 Foster-Cheek Kaye I director Disposition 13,510 $10.92 $148K
2025-08-01 Foster-Cheek Kaye I director Award 13,510 $4.04 $55K
2025-08-01 Foster-Cheek Kaye I director Disposition 9,006 $17.00 $153K
2025-08-01 Foster-Cheek Kaye I director Award 9,006 $4.04 $36K
2025-08-01 Foster-Cheek Kaye I director Disposition 39,062 $14.83 $579K
2025-08-01 Foster-Cheek Kaye I director Award 39,062 $4.04 $158K
2025-08-01 Foster-Cheek Kaye I director Disposition 45,000 $7.68 $346K
2025-08-01 Foster-Cheek Kaye I director Award 45,000 $4.04 $182K
2025-08-01 Kelly Michael Aaron director Award 13,510 $4.04 $55K
2025-08-01 Kelly Michael Aaron director Disposition 9,006 $17.00 $153K
2025-08-01 Kelly Michael Aaron director Award 9,006 $4.04 $36K
2025-08-01 Kelly Michael Aaron director Disposition 39,062 $14.83 $579K
2025-08-01 Kelly Michael Aaron director Award 39,062 $4.04 $158K
2025-08-01 Kelly Michael Aaron director Disposition 45,000 $7.68 $346K
2025-08-01 Kelly Michael Aaron director Award 45,000 $4.04 $182K
2025-08-01 Marrazzo Jeffrey D director Award 92,000 $4.04 $372K
Showing 25 of 37

Other Filings by ARCH Venture Fund XII, L.P.

FiledFormIssuerStakeShares
2026-04-01 SCHEDULE 13D/A Neumora Therapeutics, Inc. NMRA 18.70% 33,847,838 view →

Want this depth on every filing the moment it hits SEC EDGAR?

Full feed access · API · daily intelligence brief · custom alerts. From $49/mo.

See pricing →