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Total declarations
Company
▲ Purchases (4 ops.)
▼ Sales (0 ops.)
Latest filing published 01 Jul 2025 for Prime Medicine, Inc., €45k. Read the official filing
Filing timeline
BuySaleDavid R. Liu
Insider track record
Disclosed buys
4
Disclosed sells
0
Signal history
Closed purchases
Market purchases
4
Positive at T+90
100%
Median T+90
+125.6%
Based on 4 purchases whose 90-day window has closed (published at least 91 days ago), the same population our ranking model reads.
Purchases by company
Since each purchase
- +26.1%Entry US$3.07 · Close at T+365 US$3.87
- +26.8%Entry US$2.46 · Close at T+365 US$3.12
- +95.7%Entry US$1.62 · Close at T+365 US$3.16
- +98.6%Entry US$1.46 · Close at T+365 US$2.90
Entry is the close on the day after publication, the first price a reader could act on. Prices in the listing currency. Past moves are not a forecast.
David R. Liu: trading record in brief
David R. Liu discloses dealings in Prime Medicine, Inc. to SEC (Form 4). Over a trading history stretching from 24 October 2022 to 30 June 2025, the count stands at 7 filings.
No open-market sale appears; the market trades are 4 purchases worth €140k. Open-market purchases are the filings investors watch most closely, because the insider pays for the shares out of pocket. Since January 2025: 4 purchases and no sales on the market.
A typical purchase (the median) is worth €34k. Clusters matter here: 2 out of 4 purchases overlapped with buying by a colleague within 30 days. Such overlaps are known as a cluster signal: distinct people reaching the same decision at about the same time. After 4 purchases with a full 90-day history, the hit rate stands at 100% and the median 90-day move at +125.6%. This is a record of the past, not a forecast.
The latest filing, published on 1 July 2025, reports an open-market purchase of €45k in Prime Medicine, Inc. Between a trade and the moment it shows up on SEC (Form 4), the median delay is 2 days. US insiders must file a Form 4 within two business days of a trade. Source: insider filings from SEC (Form 4). Past trades are no guide to future returns.
Companies and markets linked to David R. Liu
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations7 total
21,000 shares@ US$2.515732.0% of flowCommon StockSEC:0001628280-25-033754:0
Canonical exit: 28 Sept 2025 (T+90)
21,000 shares@ US$2.16227.9% of flowCommon StockSEC:0001628280-25-032626:0
Canonical exit: 21 Sept 2025 (T+90)
21,000 shares@ US$1.485519.3% of flowCommon StockSEC:0001628280-25-031637:0
Canonical exit: 14 Sept 2025 (T+90)
21,000 shares@ US$1.599520.8% of flowCommon StockSEC:0001628280-25-031045:0
Canonical exit: 9 Sept 2025 (T+90)
1,000,000 shares0Common StockSEC:0001894562-23-000032:0
1,000,000 shares0Common StockSEC:0001894562-23-000030:0
321,665 sharesCommon StockSEC:0001628280-22-027123:0
7 of 7 declarations
