Insider trading activities (stock purchases, sales, and option exercises) reported by insiders of Prime Medicine, Inc. (PRME) since 2022 are shown in Table 1 and Table 2. Table 1 shows the monthly insider trading data of Prime Medicine, Inc.. Table 2 shows the detailed insider transactions. This company's CIK number is 1894562.
Total stock buying since 2022: $142,963,338.
Total stock sales since 2022: $21,793,793.
Total stock option exercises since 2022: $0.
| Insider Buying | Insider Sales | Option Exercises | ||||
|---|---|---|---|---|---|---|
| Year | Shares | Value | Shares | Value | Shares | Value |
| 2025 | 10,898,900 | $35,363,338 | 0 | $0 | 0 | $0 |
| 2024 | 9,600,000 | $60,000,000 | 0 | $0 | 0 | $0 |
| 2023 | 0 | $0 | 1,545,902 | $21,793,793 | 0 | $0 |
| 2022 | 2,800,000 | $47,600,000 | 0 | $0 | 0 | $0 |
| Trading Period | Insider Buying | Insider Sales | Option Exercises | |||
|---|---|---|---|---|---|---|
| year-month | Shares | Value | Shares | Value | Shares | Value |
| 2025-08 | 10,590,900 | $34,949,970 | 0 | $0 | 0 | $0 |
| 2025-06 | 63,000 | $129,444 | 0 | $0 | 0 | $0 |
| 2025-05 | 245,000 | $283,924 | 0 | $0 | 0 | $0 |
| 2024-02 | 9,600,000 | $60,000,000 | 0 | $0 | 0 | $0 |
| 2023-06 | 0 | $0 | 426,440 | $6,454,700 | 0 | $0 |
| 2023-05 | 0 | $0 | 1,119,462 | $15,339,093 | 0 | $0 |
| 2022-10 | 2,800,000 | $47,600,000 | 0 | $0 | 0 | $0 |
| Trade Date | Insider Name | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2025-08-01 | Arch Venture Fund Xii, L.p. (10% Owner) | Buy | 3,030,300 | 3.30 | 9,999,990 |
| 2025-08-01 | Alphabet Inc. | Buy | 1,500,000 | 3.30 | 4,950,000 |
| 2025-08-01 | Gillis Steven (10% Owner) | Buy | 3,030,300 | 3.30 | 9,999,990 |
| 2025-08-01 | Nelsen Robert (Director) | Buy | 3,030,300 | 3.30 | 9,999,990 |
| 2025-06-30 | Liu David R. (10% Owner) | Buy | 21,000 | 2.52 | 52,836 |
| 2025-06-23 | Liu David R. (10% Owner) | Buy | 21,000 | 2.16 | 45,402 |
| 2025-06-16 | Liu David R. (10% Owner) | Buy | 21,000 | 1.49 | 31,206 |
| 2025-05-21 | Lee Ann L. (Chief Technical Officer) | Buy | 100,000 | 1.13 | 112,999 |
| 2025-05-21 | Reine Allan (Chief Executive Officer) | Buy | 125,000 | 1.18 | 147,125 |
| 2025-05-20 | Brudnick Richard (Chief Business Officer) | Buy | 20,000 | 1.19 | 23,800 |
| 2024-02-15 | Arch Venture Fund Xii, L.p. (10% Owner) | Buy | 3,200,000 | 6.25 | 20,000,000 |
| 2024-02-15 | Gillis Steven (10% Owner) | Buy | 3,200,000 | 6.25 | 20,000,000 |
| 2024-02-15 | Nelsen Robert (Director) | Buy | 3,200,000 | 6.25 | 20,000,000 |
| 2023-06-21 | Alphabet Inc. (10% Owner) | Sale | 19,003 | 14.97 | 284,493 |
| 2023-06-20 | Alphabet Inc. (10% Owner) | Sale | 37,405 | 15.06 | 563,244 |
| 2023-06-16 | Alphabet Inc. (10% Owner) | Sale | 6,532 | 15.02 | 98,110 |
| 2023-06-15 | Alphabet Inc. (10% Owner) | Sale | 66,659 | 14.92 | 994,352 |
| 2023-06-14 | Alphabet Inc. (10% Owner) | Sale | 28,960 | 14.87 | 430,693 |
| 2023-06-13 | Alphabet Inc. (10% Owner) | Sale | 28,100 | 15.13 | 425,096 |
| 2023-06-12 | Alphabet Inc. (10% Owner) | Sale | 16,031 | 14.98 | 240,144 |
| 2023-06-09 | Alphabet Inc. (10% Owner) | Sale | 15,672 | 14.48 | 226,977 |
| 2023-06-08 | Alphabet Inc. (10% Owner) | Sale | 5,000 | 15.74 | 78,685 |
| 2023-06-07 | Alphabet Inc. (10% Owner) | Sale | 15,000 | 16.93 | 253,875 |
| 2023-06-06 | Alphabet Inc. (10% Owner) | Sale | 29,975 | 17.02 | 510,174 |
| 2023-06-05 | Alphabet Inc. (10% Owner) | Sale | 22,434 | 16.70 | 374,602 |
| 2023-06-01 | Alphabet Inc. (10% Owner) | Sale | 90,446 | 14.55 | 1,316,170 |
| 2023-05-31 | Alphabet Inc. (10% Owner) | Sale | 33,266 | 13.65 | 454,014 |
| 2023-05-30 | Alphabet Inc. (10% Owner) | Sale | 16,805 | 13.70 | 230,245 |
| 2023-05-26 | Alphabet Inc. (10% Owner) | Sale | 12,602 | 13.70 | 172,609 |
| 2023-05-25 | Alphabet Inc. (10% Owner) | Sale | 23,161 | 13.38 | 309,963 |
| 2023-05-24 | Alphabet Inc. (10% Owner) | Sale | 7,900 | 13.66 | 107,921 |
| 2023-05-23 | Alphabet Inc. (10% Owner) | Sale | 43,939 | 14.74 | 647,660 |
| 2023-05-22 | Alphabet Inc. (10% Owner) | Sale | 87,922 | 14.13 | 1,242,074 |
| 2023-05-19 | Alphabet Inc. (10% Owner) | Sale | 63,212 | 13.88 | 877,066 |
| 2023-05-18 | Alphabet Inc. (10% Owner) | Sale | 27,098 | 13.04 | 353,249 |
| 2023-05-17 | Alphabet Inc. (10% Owner) | Sale | 15,000 | 12.77 | 191,595 |
| 2023-05-16 | Alphabet Inc. (10% Owner) | Sale | 50,649 | 12.59 | 637,670 |
| 2023-05-15 | Alphabet Inc. (10% Owner) | Sale | 157,952 | 12.74 | 2,012,150 |
| 2023-05-12 | Alphabet Inc. (10% Owner) | Sale | 27,290 | 12.72 | 347,210 |
| 2023-05-11 | Alphabet Inc. (10% Owner) | Sale | 26,626 | 13.39 | 356,415 |
| 2023-05-10 | Alphabet Inc. (10% Owner) | Sale | 87,397 | 14.03 | 1,225,830 |
| 2023-05-09 | Alphabet Inc. (10% Owner) | Sale | 321,238 | 14.08 | 4,522,709 |
| 2023-05-08 | Alphabet Inc. (10% Owner) | Sale | 100,772 | 14.13 | 1,423,706 |
| 2022-10-24 | Cahill Thomas | Buy | 400,000 | 17.00 | 6,800,000 |
| 2022-10-24 | Alphabet Inc. | Buy | 800,000 | 17.00 | 13,600,000 |
| 2022-10-24 | Gillis Steven | Buy | 800,000 | 17.00 | 13,600,000 |
| 2022-10-24 | Nelsen Robert | Buy | 800,000 | 17.00 | 13,600,000 |
Insider trading activities including stock purchases, stock sales, and option exercises of PRME listed in the above tables cannot be completely guaranteed as to their accuracy. For more insider trading information of Prime Medicine, Inc. (symbol PRME, CIK number 1894562) see the Securities and Exchange Commission (SEC) website.