MAXCYTE, INC. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Johnston John Joseph | — | Option Exercise | 5,000 | $2.14 | $10,700 | 125,583 | Feb 26, 2024 |
| Johnston John Joseph | — | Sale | 5,000 | $5.12 | $25,600 | 120,583 | Jan 26, 2024 |
| Johnston John Joseph | — | Option Exercise | 5,000 | $2.14 | $10,700 | 125,583 | Dec 26, 2023 |
| Doerfler Douglas | President and CEO | Sale | 25,008 | $5.01 | $125,290 | 333,197 | Dec 5, 2023 |
| Doerfler Douglas | President and CEO | Sale | 5,350 | $5.00 | $26,750 | 333,197 | Dec 1, 2023 |
| Johnston John Joseph | — | Option Exercise | 5,000 | $2.14 | $10,700 | 125,583 | Nov 27, 2023 |
| Johnston John Joseph | — | Sale | 10,000 | $3.71 | $37,100 | 120,583 | Nov 14, 2023 |
| Johnston John Joseph | — | Sale | 2,841 | $3.70 | $10,512 | 120,583 | Aug 30, 2023 |
| Johnston John Joseph | — | Sale | 5,000 | $4.75 | $23,750 | 120,583 | Jul 26, 2023 |
| Doerfler Douglas | President and CEO | Sale | 445 | $5.01 | $2,229 | 333,197 | Jul 12, 2023 |
| Johnston John Joseph | — | Option Exercise | 6,817 | $0.98 | $6,681 | 127,400 | Jun 26, 2023 |
| Doerfler Douglas | President and CEO | Option Exercise | 14,968 | $0.04 | $599 | 348,165 | Jun 13, 2023 |
| Doerfler Douglas | President and CEO | Sale | 16,149 | $5.02 | $81,068 | 333,197 | May 3, 2023 |
| Ross Thomas M. | EVP, Global Sales & Marketing | Sale | 5,583 | $5.00 | $27,915 | — | Apr 10, 2023 |
| Doerfler Douglas | President and CEO | Sale | 2,182 | $5.00 | $10,910 | 333,197 | Apr 10, 2023 |
| Doerfler Douglas | President and CEO | Option Exercise | 6,961 | $0.04 | $278 | 340,158 | Apr 6, 2023 |
| Ross Thomas M. | EVP, Global Sales & Marketing | Sale | 27,193 | $5.03 | $136,781 | — | Apr 5, 2023 |
| Ross Thomas M. | EVP, Global Sales & Marketing | Option Exercise | 100 | $2.14 | $214 | 100 | Mar 31, 2023 |
| Doerfler Douglas | President and CEO | Sale | 7,470 | $5.03 | $37,574 | 333,197 | Mar 31, 2023 |
| DOUGLAS RICHARD | — | Purchase | 80,000 | $4.32 | $345,600 | 100,000 | Mar 29, 2023 |
| Ross Thomas M. | EVP, Global Sales & Marketing | Option Exercise | 2,468 | $0.98 | $2,419 | 2,468 | Feb 1, 2023 |
| Doerfler Douglas | President and CEO | Option Exercise | 10,665 | $0.04 | $427 | 343,862 | Feb 1, 2023 |
| Doerfler Douglas | President and CEO | Sale | 10,613 | $5.13 | $54,445 | 333,197 | Jan 4, 2023 |
| Ross Thomas M. | EVP, Global Sales & Marketing | Sale | 9,467 | $5.04 | $47,714 | — | Jan 3, 2023 |
| Ross Thomas M. | EVP, Global Sales & Marketing | Sale | 14,133 | $5.59 | $79,003 | — | Dec 5, 2022 |
| Ross Thomas M. | EVP, Global Sales & Marketing | Option Exercise | 23,429 | $0.84 | $19,680 | 23,429 | Nov 2, 2022 |
| Ross Thomas M. | EVP, Global Sales & Marketing | Sale | 24,851 | $6.45 | $160,289 | — | Oct 10, 2022 |
| Casdin Capital, LLC | — | Sale | 735,786 | $6.15 | $4,525,084 | 10,000,000 | Oct 3, 2022 |
| Casdin Capital, LLC | — | Sale | 3,235,548 | $4.30 | $13,912,856 | 10,735,786 | Jul 1, 2022 |
| DOUGLAS RICHARD | — | Purchase | 20,000 | $11.12 | $222,400 | 20,000 | Nov 22, 2021 |
| Holtz Ron | SVP and CAO | Option Exercise | 21,485 | $0.04 | $859 | 171,736 | Nov 16, 2021 |
| Doerfler Douglas | President and CEO | Option Exercise | 74,890 | $0.04 | $2,996 | 408,087 | Nov 16, 2021 |
| Masoud Maher | EVP and General Counsel | Sale | 18,562 | $12.08 | $224,229 | — | Nov 12, 2021 |
| Murphy Amanda Louise | Chief Financial Officer | Option Exercise | 51,103 | $4.42 | $225,875 | 51,103 | Nov 12, 2021 |
| Ross Thomas M. | EVP, Global Sales | Sale | 51,352 | $12.16 | $624,440 | — | Nov 12, 2021 |
| Casdin Eli | — | Purchase | 1,800,000 | $13.00 | $23,400,000 | 13,971,334 | Jul 30, 2021 |