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 |
|---|---|---|---|---|---|---|---|
| Swirsky Douglas J | CHIEF FINANCIAL OFFICER | Purchase | 50,000 | $1.29 | $64,500 | 161,811 | Aug 13, 2025 |
| Masoud Maher | President and CEO | Purchase | 75,000 | $1.37 | $102,750 | 175,000 | Aug 13, 2025 |
| Erck Stanley C | — | Purchase | 100,000 | $1.37 | $137,000 | 398,328 | Aug 13, 2025 |
| DOUGLAS RICHARD | — | Purchase | 80,000 | $1.39 | $111,200 | 230,577 | Aug 13, 2025 |
| Brooke William W | — | Purchase | 50,000 | $1.29 | $64,500 | 150,879 | Aug 13, 2025 |
| Hemrajani Rekha | — | Sale | 10,684 | $2.09 | $22,330 | 39,893 | Jun 25, 2025 |
| Johnston John Joseph | — | Award / Grant | 29,210 | — | — | 171,160 | Jun 18, 2025 |
| Hemrajani Rekha | — | Award / Grant | 29,210 | — | — | 50,577 | Jun 18, 2025 |
| Erck Stanley C | — | Award / Grant | 29,210 | — | — | 298,328 | Jun 18, 2025 |
| DOUGLAS RICHARD | — | Award / Grant | 29,210 | — | — | 150,577 | Jun 18, 2025 |
| Collins Cynthia | — | Award / Grant | 29,210 | — | — | 80,889 | Jun 18, 2025 |
| Brooke William W | — | Award / Grant | 29,210 | — | — | 100,879 | Jun 18, 2025 |
| BALTHROP PATRICK J | — | Award / Grant | 29,210 | — | — | 50,577 | Jun 18, 2025 |
| Al-Wakeel Yasir B. | — | Award / Grant | 29,210 | — | — | 50,577 | Jun 18, 2025 |
| Soleymannezhad Ali | Chief Commercial Officer | Sale | 1,211 | $3.18 | $3,851 | 59,439 | Mar 18, 2025 |
| Sandoval David I. | GENERAL COUNSEL | Sale | 353 | $3.18 | $1,123 | 64,219 | Mar 18, 2025 |
| Swirsky Douglas J | CHIEF FINANCIAL OFFICER | Sale | 6,939 | $3.18 | $22,066 | 111,811 | Mar 18, 2025 |
| Soleymannezhad Ali | Chief Commercial Officer | Award / Grant | 34,625 | — | — | 60,650 | Mar 14, 2025 |
| Sandoval David I. | GENERAL COUNSEL | Award / Grant | 23,125 | — | — | 64,572 | Mar 14, 2025 |
| Swirsky Douglas J | CHIEF FINANCIAL OFFICER | Award / Grant | 37,500 | — | — | 118,750 | Mar 14, 2025 |
| Johnston John Joseph | — | Option Exercise | 3,000 | $2.93 | $8,790 | 144,950 | Jan 27, 2025 |
| Sandoval David I. | GENERAL COUNSEL | Sale | 4,466 | $4.54 | $20,276 | 41,447 | Jan 13, 2025 |
| Johnston John Joseph | — | Sale | 3,000 | $4.01 | $12,030 | 141,950 | Dec 26, 2024 |
| Johnston John Joseph | — | Sale | 505 | $3.70 | $1,869 | 141,950 | Dec 9, 2024 |
| Erck Stanley C | — | Sale | 47,689 | $3.72 | $177,403 | 269,118 | Nov 1, 2024 |
| Johnston John Joseph | — | Option Exercise | 3,000 | $2.93 | $8,790 | 144,950 | Oct 28, 2024 |
| Collins Cynthia | — | Award / Grant | 51,679 | — | — | 51,679 | Oct 14, 2024 |
| Erck Stanley C | — | Sale | 21,607 | $3.71 | $80,162 | 269,118 | Oct 1, 2024 |
| Johnston John Joseph | — | Option Exercise | 3,000 | $2.93 | $8,790 | 144,950 | Sep 26, 2024 |
| Soleymannezhad Ali | Chief Commercial Officer | Award / Grant | 10,400 | — | — | 26,025 | Sep 16, 2024 |
| Erck Stanley C | — | Sale | 29,767 | $3.97 | $118,175 | 269,118 | Sep 3, 2024 |
| Johnston John Joseph | — | Sale | 3,000 | $4.28 | $12,840 | 141,950 | Aug 26, 2024 |
| Ross Thomas M. | EVP, GLOBAL SALES | Sale | 15,476 | $4.54 | $70,261 | 25,000 | Aug 1, 2024 |
| Johnston John Joseph | — | Sale | 3,000 | $4.75 | $14,250 | 141,950 | Jul 26, 2024 |
| Ross Thomas M. | EVP, GLOBAL SALES | Option Exercise | 13,531 | $1.64 | $22,191 | 38,531 | Jul 9, 2024 |
| Johnston John Joseph | — | Sale | 10,000 | $3.99 | $39,900 | 141,950 | Jun 27, 2024 |
| Ross Thomas M. | EVP, GLOBAL SALES | Option Exercise | 33,333 | $1.64 | $54,666 | 58,333 | Jun 20, 2024 |
| Mandell Art | — | Award / Grant | 21,367 | — | — | 395,851 | Jun 11, 2024 |
| DOUGLAS RICHARD | — | Award / Grant | 21,367 | — | — | 121,367 | Jun 11, 2024 |
| Hemrajani Rekha | — | Award / Grant | 21,367 | — | — | 21,367 | Jun 11, 2024 |
| Erck Stanley C | — | Award / Grant | 21,367 | — | — | 269,118 | Jun 11, 2024 |
| Al-Wakeel Yasir B. | — | Award / Grant | 21,367 | — | — | 21,367 | Jun 11, 2024 |
| Johnston John Joseph | — | Award / Grant | 21,367 | — | — | 141,950 | Jun 11, 2024 |
| BALTHROP PATRICK J | — | Award / Grant | 21,367 | — | — | 21,367 | Jun 11, 2024 |
| Brooke William W | — | Award / Grant | 21,367 | — | — | 71,669 | Jun 11, 2024 |
| Masoud Maher | President and CEO | Purchase | 70,443 | $4.90 | $345,171 | 100,000 | Jun 7, 2024 |
| Johnston John Joseph | — | Sale | 5,000 | $4.41 | $22,050 | 120,583 | Mar 26, 2024 |
| Ross Thomas M. | EVP, GLOBAL SALES & MARKETING | Award / Grant | 25,000 | — | — | 25,000 | Mar 15, 2024 |
| Sandoval David I. | GENERAL COUNSEL | Award / Grant | 3,913 | — | — | 45,913 | Mar 15, 2024 |
| Swirsky Douglas J | CHIEF FINANCIAL OFFICER | Award / Grant | 81,250 | — | — | 81,250 | Mar 15, 2024 |