MaxCyte, Inc. (MXCT) has 20 known insider and institutional holders on record. The largest holder is Casdin Eli with 10,000,000 shares. Other notable holders include Casdin Partners Master Fund, L.P. and Sumen Cenk.
Over the last 12 months, insiders have made 16 transactions in MXCT stock — 14 buys (valued at $1.02M) and 2 sells (valued at $30.64K). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
MXCT Insider Ownership
Top Holder
Casdin Eli
10,000,000 shares
Buys (12 mo)
14
$1.02M value
Sells (12 mo)
2
$30.64K value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Casdin Eli |
Director |
10,000,000 |
2022-10-05 |
|
| 2 |
Casdin Partners Master Fund, L.p. |
10 Percent Owner |
10,000,000 |
2022-10-05 |
|
| 3 |
Sumen Cenk |
Chief Scientific Officer |
500,000 |
2023-03-21 |
|
| 4 |
Masoud Maher |
President and CEO |
475,000 |
2026-03-31 |
|
| 5 |
Erck Stanley C |
Director |
398,328 |
2025-08-13 |
|
| 6 |
Douglas Richard |
Director |
230,577 |
2025-08-13 |
|
| 7 |
Doerfler Douglas |
President and CEO |
184,522 |
2023-12-06 |
|
| 8 |
Swirsky Douglas J |
Chief Financial Officer |
151,669 |
2026-03-19 |
|
| 9 |
Brooke William W |
Director |
150,879 |
2025-08-13 |
|
| 10 |
Murphy Amanda Louise |
Chief Financial Officer |
142,000 |
2022-03-29 |
|
| 11 |
Holtz Ron |
Chief Financial Officer |
120,000 |
2023-03-21 |
|
| 12 |
Sandoval David I. |
General Counsel |
64,219 |
2025-03-20 |
|
| 13 |
Soleymannezhad Ali |
Chief Commercial Officer |
59,439 |
2025-03-20 |
|
| 14 |
Johnston John Joseph |
Director |
50,790 |
2025-06-23 |
|
| 15 |
Collins Cynthia |
Director |
50,790 |
2025-06-23 |
|
| 16 |
Al-wakeel Yasir B. |
Director |
50,577 |
2025-06-23 |
|
| 17 |
Balthrop Patrick J |
Director |
50,577 |
2025-06-23 |
|
| 18 |
Mandell Art |
Director |
40,701 |
2024-06-13 |
|
| 19 |
Hemrajani Rekha |
Director |
39,893 |
2025-08-27 |
|
| 20 |
Ross Thomas M. |
EVP, Global Sales |
17,858 |
2024-08-05 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-03-27 |
Masoud Maher |
President and CEO |
RSU Award |
300,000 |
- |
- |
| 2026-03-17 |
Swirsky Douglas J |
Chief Financial Officer |
Informative Sell |
10,142 |
$0.82 |
$8.27K |
| 2025-06-25 |
Hemrajani Rekha |
Director |
Informative Sell |
10,684 |
$2.09 |
$22.38K |
| 2025-08-13 |
Masoud Maher |
President and CEO |
Informative Buy |
75,000 |
$1.37 |
$102.92K |
| 2025-08-13 |
Brooke William W |
Director |
Informative Buy |
50,000 |
$1.29 |
$64.5K |
| 2025-08-13 |
Swirsky Douglas J |
Chief Financial Officer |
Informative Buy |
50,000 |
$1.29 |
$64.5K |
| 2025-08-13 |
Erck Stanley C |
Director |
Informative Buy |
100,000 |
$1.37 |
$137.22K |
| 2025-08-13 |
Douglas Richard |
Director |
Informative Buy |
80,000 |
$1.39 |
$111.04K |
| 2025-06-18 |
Johnston John Joseph |
Director |
RSU Award |
50,790 |
$2.11 |
$107.17K |
| 2025-06-18 |
Hemrajani Rekha |
Director |
RSU Award |
29,210 |
- |
- |
| 2025-06-18 |
Al-wakeel Yasir B. |
Director |
RSU Award |
29,210 |
- |
- |
| 2025-06-18 |
Brooke William W |
Director |
RSU Award |
50,790 |
$2.11 |
$107.17K |
| 2025-06-18 |
Collins Cynthia |
Director |
RSU Award |
50,790 |
$2.11 |
$107.17K |
| 2025-06-18 |
Erck Stanley C |
Director |
RSU Award |
50,790 |
$2.11 |
$107.17K |
| 2025-06-18 |
Balthrop Patrick J |
Director |
RSU Award |
29,210 |
- |
- |
| 2025-06-18 |
Douglas Richard |
Director |
RSU Award |
50,790 |
$2.11 |
$107.17K |
