SEC Insider Transactions from Swirsky Douglas J.

Last updated: 2026-03-19 21:03 UTC | Total transactions: 11

Douglas J. Swirsky, CFO of MaxCyte, Inc. ($MXCT), made one open market purchase of shares worth $64,500 in the last 365 days, most recently on August 13, 2025. This ranks 2,753rd among 4,983 insiders, well below the average of $1.5 million across 3.29 transactions. He also sold shares once for $22,061 on March 18, 2025, ranking 10,989th out of 11,678 insiders, compared to the $8.6 million average over 6.37 transactions.

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Transaction Date Company Ticker Insider Name Title Transaction Type Security Shares Price Shares Owned Following Total Shares Outstanding % of Owned % of Outstanding
March 17, 2026 MAXCYTE, INC. $MXCT Swirsky Douglas J CHIEF FINANCIAL OFFICER S Common Stock 10142 $0.82 151,669.0000 106,613,075 6.27% 0.01%
Aug. 13, 2025 MAXCYTE, INC. $MXCT Swirsky Douglas J CHIEF FINANCIAL OFFICER P Common Stock 50000 $1.29 161,811.0000 106,403,540 44.72% 0.05%
March 18, 2025 MAXCYTE, INC. $MXCT Swirsky Douglas J CHIEF FINANCIAL OFFICER S Common Stock 6939 $3.18 111,811.0000 104,849,222 5.84% 0.01%
March 14, 2025 MAXCYTE, INC. $MXCT Swirsky Douglas J CHIEF FINANCIAL OFFICER A Employee Stock Option (right to buy) 150000 $0.00 150,000.0000 104,849,222 9999.99% 0.14%
March 14, 2025 MAXCYTE, INC. $MXCT Swirsky Douglas J CHIEF FINANCIAL OFFICER A Common Stock 37500 $0.00 118,750.0000 104,849,222 46.15% 0.04%
Feb. 14, 2025 Cellectar Biosciences, Inc. $CLRB Swirsky Douglas J Director A Stock option (right to buy) 90000 $0.00 90,000.0000 1,238,125 9999.99% 7.27%
June 14, 2024 Cellectar Biosciences, Inc. $CLRB Swirsky Douglas J Director A Stock option (right to buy) 90000 $0.00 90,000.0000 29,346,679 9999.99% 0.31%
March 15, 2024 MAXCYTE, INC. $MXCT Swirsky Douglas J CHIEF FINANCIAL OFFICER A Common Stock 81250 $0.00 81,250.0000 103,268,502 9999.99% 0.08%
March 15, 2024 MAXCYTE, INC. $MXCT Swirsky Douglas J CHIEF FINANCIAL OFFICER A Employee Stock Option (right to buy) 225000 $0.00 225,000.0000 103,268,502 9999.99% 0.22%
June 28, 2023 Cellectar Biosciences, Inc. $CLRB Swirsky Douglas J Director A Stock option (right to buy) 37500 $0.00 71,925.0000 11,261,217 108.93% 0.33%
March 27, 2023 MAXCYTE, INC. $MXCT Swirsky Douglas J Chief Financial Officer A Employee Stock Option (right to buy) 350000 $0.00 350,000.0000 101,702,664 9999.99% 0.34%