SEC Insider Transactions from DOUGLAS RICHARD.

Last updated: 2026-03-20 21:01 UTC | Total transactions: 29

Douglas Richard bought MaxCyte Inc. (MXCT) shares once on the open market in the last year, for a total of $111,040. His most recent purchase was on August 13, 2025. This ranks him 2048th out of nearly 5,000 insiders by purchase value, well below the average of $1.46 million across 3.3 transactions. He made no open market sales in the period.

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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 19, 2026 Aldeyra Therapeutics, Inc. $ALDX DOUGLAS RICHARD Not found P Common Stock 70000 $1.40 195,000.0000 60,162,773 56.00% 0.12%
Aug. 13, 2025 MAXCYTE, INC. $MXCT DOUGLAS RICHARD Not found P Common Stock 80000 $1.39 230,577.0000 106,403,540 53.13% 0.08%
June 20, 2025 NOVAVAX INC $NVAX DOUGLAS RICHARD Director A Stock Option (Right to Buy) 28326 $6.42 28,326.0000 152,190,000 9999.99% 0.02%
June 20, 2025 NOVAVAX INC $NVAX DOUGLAS RICHARD Director A Restricted Stock Units 18884 $0.00 18,884.0000 152,190,000 9999.99% 0.01%
June 18, 2025 MAXCYTE, INC. $MXCT DOUGLAS RICHARD Not found A Common Stock 29210 $0.00 150,577.0000 105,950,480 24.07% 0.03%
June 18, 2025 MAXCYTE, INC. $MXCT DOUGLAS RICHARD Not found A Stock Option (right to buy) 50790 $0.00 50,790.0000 105,950,480 9999.99% 0.05%
June 12, 2025 NOVAVAX INC $NVAX DOUGLAS RICHARD Not found M Restricted Stock Units 10420 $0.00 0.0000 152,190,000 100.00% 0.01%
June 12, 2025 NOVAVAX INC $NVAX DOUGLAS RICHARD Not found M Common Stock 10420 $0.00 54,340.0000 152,190,000 23.72% 0.01%
June 10, 2025 Aldeyra Therapeutics, Inc. $ALDX DOUGLAS RICHARD Not found A Stock Option (Right to Buy) 62728 $0.00 62,728.0000 59,708,654 9999.99% 0.11%
June 10, 2025 Aldeyra Therapeutics, Inc. $ALDX DOUGLAS RICHARD Not found A Stock Option (Right to Buy) 14476 $0.00 14,476.0000 59,708,654 9999.99% 0.02%
June 10, 2025 Aldeyra Therapeutics, Inc. $ALDX DOUGLAS RICHARD Not found A Stock Option (Right to Buy) 1689 $0.00 1,689.0000 59,708,654 9999.99% 0.00%
June 12, 2024 NOVAVAX INC $NVAX DOUGLAS RICHARD Not found M Common Stock 6670 $0.00 43,920.0000 100,768,000 17.91% 0.01%
June 12, 2024 NOVAVAX INC $NVAX DOUGLAS RICHARD Not found M Restricted Stock Units 6670 $0.00 0.0000 100,768,000 100.00% 0.01%
June 12, 2024 NOVAVAX INC $NVAX DOUGLAS RICHARD Not found A Stock Option (Right to Buy) 15630 $15.86 15,630.0000 100,768,000 9999.99% 0.02%
June 12, 2024 NOVAVAX INC $NVAX DOUGLAS RICHARD Not found A Restricted Stock Units 10420 $0.00 10,420.0000 100,768,000 9999.99% 0.01%
June 11, 2024 MAXCYTE, INC. $MXCT DOUGLAS RICHARD Not found A Common Stock 21367 $0.00 121,367.0000 104,089,758 21.37% 0.02%
June 11, 2024 MAXCYTE, INC. $MXCT DOUGLAS RICHARD Not found A Stock Option (right to buy) 40701 $0.00 40,701.0000 104,089,758 9999.99% 0.04%
June 4, 2024 Aldeyra Therapeutics, Inc. $ALDX DOUGLAS RICHARD Not found A Stock Option (Right to Buy) 10418 $0.00 10,418.0000 0 9999.99% 0.00%
June 4, 2024 Aldeyra Therapeutics, Inc. $ALDX DOUGLAS RICHARD Not found A Stock Option (Right to Buy) 1215 $0.00 1,215.0000 0 9999.99% 0.00%
June 4, 2024 Aldeyra Therapeutics, Inc. $ALDX DOUGLAS RICHARD Not found A Stock Option (Right to Buy) 40282 $0.00 40,282.0000 0 9999.99% 0.00%
June 30, 2023 Aldeyra Therapeutics, Inc. $ALDX DOUGLAS RICHARD Not found A Stock Option (Right to Buy) 640 $0.00 640.0000 0 9999.99% 0.00%
June 30, 2023 Aldeyra Therapeutics, Inc. $ALDX DOUGLAS RICHARD Not found A Stock Option (Right to Buy) 21222 $0.00 21,222.0000 0 9999.99% 0.00%
June 30, 2023 Aldeyra Therapeutics, Inc. $ALDX DOUGLAS RICHARD Not found A Stock Option (Right to Buy) 5488 $0.00 5,488.0000 0 9999.99% 0.00%
June 22, 2023 MAXCYTE, INC. $MXCT DOUGLAS RICHARD Director A Stock Option (right to buy) 50000 $0.00 50,000.0000 102,846,036 9999.99% 0.05%
June 10, 2023 NOVAVAX INC $NVAX DOUGLAS RICHARD Director M Common Stock 3100 $0.00 37,250.0000 78,183,000 9.08% 0.00%
June 10, 2023 NOVAVAX INC $NVAX DOUGLAS RICHARD Director M Restricted Stock Units 3100 $0.00 0.0000 78,183,000 100.00% 0.00%
June 12, 2023 NOVAVAX INC $NVAX DOUGLAS RICHARD Director A Stock Option (Right to Buy) 7710 $0.00 7,710.0000 78,183,000 9999.99% 0.01%
June 12, 2023 NOVAVAX INC $NVAX DOUGLAS RICHARD Director A Restricted Stock Units 6670 $0.00 6,670.0000 78,183,000 9999.99% 0.01%
March 29, 2023 MAXCYTE, INC. $MXCT DOUGLAS RICHARD Director P Common Stock 80000 $4.32 100,000.0000 101,702,664 400.00% 0.08%