SEC Insider Transactions from Brudnick Richard.

Last updated: 2026-03-14 11:25 UTC | Total transactions: 12

Richard Brudnick, Chief Business Officer, made one open market purchase of Prime Medicine ($PRME) shares in the last year, totaling $23,790, with the most recent on May 20, 2025. This ranks 3,692nd among 4,983 insiders, well below the average of $1.5 million per buyer. He also sold Scholar Rock Holding ($SRRK) shares twice for $180,531 total, most recently on May 29, 2025, ranking 8,648th out of 11,678 insiders versus an average of $8.6 million per seller.

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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
May 29, 2025 Scholar Rock Holding Corp $SRRK Brudnick Richard Not found S Common Stock 4675 $29.63 16,457.0000 111,838,272 22.12% 0.00%
May 29, 2025 Scholar Rock Holding Corp $SRRK Brudnick Richard Not found S Common Stock 1400 $30.00 15,057.0000 111,838,272 8.51% 0.00%
May 22, 2025 Scholar Rock Holding Corp $SRRK Brudnick Richard Director A Stock Option (Right to Buy) 9206 $0.00 9,206.0000 111,838,272 9999.99% 0.01%
May 22, 2025 Scholar Rock Holding Corp $SRRK Brudnick Richard Director A Common Stock 7632 $0.00 21,132.0000 111,838,272 56.53% 0.01%
May 20, 2025 Prime Medicine, Inc. $PRME Brudnick Richard Chief Business Officer P Common Stock 20000 $1.19 20,000.0000 131,160,842 9999.99% 0.02%
Feb. 27, 2025 Prime Medicine, Inc. $PRME Brudnick Richard Chief Business Officer A Stock Option (right to buy) 225000 $0.00 225,000.0000 131,160,842 9999.99% 0.17%
Dec. 5, 2024 Prime Medicine, Inc. $PRME Brudnick Richard Chief Business Officer A Stock Option (right to buy) 19300 $0.00 57,900.0000 0 50.00% 0.00%
June 27, 2024 Scholar Rock Holding Corp $SRRK Brudnick Richard Not found A Common Stock 13500 $0.00 13,500.0000 95,892,601 9999.99% 0.01%
June 27, 2024 Scholar Rock Holding Corp $SRRK Brudnick Richard Not found A Stock Option (Right to Buy) 18000 $0.00 18,000.0000 95,892,601 9999.99% 0.02%
May 17, 2024 Prime Medicine, Inc. $PRME Brudnick Richard Chief Business Officer A Stock Option (right to buy) 19300 $0.00 38,600.0000 0 100.00% 0.00%
Feb. 21, 2024 Prime Medicine, Inc. $PRME Brudnick Richard Chief Business Officer A Stock Option (right to buy) 135747 $0.00 135,747.0000 0 9999.99% 0.00%
March 31, 2023 Prime Medicine, Inc. $PRME Brudnick Richard Chief Business Officer A Stock Option (right to buy) 135747 $0.00 135,747.0000 0 9999.99% 0.00%