SEC Insider Transactions from HIGH SUSANNA GATTI.

Last updated: 2026-03-16 13:00 UTC | Total transactions: 41

HIGH SUSANNA GATTI has filed 41 insider transactions across 1 company since March 2023.

Most recent transaction: a sale of 4340 shares of Dyne Therapeutics, Inc. ($DYN) on September 18, 2024.

Activity breakdown: 0 open-market purchases and 27 sales.

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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
Sept. 18, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer S Common Stock 4340 $34.41 136,272.0000 0 3.09% 0.00%
Sept. 18, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer S Common Stock 4636 $34.41 131,636.0000 0 3.40% 0.00%
Sept. 11, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer S Common Stock 2548 $31.89 143,334.0000 0 1.75% 0.00%
Sept. 11, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer S Common Stock 2722 $31.89 140,612.0000 0 1.90% 0.00%
Aug. 19, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer S Common Stock 2582 $45.01 146,210.0000 0 1.74% 0.00%
Aug. 19, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer S Common Stock 328 $46.00 145,882.0000 0 0.22% 0.00%
June 21, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer S Common Stock 29787 $35.01 148,792.0000 0 16.68% 0.00%
June 24, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer M Stock option (right to buy) 10213 $0.00 60,486.0000 0 14.45% 0.00%
June 21, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer M Stock option (right to buy) 29787 $0.00 70,699.0000 0 29.64% 0.00%
June 24, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer S Common Stock 10213 $35.33 148,792.0000 0 6.42% 0.00%
June 24, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer M Common Stock 10213 $5.54 159,005.0000 0 6.86% 0.00%
June 21, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer M Common Stock 29787 $5.54 178,579.0000 0 20.02% 0.00%
June 24, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer M Stock option (right to buy) 10163 $0.00 60,536.0000 0 14.38% 0.00%
June 21, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer M Common Stock 29787 $5.54 178,579.0000 0 20.02% 0.00%
June 21, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer S Common Stock 29787 $35.01 148,792.0000 0 16.68% 0.00%
June 24, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer M Common Stock 10163 $5.54 158,955.0000 0 6.83% 0.00%
June 24, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer S Common Stock 10163 $35.33 148,792.0000 0 6.39% 0.00%
June 21, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer M Stock option (right to buy) 29787 $0.00 70,699.0000 0 29.64% 0.00%
June 12, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer M Stock option (right to buy) 40000 $0.00 100,486.0000 0 28.47% 0.00%
June 12, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer S Common Stock 13964 $33.70 148,792.0000 0 8.58% 0.00%
June 12, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer M Common Stock 40000 $5.54 188,792.0000 0 26.88% 0.00%
June 12, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer S Common Stock 26036 $33.17 162,756.0000 0 13.79% 0.00%
June 10, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer M Common Stock 80000 $5.54 234,062.0000 0 51.93% 0.00%
June 10, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer S Common Stock 80000 $30.24 154,062.0000 0 34.18% 0.00%
June 10, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer M Stock option (right to buy) 80000 $0.00 140,486.0000 0 36.28% 0.00%
June 11, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer S Common Stock 2913 $31.23 148,792.0000 0 1.92% 0.00%
June 11, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer S Common Stock 2357 $31.23 151,705.0000 0 1.53% 0.00%
May 16, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer S Common Stock 489 $28.59 154,062.0000 0 0.32% 0.00%
May 16, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer S Common Stock 2249 $28.20 154,551.0000 0 1.43% 0.00%
March 8, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer S Common Stock 26908 $26.66 159,383.0000 0 14.44% 0.00%
March 11, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer S Common Stock 2292 $25.70 156,800.0000 0 1.44% 0.00%
March 8, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer S Common Stock 291 $27.41 159,092.0000 0 0.18% 0.00%
March 7, 2024 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer S Common Stock 1591 $25.85 186,291.0000 0 0.85% 0.00%
Dec. 11, 2023 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer S Common Stock 1616 $10.72 187,882.0000 0 0.85% 0.00%
Nov. 15, 2023 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer A Stock Option (right to buy) 36952 $0.00 36,952.0000 0 9999.99% 0.00%
Nov. 15, 2023 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer A Common Stock 94893 $0.00 189,498.0000 0 100.30% 0.00%
Nov. 2, 2023 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer S Common Stock 9939 $7.40 94,605.0000 0 9.51% 0.00%
Sept. 18, 2023 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer S Common Stock 2672 $9.41 104,544.0000 0 2.49% 0.00%
Sept. 12, 2023 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer S Common Stock 1635 $10.41 107,216.0000 0 1.50% 0.00%
June 13, 2023 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer S Common Stock 1625 $12.43 108,851.0000 0 1.47% 0.00%
March 14, 2023 Dyne Therapeutics, Inc. $DYN HIGH SUSANNA GATTI Chief Operating Officer S Common Stock 1559 $13.33 110,476.0000 0 1.39% 0.00%