SEC Insider Transactions from Gaffin David Joseph.

Last updated: 2026-03-14 11:55 UTC | Total transactions: 91

Gaffin David Joseph, EVP and CLO of Alkermes, Inc., sold Alkermes plc ($ALKS) shares on the open market twice in the last 365 days, totaling about $120 thousand. His most recent sale occurred on March 3, 2026. These sales rank 9,311th among 11,678 insiders in our database, where the average is $8.6 million across about 6.4 transactions per insider. Gaffin David Joseph made no open market purchases during this 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 2, 2026 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. S Ordinary Shares 2034 $29.29 237,660.0000 168,510,000 0.85% 0.00%
March 3, 2026 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. S Ordinary Shares 2034 $29.76 235,626.0000 168,510,000 0.86% 0.00%
March 2, 2026 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. A Restricted Stock Unit Award 36364 $0.00 36,364.0000 168,510,000 9999.99% 0.02%
March 2, 2026 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. A Employee Stock Option (Right to Buy) 78292 $0.00 78,292.0000 168,510,000 9999.99% 0.05%
Feb. 26, 2026 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Restricted Stock Unit Award 6866 $0.00 13,732.0000 168,510,000 33.33% 0.00%
Feb. 26, 2026 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Ordinary Shares 6866 $0.00 242,743.0000 168,510,000 2.91% 0.00%
Feb. 26, 2026 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. F Ordinary Shares 3049 $30.73 239,694.0000 168,510,000 1.26% 0.00%
Feb. 23, 2026 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Ordinary Shares 7689 $0.00 239,291.0000 168,510,000 3.32% 0.00%
Feb. 23, 2026 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. F Ordinary Shares 3414 $32.19 235,877.0000 168,510,000 1.43% 0.00%
Feb. 23, 2026 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Restricted Stock Unit Award 7689 $0.00 7,690.0000 168,510,000 50.00% 0.00%
Feb. 18, 2026 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Restricted Stock Unit Award 6355 $0.00 0.0000 168,510,000 100.00% 0.00%
Feb. 19, 2026 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Ordinary Shares 7673 $0.00 235,009.0000 168,510,000 3.38% 0.00%
Feb. 18, 2026 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. F Ordinary Shares 2126 $32.02 227,336.0000 168,510,000 0.93% 0.00%
Feb. 18, 2026 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Ordinary Shares 6355 $0.00 229,462.0000 168,510,000 2.85% 0.00%
Feb. 19, 2026 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Restricted Stock Unit Award 7673 $0.00 23,019.0000 168,510,000 25.00% 0.00%
Feb. 19, 2026 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. F Ordinary Shares 3407 $32.00 231,602.0000 168,510,000 1.45% 0.00%
Feb. 5, 2026 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. F Ordinary Shares 7619 $33.55 223,107.0000 168,510,000 3.30% 0.00%
Feb. 5, 2026 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. A Ordinary Shares 25352 $0.00 230,726.0000 168,510,000 12.34% 0.02%
Aug. 3, 2025 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Ordinary Shares 2014 $0.00 206,269.0000 169,198,000 0.99% 0.00%
Aug. 3, 2025 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Restricted Stock Unit Award 2014 $0.00 2,015.0000 169,198,000 49.99% 0.00%
Aug. 3, 2025 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. F Ordinary Shares 895 $26.55 205,374.0000 169,198,000 0.43% 0.00%
Feb. 26, 2025 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Restricted Stock Unit Award 6866 $0.00 20,598.0000 169,198,000 25.00% 0.00%
Feb. 26, 2025 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Ordinary Shares 6866 $0.00 207,304.0000 169,198,000 3.43% 0.00%
Feb. 26, 2025 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. F Ordinary Shares 3049 $34.80 204,255.0000 169,198,000 1.47% 0.00%
Feb. 23, 2025 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Restricted Stock Unit Award 7689 $0.00 15,379.0000 169,198,000 33.33% 0.00%
Feb. 22, 2025 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Ordinary Shares 7432 $0.00 199,463.0000 169,198,000 3.87% 0.00%
Feb. 22, 2025 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. F Ordinary Shares 3300 $35.32 196,163.0000 169,198,000 1.65% 0.00%
Feb. 23, 2025 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Ordinary Shares 7689 $0.00 203,852.0000 169,198,000 3.92% 0.00%
Feb. 23, 2025 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. F Ordinary Shares 3414 $35.32 200,438.0000 169,198,000 1.67% 0.00%
Feb. 22, 2025 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Restricted Stock Unit Award 7432 $0.00 0.0000 169,198,000 100.00% 0.00%
Feb. 18, 2025 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Ordinary Shares 6354 $0.00 194,853.0000 169,198,000 3.37% 0.00%
Feb. 18, 2025 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. F Ordinary Shares 2822 $35.90 192,031.0000 169,198,000 1.45% 0.00%
Feb. 18, 2025 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Restricted Stock Unit Award 6354 $0.00 6,355.0000 169,198,000 50.00% 0.00%
Feb. 19, 2025 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. A Employee Stock Option (Right to Buy) 63991 $0.00 63,991.0000 169,198,000 9999.99% 0.04%
Feb. 19, 2025 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. A Restricted Stock Unit Award 30692 $0.00 30,692.0000 169,198,000 9999.99% 0.02%
Feb. 6, 2025 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. A Ordinary Shares 32350 $0.00 198,251.0000 169,198,000 19.50% 0.02%
Feb. 6, 2025 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. F Ordinary Shares 9752 $31.39 188,499.0000 169,198,000 4.92% 0.01%
Aug. 3, 2024 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Ordinary Shares 2014 $0.00 166,796.0000 169,730,000 1.22% 0.00%
Aug. 3, 2024 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. F Ordinary Shares 895 $27.72 165,901.0000 169,730,000 0.54% 0.00%
Aug. 3, 2024 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Restricted Stock Unit Award 2014 $0.00 4,029.0000 169,730,000 33.33% 0.00%
Feb. 23, 2024 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Ordinary Shares 7689 $0.00 168,196.0000 169,730,000 4.79% 0.00%
Feb. 23, 2024 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. F Ordinary Shares 3414 $29.57 164,782.0000 169,730,000 2.03% 0.00%
Feb. 23, 2024 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Restricted Stock Unit Award 7689 $0.00 23,068.0000 169,730,000 25.00% 0.00%
Feb. 26, 2024 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. A Employee Stock Option (Right to Buy) 111186 $0.00 111,186.0000 169,730,000 9999.99% 0.07%
Feb. 26, 2024 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. A Restricted Stock Unit Award 27464 $0.00 27,464.0000 169,730,000 9999.99% 0.02%
Feb. 22, 2024 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Ordinary Shares 7431 $0.00 163,807.0000 169,730,000 4.75% 0.00%
Feb. 22, 2024 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. F Ordinary Shares 3300 $28.91 160,507.0000 169,730,000 2.01% 0.00%
Feb. 22, 2024 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Restricted Stock Unit Award 7431 $0.00 7,432.0000 169,730,000 50.00% 0.00%
Feb. 20, 2024 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Ordinary Shares 7177 $0.00 159,370.0000 169,730,000 4.72% 0.00%
Feb. 20, 2024 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. F Ordinary Shares 2994 $30.39 156,376.0000 169,730,000 1.88% 0.00%
Feb. 18, 2024 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Ordinary Shares 6355 $0.00 154,062.0000 169,730,000 4.30% 0.00%
Feb. 18, 2024 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Restricted Stock Unit Award 6355 $0.00 12,709.0000 169,730,000 33.34% 0.00%
Feb. 20, 2024 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Restricted Stock Unit Award 7177 $0.00 0.0000 169,730,000 100.00% 0.00%
Feb. 18, 2024 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. F Ordinary Shares 1869 $32.18 152,193.0000 169,730,000 1.21% 0.00%
Nov. 17, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. J Employee Stock Option (Right to Buy) 2352 $20.03 120,040.0000 163,742,000 2.00% 0.00%
Feb. 8, 2024 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. A Ordinary Shares 28240 $0.00 156,190.0000 169,730,000 22.07% 0.02%
Feb. 8, 2024 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. F Ordinary Shares 8483 $26.77 147,707.0000 169,730,000 5.43% 0.00%
Nov. 17, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. J Employee Stock Option (Right to Buy) 499 $46.24 25,499.0000 163,742,000 2.00% 0.00%
Nov. 17, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. J Employee Stock Option (Right to Buy) 354 $69.83 18,104.0000 163,742,000 1.99% 0.00%
Nov. 17, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. J Employee Stock Option (Right to Buy) 719 $31.64 36,719.0000 163,742,000 2.00% 0.00%
Nov. 17, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. J Employee Stock Option (Right to Buy) 799 $53.50 40,799.0000 163,742,000 2.00% 0.00%
Nov. 17, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. J Employee Stock Option (Right to Buy) 1089 $65.94 55,589.0000 163,742,000 2.00% 0.00%
Nov. 17, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. J Employee Stock Option (Right to Buy) 2133 $31.93 108,833.0000 163,742,000 2.00% 0.00%
Nov. 17, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. J Restricted Stock Unit Award 140 $0.00 7,177.0000 163,742,000 1.99% 0.00%
Nov. 17, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. J Employee Stock Option (Right to Buy) 2378 $19.34 121,303.0000 163,742,000 2.00% 0.00%
Nov. 17, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. J Restricted Stock Unit Award 291 $0.00 14,863.0000 163,742,000 2.00% 0.00%
Nov. 17, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. J Employee Stock Option (Right to Buy) 1992 $24.59 101,674.0000 163,742,000 2.00% 0.00%
Nov. 17, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. J Restricted Stock Unit Award 373 $0.00 19,064.0000 163,742,000 2.00% 0.00%
Nov. 17, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. J Employee Stock Option (Right to Buy) 576 $24.82 29,388.0000 163,742,000 2.00% 0.00%
Nov. 17, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. J Restricted Stock Unit Award 118 $0.00 6,043.0000 163,742,000 1.99% 0.00%
Nov. 17, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. J Employee Stock Option (Right to Buy) 2412 $26.82 123,027.0000 163,742,000 2.00% 0.00%
Nov. 17, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. J Restricted Stock Unit Award 603 $0.00 30,757.0000 163,742,000 2.00% 0.00%
Aug. 3, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Restricted Stock Unit Award 1974 $0.00 5,925.0000 163,742,000 24.99% 0.00%
Aug. 3, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. F Ordinary Shares 877 $27.63 127,950.0000 163,742,000 0.68% 0.00%
Aug. 3, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Ordinary Shares 1974 $0.00 128,827.0000 163,742,000 1.56% 0.00%
Feb. 22, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. F Ordinary Shares 3224 $27.77 126,853.0000 163,742,000 2.48% 0.00%
Feb. 23, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. A Restricted Stock Unit Award 30154 $0.00 30,154.0000 163,742,000 9999.99% 0.02%
Feb. 22, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Ordinary Shares 7286 $0.00 130,077.0000 163,742,000 5.93% 0.00%
Feb. 23, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. A Employee Stock Option (Right to Buy) 120615 $0.00 120,615.0000 163,742,000 9999.99% 0.07%
Feb. 22, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Restricted Stock Unit Award 7286 $0.00 14,572.0000 163,742,000 33.33% 0.00%
Feb. 20, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Ordinary Shares 7036 $0.00 109,087.0000 163,742,000 6.89% 0.00%
Feb. 21, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Restricted Stock Unit Award 6875 $0.00 0.0000 163,742,000 100.00% 0.00%
Feb. 18, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Ordinary Shares 6230 $0.00 103,996.0000 163,742,000 6.37% 0.00%
Feb. 18, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. F Ordinary Shares 1945 $28.07 102,051.0000 163,742,000 1.87% 0.00%
Feb. 20, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Restricted Stock Unit Award 7036 $0.00 7,037.0000 163,742,000 50.00% 0.00%
Feb. 18, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Restricted Stock Unit Award 6230 $0.00 18,691.0000 163,742,000 25.00% 0.00%
Feb. 21, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. F Ordinary Shares 2022 $27.77 122,791.0000 163,742,000 1.62% 0.00%
Feb. 21, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. M Ordinary Shares 6875 $0.00 124,813.0000 163,742,000 5.83% 0.00%
Feb. 20, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. F Ordinary Shares 4548 $28.07 117,938.0000 163,742,000 3.71% 0.00%
Feb. 20, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. A Ordinary Shares 15468 $0.00 122,486.0000 163,742,000 14.45% 0.01%
Feb. 20, 2023 Alkermes plc. $ALKS Gaffin David Joseph EVP, CLO, Alkermes, Inc. F Ordinary Shares 2069 $28.07 107,018.0000 163,742,000 1.90% 0.00%