SEC Insider Transactions from Brown Christopher D..

Last updated: 2026-03-14 11:47 UTC | Total transactions: 41

Brown Christopher D. has filed 41 insider transactions across 1 company since February 2023.

Most recent transaction: a option exercise of 10992 shares of 908 Devices Inc. ($MASS) on February 01, 2026.

Activity breakdown: 0 open-market purchases and 13 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
Feb. 1, 2026 908 Devices Inc. $MASS Brown Christopher D. Not found M Restricted Stock Units 10992 $0.00 21,982.0000 36,101,051 33.34% 0.03%
Feb. 1, 2026 908 Devices Inc. $MASS Brown Christopher D. Not found M Restricted Stock Units 7418 $0.00 7,418.0000 36,101,051 50.00% 0.02%
Feb. 1, 2026 908 Devices Inc. $MASS Brown Christopher D. Not found M Restricted Stock Units 5027 $0.00 0.0000 36,101,051 100.00% 0.01%
Feb. 1, 2026 908 Devices Inc. $MASS Brown Christopher D. Not found M Common Stock 10992 $0.00 985,559.0000 36,101,051 1.13% 0.03%
Feb. 1, 2026 908 Devices Inc. $MASS Brown Christopher D. Not found M Common Stock 7418 $0.00 974,567.0000 36,101,051 0.77% 0.02%
Feb. 1, 2026 908 Devices Inc. $MASS Brown Christopher D. Not found M Common Stock 5027 $0.00 967,149.0000 36,101,051 0.52% 0.01%
Feb. 1, 2025 908 Devices Inc. $MASS Brown Christopher D. Chief Product Officer M Restricted Stock Units 5027 $0.00 5,027.0000 34,076,321 50.00% 0.01%
Feb. 1, 2025 908 Devices Inc. $MASS Brown Christopher D. Chief Product Officer M Restricted Stock Units 7418 $0.00 14,836.0000 34,076,321 33.33% 0.02%
Feb. 1, 2025 908 Devices Inc. $MASS Brown Christopher D. Chief Product Officer M Restricted Stock Units 10991 $0.00 32,974.0000 34,076,321 25.00% 0.03%
Feb. 1, 2025 908 Devices Inc. $MASS Brown Christopher D. Chief Product Officer M Common Stock 5027 $0.00 951,480.0000 34,076,321 0.53% 0.01%
Feb. 1, 2025 908 Devices Inc. $MASS Brown Christopher D. Chief Product Officer M Common Stock 7418 $0.00 958,898.0000 34,076,321 0.78% 0.02%
Feb. 1, 2025 908 Devices Inc. $MASS Brown Christopher D. Chief Product Officer M Common Stock 10991 $0.00 969,889.0000 34,076,321 1.15% 0.03%
Feb. 3, 2025 908 Devices Inc. $MASS Brown Christopher D. Chief Product Officer S Common Stock 1667 $2.36 968,222.0000 34,076,321 0.17% 0.00%
Feb. 3, 2025 908 Devices Inc. $MASS Brown Christopher D. Chief Product Officer S Common Stock 2459 $2.34 965,763.0000 34,076,321 0.25% 0.01%
Feb. 3, 2025 908 Devices Inc. $MASS Brown Christopher D. Chief Product Officer S Common Stock 3641 $2.33 962,122.0000 34,076,321 0.38% 0.01%
Dec. 19, 2024 908 Devices Inc. $MASS Brown Christopher D. Chief Product Officer M Common Stock 55131 $1.58 946,453.0000 34,670,638 6.19% 0.16%
Dec. 19, 2024 908 Devices Inc. $MASS Brown Christopher D. Chief Product Officer M Stock Option (Right to Buy) 55131 $0.00 0.0000 34,670,638 100.00% 0.16%
Aug. 7, 2024 908 Devices Inc. $MASS Brown Christopher D. Chief Product Officer M Common Stock 6328 $1.58 891,322.0000 34,061,933 0.72% 0.02%
Aug. 7, 2024 908 Devices Inc. $MASS Brown Christopher D. Chief Product Officer M Stock Option (Right to Buy) 6328 $0.00 55,131.0000 34,061,933 10.30% 0.02%
April 1, 2024 908 Devices Inc. $MASS Brown Christopher D. Chief Product Officer M Common Stock 3600 $1.75 884,994.0000 32,710,894 0.41% 0.01%
April 1, 2024 908 Devices Inc. $MASS Brown Christopher D. Chief Product Officer M Stock Option (Right to Buy) 3600 $0.00 114,318.0000 32,710,894 3.05% 0.01%
March 1, 2024 908 Devices Inc. $MASS Brown Christopher D. Chief Product Officer A Stock Option (option to buy) 60064 $0.00 60,064.0000 32,239,394 9999.99% 0.19%
March 1, 2024 908 Devices Inc. $MASS Brown Christopher D. Chief Product Officer A Restricted Stock Units 43965 $0.00 43,965.0000 32,239,394 9999.99% 0.14%
Feb. 1, 2024 908 Devices Inc. $MASS Brown Christopher D. Chief Product Officer S Common Stock 1599 $6.99 888,752.0000 32,239,394 0.18% 0.00%
Feb. 1, 2024 908 Devices Inc. $MASS Brown Christopher D. Chief Product Officer S Common Stock 2358 $7.02 886,394.0000 32,239,394 0.27% 0.01%
Feb. 1, 2024 908 Devices Inc. $MASS Brown Christopher D. Chief Product Officer M Restricted Stock Units 5028 $0.00 10,054.0000 32,239,394 33.34% 0.02%
Feb. 1, 2024 908 Devices Inc. $MASS Brown Christopher D. Chief Product Officer M Restricted Stock Units 7418 $0.00 22,254.0000 32,239,394 25.00% 0.02%
Feb. 1, 2024 908 Devices Inc. $MASS Brown Christopher D. Chief Product Officer M Common Stock 5028 $0.00 882,933.0000 32,239,394 0.57% 0.02%
Feb. 1, 2024 908 Devices Inc. $MASS Brown Christopher D. Chief Product Officer M Common Stock 7418 $0.00 890,351.0000 32,239,394 0.84% 0.02%
Dec. 19, 2023 908 Devices Inc. $MASS Brown Christopher D. Chief Product Officer S Common Stock 6090 $9.08 891,815.0000 32,345,925 0.68% 0.02%
Dec. 19, 2023 908 Devices Inc. $MASS Brown Christopher D. Chief Product Officer S Common Stock 1305 $9.08 890,510.0000 32,345,925 0.15% 0.00%
Dec. 20, 2023 908 Devices Inc. $MASS Brown Christopher D. Chief Product Officer S Common Stock 5235 $9.10 885,275.0000 32,345,925 0.59% 0.02%
Dec. 21, 2023 908 Devices Inc. $MASS Brown Christopher D. Chief Product Officer S Common Stock 7370 $9.12 877,905.0000 32,345,925 0.83% 0.02%
June 7, 2023 908 Devices Inc. $MASS Brown Christopher D. Chief Product Officer S Common Stock 4470 $10.03 897,905.0000 31,965,799 0.50% 0.01%
May 23, 2023 908 Devices Inc. $MASS Brown Christopher D. Chief Technology Officer S Common Stock, par value $0.001 10000 $10.02 892,375.0000 31,965,799 1.11% 0.03%
March 1, 2023 908 Devices Inc. $MASS Brown Christopher D. Chief Technology Officer A Restricted Stock Unit 29672 $0.00 29,672.0000 31,492,531 9999.99% 0.09%
March 1, 2023 908 Devices Inc. $MASS Brown Christopher D. Chief Technology Officer A Stock Option (option to buy) 45018 $0.00 45,018.0000 31,492,531 9999.99% 0.14%
Feb. 2, 2023 908 Devices Inc. $MASS Brown Christopher D. Chief Technology Officer S Common Stock 10000 $10.03 902,375.0000 31,492,531 1.10% 0.03%
Feb. 1, 2023 908 Devices Inc. $MASS Brown Christopher D. Chief Technology Officer M Restricted Stock Unit 5027 $0.00 15,082.0000 31,492,531 25.00% 0.02%
Feb. 1, 2023 908 Devices Inc. $MASS Brown Christopher D. Chief Technology Officer S Common Stock 1564 $9.17 912,375.0000 31,492,531 0.17% 0.00%
Feb. 1, 2023 908 Devices Inc. $MASS Brown Christopher D. Chief Technology Officer M Common Stock 5027 $0.00 913,939.0000 31,492,531 0.55% 0.02%