Christopher D. Brown

MASS

Christopher D. Brown serves as director at 908 Devices Inc. (MASS). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

0 trades

$0.00

Total Sells

30 trades

$7.56M

Net Position

Net Seller

$7.56M

Companies Traded

MASS

Active Period

Jul 2021 – Sep 2026

30 total trades

Most Recent

Sell MASS

Sep 4, 2026 · $317.4K

Christopher D. Brown's Insider Trading at 908 Devices Inc. (MASS)

Buys

0 · $0.00

Sells

30 · $7.56M

Total Shares Bought

Total Shares Sold

462,758

MASS Price Chart

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Date	Type	Shares	Avg Price	Value	Shares After
Sep 4, 2026	Sell	30,000	$10.58	$317.4K	775,559
Aug 12, 2026	Sell	17,800	$9.12	$162.4K	813,917
Aug 7, 2026	Sell	20,000	$8.49	$169.8K	823,359
Jul 7, 2026	Sell	2,200	$9.02	$19.8K	843,359
Jul 2, 2026	Sell	20,000	$8.84	$176.8K	845,559
Jun 25, 2026	Sell	9,900	$9.04	$89.5K	865,559
Jun 5, 2026	Sell	100	$9.00	$900.00	875,459
Jun 4, 2026	Sell	20,000	$8.73	$174.6K	875,559
May 29, 2026	Sell	30,000	$9.00	$270.0K	895,559
May 7, 2026	Sell	20,000	$7.23	$144.6K	925,559
Apr 10, 2026	Sell	40,000	$7.06	$282.3K	970,529
Feb 4, 2025	Sell	7,767	$2.34	$18.2K	968,222
Feb 2, 2024	Sell	3,957	$7.01	$27.7K	888,752
Dec 21, 2023	Sell	20,000	$9.10	$182.0K	891,815
Jun 9, 2023	Sell	4,470	$10.03	$44.8K	897,905
May 25, 2023	Sell	10,000	$10.02	$100.2K	892,375
Feb 3, 2023	Sell	11,564	$9.91	$114.6K	912,375
Sep 14, 2022	Sell	20,000	$19.58	$391.6K	908,912
Jul 8, 2022	Sell	10,000	$21.28	$212.8K	932,112
Jul 1, 2022	Sell	20,171	$20.20	$407.5K	942,612
Apr 14, 2022	Sell	9,829	$20.06	$197.2K	959,083
Mar 21, 2022	Sell	19,900	$20.06	$399.2K	968,912
Mar 15, 2022	Sell	100	$20.00	$2.0K	988,812
Jan 7, 2022	Sell	10,000	$23.67	$236.7K	995,626
Dec 3, 2021	Sell	10,000	$23.86	$238.6K	1,000,142
Nov 4, 2021	Sell	15,000	$32.86	$492.9K	1,012,338
Oct 7, 2021	Sell	15,000	$32.31	$484.7K	1,025,492
Sep 3, 2021	Sell	15,000	$35.92	$538.7K	1,045,227
Aug 6, 2021	Sell	15,000	$32.54	$488.1K	1,064,412
Jul 8, 2021	Sell	35,000	$33.63	$1.18M	1,074,147