Insider · CIK 0001836988

Brown Christopher D.

Reports to the SEC for 1 company · BURLINGTON, MA

sec.gov

Transactions

Companies

Filings

CIK

0001836988

Forms 4 and 5

Insider transactions

50 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2026-10-07	MASS908 Devices Inc.M Exercise/Conversion	Director	MExercise/Conversion	+60K sh	$1.75	+$105K	805,559
2026-10-07	MASS908 Devices Inc.S Sale	Director	SSale	−30K sh	$11.89	−$357K	745,559
2026-10-07	MASS908 Devices Inc. · Stock Option (option to buy)M Exercise/Conversion	Director	MExercise/Conversion	−60K sh	—	—	54,318
2026-09-02	MASS908 Devices Inc.S Sale	Director	SSale	−30K sh	$10.58	−$317K	775,559
2026-08-11	MASS908 Devices Inc.S Sale	Director	SSale	−8,358 sh	$9.23	−$77.1K	805,559
2026-08-10	MASS908 Devices Inc.S Sale	Director	SSale	−9,442 sh	$9.03	−$85.3K	813,917
2026-08-05	MASS908 Devices Inc.S Sale	Director	SSale	−20K sh	$8.49	−$170K	823,359
2026-07-02	MASS908 Devices Inc.S Sale	Director	SSale	−2,200 sh	$9.02	−$19.8K	843,359
2026-06-30	MASS908 Devices Inc.S Sale	Director	SSale	−20K sh	$8.84	−$177K	845,559
2026-06-23	MASS908 Devices Inc.S Sale	Director	SSale	−9,900 sh	$9.04	−$89.5K	865,559
2026-06-04	MASS908 Devices Inc.S Sale	Director	SSale	−100 sh	$9.00	−$900	875,459
2026-06-03	MASS908 Devices Inc.S Sale	Director	SSale	−20K sh	$8.73	−$175K	875,559
2026-05-28	MASS908 Devices Inc.S Sale	Director	SSale	−30K sh	$9.00	−$270K	895,559
2026-05-06	MASS908 Devices Inc.S Sale	Director	SSale	−20K sh	$7.23	−$145K	925,559
2026-04-10	MASS908 Devices Inc.S Sale	Director	SSale	−17.6K sh	$7.07	−$124K	945,559
2026-04-09	MASS908 Devices Inc.S Sale	Director	SSale	−7,392 sh	$7.04	−$52K	963,137
2026-04-08	MASS908 Devices Inc.S Sale	Director	SSale	−15K sh	$7.05	−$106K	970,529
2026-02-01	MASS908 Devices Inc.M Exercise/Conversion	Director	MExercise/Conversion	+7,418 sh	—	—	974,567
2026-02-01	MASS908 Devices Inc.M Exercise/Conversion	Director	MExercise/Conversion	+11K sh	—	—	985,559
2026-02-01	MASS908 Devices Inc.M Exercise/Conversion	Director	MExercise/Conversion	+5,027 sh	—	—	967,149
2026-02-01	MASS908 Devices Inc. · Restricted Stock UnitsM Exercise/Conversion	Director	MExercise/Conversion	−7,418 sh	—	—	7,418
2026-02-01	MASS908 Devices Inc. · Restricted Stock UnitsM Exercise/Conversion	Director	MExercise/Conversion	−11K sh	—	—	21,982
2026-02-01	MASS908 Devices Inc. · Restricted Stock UnitsM Exercise/Conversion	Director	MExercise/Conversion	−5,027 sh	—	—	0
2025-02-03	MASS908 Devices Inc.S Sale	Director	SSale	−2,459 sh	$2.34	−$5,762.912	965,763
2025-02-03	MASS908 Devices Inc.S Sale	Director	SSale	−3,641 sh	$2.33	−$8,501.371	962,122
2025-02-03	MASS908 Devices Inc.S Sale	Director	SSale	−1,667 sh	$2.36	−$3,926.452	968,222
2025-02-01	MASS908 Devices Inc.M Exercise/Conversion	Director	MExercise/Conversion	+7,418 sh	—	—	958,898
2025-02-01	MASS908 Devices Inc.M Exercise/Conversion	Director	MExercise/Conversion	+5,027 sh	—	—	951,480
2025-02-01	MASS908 Devices Inc.M Exercise/Conversion	Director	MExercise/Conversion	+11K sh	—	—	969,889
2025-02-01	MASS908 Devices Inc. · Restricted Stock UnitsM Exercise/Conversion	Director	MExercise/Conversion	−5,027 sh	—	—	5,027
2025-02-01	MASS908 Devices Inc. · Restricted Stock UnitsM Exercise/Conversion	Director	MExercise/Conversion	−7,418 sh	—	—	14,836
2025-02-01	MASS908 Devices Inc. · Restricted Stock UnitsM Exercise/Conversion	Director	MExercise/Conversion	−11K sh	—	—	32,974
2024-12-19	MASS908 Devices Inc.M Exercise/Conversion	Director	MExercise/Conversion	+55.1K sh	$1.58	+$87.1K	946,453
2024-12-19	MASS908 Devices Inc. · Stock Option (Right to Buy)M Exercise/Conversion	Director	MExercise/Conversion	−55.1K sh	—	—	0
2024-08-07	MASS908 Devices Inc. · Stock Option (Right to Buy)M Exercise/Conversion	Director	MExercise/Conversion	−6,328 sh	—	—	55,131
2024-08-07	MASS908 Devices Inc.M Exercise/Conversion	Director	MExercise/Conversion	+6,328 sh	$1.58	+$9,998.24	891,322
2024-04-01	MASS908 Devices Inc. · Stock Option (Right to Buy)M Exercise/Conversion	Director	MExercise/Conversion	−3,600 sh	—	—	114,318
2024-04-01	MASS908 Devices Inc.M Exercise/Conversion	Director	MExercise/Conversion	+3,600 sh	$1.75	+$6,300	884,994
2024-03-01	MASS908 Devices Inc. · Restricted Stock UnitsA Award	Director	AAward	+44K sh	—	—	43,965
2024-03-01	MASS908 Devices Inc. · Stock Option (option to buy)A Award	Director	AAward	+60.1K sh	—	—	60,064
2024-02-01	MASS908 Devices Inc.M Exercise/Conversion	Director	MExercise/Conversion	+5,028 sh	—	—	882,933
2024-02-01	MASS908 Devices Inc.M Exercise/Conversion	Director	MExercise/Conversion	+7,418 sh	—	—	890,351
2024-02-01	MASS908 Devices Inc.S Sale	Director	SSale	−1,599 sh	$6.99	−$11.2K	888,752
2024-02-01	MASS908 Devices Inc.S Sale	Director	SSale	−2,358 sh	$7.02	−$16.5K	886,394
2024-02-01	MASS908 Devices Inc. · Restricted Stock UnitsM Exercise/Conversion	Director	MExercise/Conversion	−5,028 sh	—	—	10,054
2024-02-01	MASS908 Devices Inc. · Restricted Stock UnitsM Exercise/Conversion	Director	MExercise/Conversion	−7,418 sh	—	—	22,254
2023-12-21	MASS908 Devices Inc.S Sale	Director	SSale	−7,370 sh	$9.12	−$67.2K	877,905
2023-12-20	MASS908 Devices Inc.S Sale	Director	SSale	−5,235 sh	$9.10	−$47.6K	885,275
2023-12-19	MASS908 Devices Inc.S Sale	Director	SSale	−1,305 sh	$9.08	−$11.8K	890,510
2023-12-19	MASS908 Devices Inc.S Sale	Director	SSale	−6,090 sh	$9.08	−$55.3K	891,815

Recent filings

Accepted (ET)
Oct 9 16:154
Brown Christopher D.0001836988-26-000027
SEC(opens sec.gov)
Sep 44
Brown Christopher D.0001836988-26-000025
SEC(opens sec.gov)
Aug 124
Brown Christopher D.0001836988-26-000023
SEC(opens sec.gov)
Aug 74
Brown Christopher D.0001836988-26-000021
SEC(opens sec.gov)
Jul 74
Brown Christopher D.0001836988-26-000019
SEC(opens sec.gov)
Jul 24
Brown Christopher D.0001836988-26-000017
SEC(opens sec.gov)
Jun 254
Brown Christopher D.0001836988-26-000015
SEC(opens sec.gov)
Jun 54
Brown Christopher D.0001836988-26-000013
SEC(opens sec.gov)
Jun 44
Brown Christopher D.0001836988-26-000011
SEC(opens sec.gov)
May 294
Brown Christopher D.0001836988-26-000009
SEC(opens sec.gov)
May 74
Brown Christopher D.0001836988-26-000007
SEC(opens sec.gov)
Apr 104
Brown Christopher D.0001836988-26-000005
SEC(opens sec.gov)
Feb 34
Brown Christopher D.0001836988-26-000002
SEC(opens sec.gov)

Companies

908 Devices Inc.DirectorMASS

Address

C/O 908 DEVICES INC. 44 3RD AVENUE

BURLINGTON, MA, 01803