Joseph H. Griffith IV

MASS

Joseph H. Griffith IV serves as officer: Chief Financial Officer 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

18 trades

$4.33M

Net Position

Net Seller

$4.33M

Companies Traded

MASS

Active Period

Jun 2021 – May 2026

18 total trades

Most Recent

Sell MASS

May 29, 2026 · $62.7K

Joseph H. Griffith IV's Insider Trading at 908 Devices Inc. (MASS)

Buys

0 · $0.00

Sells

18 · $4.33M

Total Shares Bought

Total Shares Sold

214,749

MASS Price Chart

Loading chart...

Date	Type	Shares	Avg Price	Value	Shares After
May 29, 2026	Sell	6,940	$9.03	$62.7K	132,956
Feb 1, 2026	Sell	23,175	$6.18	$143.2K	0
Oct 2, 2025	Sell	5,000	$9.05	$45.2K	0
Sep 19, 2025	Sell	5,000	$7.07	$35.3K	0
Jun 4, 2025	Sell	6,940	$7.08	$49.1K	0
Feb 4, 2025	Sell	10,236	$2.34	$24.0K	118,146
Feb 2, 2024	Sell	15,409	$7.06	$108.8K	93,521
Jan 2, 2024	Sell	6,000	$12.08	$72.5K	80,000
Dec 21, 2023	Sell	5,580	$9.08	$50.7K	86,000
Feb 3, 2023	Sell	5,102	$9.72	$49.6K	94,846
Aug 5, 2022	Sell	13,333	$24.39	$325.1K	91,580
Jun 27, 2022	Sell	18,188	$19.12	$347.7K	91,580
Jun 22, 2022	Sell	9,000	$15.06	$135.5K	91,580
Jun 17, 2022	Sell	1,000	$15.02	$15.0K	91,580
Jun 15, 2022	Sell	13,334	$13.54	$180.5K	91,580
Nov 5, 2021	Sell	2,800	$39.08	$109.4K	88,780
Sep 10, 2021	Sell	49,898	$37.61	$1.88M	130,675
Jun 21, 2021	Sell	17,814	$39.32	$700.4K	91,580