Stocks
MASS 908 Devices Inc.

MASS

908 Devices Inc.

Company with tickers: MASS

CIK

1555279

CUSIP

65443P102

Shares Outstanding

37,379,953

Price Holdings Short Volume Short Interest Fails to Deliver SEC Filings Earnings Calls Insider Trading Congress Trades

Date	Insider	Role	Type	Shares	Price	Value	After
2026-04-10	Brown Christopher D.	Director	Sell	17,578	$7.07	$124,276	945,559
2026-04-09	McCallion Kevin J.	SVP, Products and Production	Convert	5,420	—	—	2,686
2026-04-09	McCallion Kevin J.	SVP, Products and Production	Convert	5,420	$1.05	$5,691	50,345
2026-04-09	Brown Christopher D.	Director	Sell	7,392	$7.04	$52,040	963,137
2026-04-09	McCallion Kevin J.	SVP, Products and Production	Sell	5,420	$7.03	$38,103	44,925
2026-04-08	McCallion Kevin J.	SVP, Products and Production	Convert	18,580	—	—	8,106
2026-04-08	McCallion Kevin J.	SVP, Products and Production	Convert	18,580	$1.05	$19,509	63,505
2026-04-08	McCallion Kevin J.	SVP, Products and Production	Sell	18,580	$7.05	$130,989	44,925
2026-04-08	Brown Christopher D.	Director	Sell	15,030	$7.05	$105,962	970,529
2026-03-02	McCallion Kevin J.	SVP, Products and Production	Sell	7	$7.00	$49	44,918
2026-02-26	Levine Mark S.	Chief Legal Officer	Other	0	—	—	0
2026-02-26	Levine Mark S.	Chief Legal Officer	Other	0	—	—	0
2026-02-26	Kenneweg John	Vice President, Government	Other	0	—	—	0
2026-02-26	McCallion Kevin J.	SVP, Products and Production	Other	0	—	—	0
2026-02-26	McCallion Kevin J.	SVP, Products and Production	Other	0	—	—	0
2026-02-26	McCallion Kevin J.	SVP, Products and Production	Other	44,925	—	—	44,925
2026-02-26	Kenneweg John	Vice President, Government	Other	57,784	—	—	57,784
2026-02-26	Kenneweg John	Vice President, Government	Other	0	—	—	0
2026-02-02	Griffith Joseph H. IV	Chief Financial Officer	Award	121,164	—	—	121,164
2026-02-02	Griffith Joseph H. IV	Chief Financial Officer	Award	52,967	—	—	52,967
2026-02-02	Griffith Joseph H. IV	Chief Financial Officer	Sell	23,175	$6.18	$143,222	139,896
2026-02-02	Knopp Kevin J.	Director, President and CEO	Sell	34,764	$6.18	$214,842	795,968
2026-02-02	Knopp Kevin J.	Director, President and CEO	Award	90,043	—	—	90,043
2026-02-02	Knopp Kevin J.	Director, President and CEO	Award	205,978	—	—	205,978
2026-02-01	Brown Christopher D.	Director	Convert	5,027	—	—	0
2026-02-01	Brown Christopher D.	Director	Convert	5,027	—	—	967,149
2026-02-01	Griffith Joseph H. IV	Chief Financial Officer	Convert	5,102	—	—	98,032
2026-02-01	Griffith Joseph H. IV	Chief Financial Officer	Convert	5,102	—	—	0
2026-02-01	Knopp Kevin J.	Director, President and CEO	Convert	11,255	—	—	0
2026-02-01	Knopp Kevin J.	Director, President and CEO	Convert	11,255	—	—	733,988
2026-02-01	Knopp Kevin J.	Director, President and CEO	Other	541,223	—	—	541,223
2025-12-30	Spoto Mark	Director	Gift	928	—	—	0
2025-10-14	Spoto Mark	Director	Other	3,599	—	—	3,599
2025-10-14	Spoto Mark	Director	Discretionary	928	—	—	928
2025-10-03	Griffith Joseph H. IV	Chief Financial Officer	Sell	4,292	$9.05	$38,849	92,930
2025-10-02	Griffith Joseph H. IV	Chief Financial Officer	Sell	708	$9.04	$6,398	97,222
2025-09-19	Griffith Joseph H. IV	Chief Financial Officer	Sell	5,000	$7.07	$35,339	97,930
2025-08-01	Vann Brandi C	Director	Other	0	—	—	0
2025-08-01	Vann Brandi C	Director	Award	15,577	—	—	15,577
2025-08-01	Vann Brandi C	Director	Award	20,409	—	—	20,409
2025-06-25	Leonhart Michele M.	Director	Convert	6,485	—	—	6,485
2025-06-25	Leonhart Michele M.	Director	Convert	6,485	—	—	12,971
2025-06-18	Turner Michael S.	Chief Legal & Admin Officer	Sell	1,373	$7.50	$10,298	0
2025-06-17	Turner Michael S.	Chief Legal & Admin Officer	Sell	7,148	$7.51	$53,653	1,373
2025-06-16	Turner Michael S.	Chief Legal & Admin Officer	Sell	16,082	$7.51	$120,839	8,521
2025-06-13	Brown Christopher D.	Director	Other	962,122	—	—	962,122
2025-06-13	Brown Christopher D.	Director	Other	0	—	—	0
2025-06-13	Brown Christopher D.	Director	Other	0	—	—	0
2025-06-12	George Jeffrey P.	Director	Award	14,083	—	—	14,083
2025-06-12	George Jeffrey P.	Director	Award	6,516	—	—	6,516
2025-06-12	Leonhart Michele M.	Director	Award	6,516	—	—	6,516
2025-06-12	Leonhart Michele M.	Director	Award	14,083	—	—	14,083
2025-06-12	HRUSOVSKY E KEVIN	Director, Executive Chairman	Award	14,083	—	—	14,083
2025-06-12	HRUSOVSKY E KEVIN	Director, Executive Chairman	Award	6,516	—	—	6,516
2025-06-12	Hunt Anthony	Director	Award	6,516	—	—	6,516
2025-06-12	Hunt Anthony	Director	Award	14,083	—	—	14,083
2025-06-12	ELOI FENEL M	Director	Award	6,516	—	—	6,516
2025-06-12	ELOI FENEL M	Director	Award	14,083	—	—	14,083
2025-06-12	CRANDELL KEITH	10% Owner	Award	14,083	—	—	14,083
2025-06-12	CRANDELL KEITH	10% Owner	Award	6,516	—	—	6,516
2025-06-12	Spoto Mark	Director	Award	6,516	—	—	6,516
2025-06-12	Spoto Mark	Director	Award	14,083	—	—	14,083
2025-06-11	HRUSOVSKY E KEVIN	Director, Executive Chairman	Other	329,675	—	—	329,675
2025-06-11	HRUSOVSKY E KEVIN	Director, Executive Chairman	Convert	11,364	—	—	0
2025-06-11	HRUSOVSKY E KEVIN	Director, Executive Chairman	Convert	11,364	—	—	151,307
2025-06-11	Hunt Anthony	Director	Convert	11,364	—	—	30,085
2025-06-11	Hunt Anthony	Director	Convert	11,364	—	—	0
2025-06-11	Eisenberg Marcia	Director	Convert	11,364	—	—	0
2025-06-11	Eisenberg Marcia	Director	Convert	11,364	—	—	25,957
2025-06-11	George Jeffrey P.	Director	Convert	11,364	—	—	0
2025-06-11	George Jeffrey P.	Director	Convert	11,364	—	—	26,814
2025-06-11	ELOI FENEL M	Director	Convert	11,364	—	—	0
2025-06-11	ELOI FENEL M	Director	Convert	11,364	—	—	26,814
2025-06-11	CRANDELL KEITH	10% Owner	Convert	11,364	—	—	25,291
2025-06-11	CRANDELL KEITH	10% Owner	Convert	11,364	—	—	0
2025-06-11	CRANDELL KEITH	10% Owner	Other	5,725,045	—	—	5,725,045
2025-06-11	Spoto Mark	Director	Convert	11,364	—	—	0
2025-06-11	Spoto Mark	Director	Other	3,599	—	—	3,599
2025-06-11	Spoto Mark	Director	Convert	11,364	—	—	74,335
2025-06-04	Griffith Joseph H. IV	Chief Financial Officer	Sell	6,940	$7.08	$49,135	102,930
2025-05-15	Knopp Kevin J.	Director, President and CEO	Buy	15,000	$4.44	$66,596	722,733
2025-05-15	Knopp Kevin J.	Director, President and CEO	Other	541,223	—	—	541,223
2025-05-14	Spoto Mark	Director	Other	3,599	—	—	3,599
2025-05-14	Spoto Mark	Director	Buy	7,000	$4.30	$30,100	59,971
2025-05-14	Knopp Kevin J.	Director, President and CEO	Buy	15,000	$4.32	$64,788	707,733
2025-05-14	Knopp Kevin J.	Director, President and CEO	Other	541,223	—	—	541,223
2025-03-04	AWM Investment Company, Inc.	10% Owner	Other	5,199,924	—	—	5,199,924
2025-03-03	Knopp Kevin J.	Director, President and CEO	Award	90,518	—	—	90,518
2025-03-03	Knopp Kevin J.	Director, President and CEO	Award	198,864	—	—	198,864
2025-03-03	Turner Michael S.	Chief Legal & Admin Officer	Award	125,470	—	—	125,470
2025-03-03	Turner Michael S.	Chief Legal & Admin Officer	Award	57,111	—	—	57,111
2025-03-03	Griffith Joseph H. IV	Chief Financial Officer	Award	130,418	—	—	130,418
2025-03-03	Griffith Joseph H. IV	Chief Financial Officer	Award	59,362	—	—	59,362
2025-03-02	Hunt Anthony	Director	Convert	2,058	—	—	18,721
2025-03-02	Hunt Anthony	Director	Convert	2,058	—	—	0
2025-02-03	Griffith Joseph H. IV	Chief Financial Officer	Sell	1,960	$2.34	$4,582	118,146
2025-02-03	Turner Michael S.	Chief Legal & Admin Officer	Sell	1,703	$2.36	$4,014	32,572
2025-02-03	Knopp Kevin J.	Director, President and CEO	Sell	4,318	$2.33	$10,064	704,416
2025-02-03	Brown Christopher D.	Director	Sell	1,667	$2.36	$3,926	968,222
2025-02-01	Brown Christopher D.	Director	Convert	5,027	—	—	951,480