MASS

908 Devices Inc.

Measuring & Controlling Devices, NECNasdaqNon-accelerated filer<br>Smaller reporting company<br>Emerging growth company

Total Trades

Buys

Sells

Largest Trade

N/A

Insiders

Institutional Funds

Inst. Value

$1M+

Activist Filings

Insider Trades

Insider	Title	Type	Value	Shares	Price	Date
Knopp Kevin J.	President and CEO	SELL	$1K–$15K	200	$22.04	Jul 25, 2022
Knopp Kevin J.	President and CEO	SELL	$500K+	30K	$17.37	Jul 19, 2022
Brown Christopher D.	CTO	SELL	$100K–$500K	10K	$21.28	Jul 8, 2022
Knopp Kevin J.	President and CEO	SELL	$15K–$50K	1K	$22.07	Jul 8, 2022
Turner Michael S.	VP, General Counsel	SELL	$100K–$500K	5K	$20.03	Jul 1, 2022
Brown Christopher D.	CTO	SELL	$100K–$500K	20K	$20.20	Jul 1, 2022
Griffith Joseph H. IV	CFO	EXERCISE	$15K–$50K	18K	$0.96	Jun 27, 2022
Griffith Joseph H. IV	CFO	SELL	$100K–$500K	18K	$19.12	Jun 27, 2022
Turner Michael S.	VP, General Counsel	EXERCISE	$50K–$100K	10K	$7.91	Jun 27, 2022
Turner Michael S.	VP, General Counsel	SELL	$100K–$500K	10K	$17.90	Jun 27, 2022
Griffith Joseph H. IV	CFO	SELL	$100K–$500K	9K	$15.05	Jun 22, 2022
Griffith Joseph H. IV	CFO	EXERCISE	$1K–$15K	9K	$0.96	Jun 22, 2022
Knopp Kevin J.	President and CEO	SELL	$100K–$500K	9K	$15.07	Jun 22, 2022
Griffith Joseph H. IV	CFO	EXERCISE	<$1K	1K	$0.96	Jun 17, 2022
Griffith Joseph H. IV	CFO	SELL	$15K–$50K	1K	$15.02	Jun 17, 2022
Knopp Kevin J.	President and CEO	SELL	$100K–$500K	21K	$14.66	Jun 17, 2022
Griffith Joseph H. IV	CFO	EXERCISE	$1K–$15K	13K	$0.96	Jun 15, 2022
Griffith Joseph H. IV	CFO	SELL	$100K–$500K	13K	$13.54	Jun 15, 2022
Kenneweg John	Vice President	SELL	$100K–$500K	10K	$20.07	Apr 14, 2022
Kenneweg John	Vice President	EXERCISE	$1K–$15K	10K	$0.35	Apr 14, 2022
Brown Christopher D.	CTO	SELL	$100K–$500K	10K	$20.06	Apr 14, 2022
Basarsky Trent A.	VP	EXERCISE	$50K–$100K	30K	$1.75	Apr 13, 2022
Basarsky Trent A.	VP	SELL	$100K–$500K	15K	$19.74	Apr 13, 2022
Kenneweg John	Vice President	SELL	$100K–$500K	20K	$20.06	Mar 21, 2022
Kenneweg John	Vice President	EXERCISE	$1K–$15K	20K	$0.35	Mar 21, 2022
Brown Christopher D.	CTO	SELL	$100K–$500K	20K	$20.06	Mar 21, 2022
Brown Christopher D.	CTO	SELL	$1K–$15K	100	$20.00	Mar 15, 2022
Kenneweg John	Vice President	EXERCISE	<$1K	119	$0.35	Mar 15, 2022
Kenneweg John	Vice President	SELL	$1K–$15K	119	$20.00	Mar 15, 2022
Basarsky Trent A.	VP	SELL	$100K–$500K	15K	$17.66	Mar 15, 2022
Basarsky Trent A.	VP	EXERCISE	$15K–$50K	15K	$1.98	Mar 15, 2022
Basarsky Trent A.	VP	SELL	$100K–$500K	15K	$15.18	Feb 16, 2022
Basarsky Trent A.	VP	EXERCISE	$15K–$50K	15K	$1.75	Feb 16, 2022
Basarsky Trent A.	VP	SELL	$100K–$500K	15K	$19.43	Jan 14, 2022
Basarsky Trent A.	VP	EXERCISE	$15K–$50K	15K	$1.75	Jan 14, 2022
Kenneweg John	Vice President	EXERCISE	$1K–$15K	10K	$0.35	Jan 12, 2022
Kenneweg John	Vice President	SELL	$100K–$500K	10K	$20.14	Jan 12, 2022
Brown Christopher D.	CTO	SELL	$100K–$500K	10K	$23.67	Jan 7, 2022

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Institutional Ownership

13F filings as of Dec 31, 2025 · 88 funds holding

Fund	Shares	Value	Type
AWM Investment Company, Inc.	5.2M	$1M+	SH
First Light Asset Management, LLC	4.8M	$1M+	SH
ARK Investment Management LLC	2.0M	$1M+	SH
First Eagle Investment Management, LLC	624K	$1M+	SH
GEODE CAPITAL MANAGEMENT, LLC	600K	$1M+	SH
STATE STREET CORP	596K	$1M+	SH
ESSEX INVESTMENT MANAGEMENT CO LLC	483K	$1M+	SH
PRESCOTT GROUP CAPITAL MANAGEMENT, L.L.C.	362K	$1M+	SH
Sumitomo Mitsui Trust Group, Inc.	288K	$1M+	SH
Amova Asset Management Americas, Inc.	288K	$1M+	SH
GM Advisory Group, LLC	279K	$1M+	SH
HighMark Wealth Management LLC	241K	$1M+	SH
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	241K	$1M+	SH
DIMENSIONAL FUND ADVISORS LP	231K	$1M+	SH
RENAISSANCE TECHNOLOGIES LLC	222K	$1M+	SH
Squarepoint Ops LLC	219K	$1M+	SH
MARSHALL WACE, LLP	191K	$1M+	SH
Legato Capital Management LLC	156K	$500K+	SH
HRT FINANCIAL LP	155K	$500K+	SH
Mitsubishi UFJ Asset Management Co., Ltd.	141K	$500K+	SH