908 Devices Inc.

MASS

Exchange: Nasdaq
Industry: Laboratory Analytical Instruments
SEC CIK: 0001555279

SEC filings (opens in a new tab)

In the last 90 days, 908 Devices Inc. insiders filed 0 open-market purchases and 10 sales; 111 institutions reported holding it in 13F filings for Q2 2026, worth $244.1M in total; ARK Invest is the only superinvestor holding it.

Key figures

Market capClose on Nov 10, 2026: $412.7M
Insider buysOpen market, last 90 days: 0
Insider sellsLast 90 days, $2.78M in total: 10
13F holdersQ2 2026, +3 vs. previous quarter: 111
13F valueReported value at the end of Q2 2026: $244.1M
Superinvestors holdingAt the end of Q2 2026: 1

Price chart

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Financials

See financial statements

From SEC filings, in USD.

Revenue, FY2025: $56.2M; −5.8% year over year
Net income, FY2025: $19.5M; No comparable prior period
Free cash flow, FY2025: -$24.6M; No comparable prior period
Revenue, Q2 FY2026: $16.1M; +23.3% year over year

Revenue flow, FY2025

Green is profit; orange is costs, expenses and taxes. Percentages are shares of revenue.

Net income for FY2025: $19.5M (34.7% of revenue).

Short interest

See short data

From FINRA, settlement date Oct 15, 2026.

Short interest: 2.71M; Shares sold short
Change: −19.5K; −0.7% vs. previous
Days to cover: 7.12; At average daily volume

Superinvestors holding MASS, Q2 2026

Go to the superinvestors tab

1 superinvestor reports holding 908 Devices Inc. on Form 13F. Percentages are the stock's share of each portfolio.

ARK Invest

Cathie Wood

0.1%

908 Devices Inc.'s share of the portfolio

Shares: 2,027,920
Value: $17.6M

Latest insider trades

See all insider trades

Open-market purchases and sales by 908 Devices Inc. insiders from Form 4, newest first.

Insider trades
Filed (ET)	Trade date	Filing delay	Insider	Transaction	Shares	Avg price	Value	Holding change	Flags
Nov 6, 2026 (view filing)4:30 PM ET	Nov 4	2 days	Brown Christopher D.Director	SSale	−30.0K	$10.95	−$328.5K	−3.7%775.6K after	10b5-1
Oct 9, 2026 (view filing)4:15 PM ET	Oct 7	2 days	Brown Christopher D.Director	SSale	−30.0K	$11.89	−$356.7K	−3.9%745.6K after	10b5-1
Oct 8, 2026 (view filing)4:43 PM ET	Oct 6	2 days	Griffith Joseph H. IVChief Financial Officer	SSale	−5.00K	$13.03	−$65.2K	−4.1%116.5K after	10b5-1
Oct 1, 2026 (view filing)5:02 PM ET	Sep 29	2 days	AWM Investment Company, Inc.10% Owner	SSale	−18.0K	$11.52	−$207.3K	−0.4%4.74M after
Sep 25, 2026 (view filing)4:19 PM ET	Sep 23-24	2 days	AWM Investment Company, Inc.10% Owner	SSale	−25.0K	$11.36	−$283.9K	−0.5%4.75M after	2 lots
Sep 17, 2026 (view filing)5:27 PM ET	Sep 15-17	2 days	Kenneweg JohnSVP, Sales & Product Marketing	SSale	−27.7K	$10.13	−$280.1K	−32.4%57.8K after	3 lots10b5-1
Sep 4, 2026 (view filing)4:15 PM ET	Sep 2	2 days	Brown Christopher D.Director	SSale	−30.0K	$10.58	−$317.4K	−3.7%775.6K after	10b5-1
Aug 27, 2026 (view filing)4:55 PM ET	Aug 25	2 days	Griffith Joseph H. IVChief Financial Officer	SSale	−11.5K	$10.95	−$125.5K	−8.6%121.5K after	10b5-1
Aug 24, 2026 (view filing)4:50 PM ET	Aug 20-21	4 days	AWM Investment Company, Inc.10% Owner	SSale	−50.0K	$10.60	−$529.8K	−1.0%4.78M after	2 lots
Aug 17, 2026 (view filing)5:30 PM ET	Aug 13-17	4 days	Knopp Kevin J.President and CEO	SSale	−27.6K	$10.27	−$283.7K	−4.7%556.0K after	2 lots10b5-1

Top 10 13F holders, Q2 2026

See all 111 holders

The largest institutional positions in 908 Devices Inc. at the end of Q2 2026; share changes are against Q1 2026.

Institutions holding MASS in Q2 2026
Institution	Shares	Value	% of portfolio	Change in shares	Action
First Light Asset Management, LLC	6,282,804	$54.7M	3.32%	+210,241+3.5%	Added
AWM Investment Company, Inc.	4,879,773	$42.5M	3.68%	−320,151−6.2%	Reduced
ARK Investment Management LLCSuperinvestorARK Invest	2,027,920	$17.6M	0.11%	+81,235+4.2%	Added
BlackRock, Inc.	1,944,236	$16.9M	0.00%	+176,920+10.0%	Added
Needham Investment Management LLC	1,820,620	$15.8M	0.48%	+580,620+46.8%	Added
Vanguard Capital Management LLC	1,291,570	$11.2M	0.00%	+172,334+15.4%	Added
First Eagle Investment Management, LLC	929,985	$8.09M	0.01%	+126,379+15.7%	Added
Geode Capital Management, LLC	761,797	$6.63M	0.00%	+66,342+9.5%	Added
Granahan Investment Management Inc	692,092	$6.02M	0.21%	−2,978−0.4%	Reduced
State Street Corp	606,560	$5.28M	0.00%	−19,332−3.1%	Reduced

Holders of 5% or more of MASS

See all 4 holders and filings

Holders whose latest Schedule 13D or 13G filing reports 5% or more of 908 Devices Inc..

Largest holders of MASS from 13D and 13G filings
Holder	Latest form	Stake	Change	First filed	Latest filing	Filing
First Light Asset Management, LLC	13G/A	17.09%6.18M shares	+4.16 ppfrom 12.93%	Nov 14, 20253 filings	Feb 17, 2026	SEC
ARCH Venture Fund VII, L.P.	13G/A	14.10%5.82M shares	−1.20 ppfrom 15.30%	Feb 4, 20217 filings	Aug 14, 2026	SEC
AWM Investment Company, Inc.	13G/A	11.80%4.88M shares	−2.90 ppfrom 14.70%	Apr 7, 20252 filings	Aug 14, 2026	SEC
ARK Investment Management LLCSuperinvestorARK Invest	13G/A	5.32%2.03M shares	+0.38 ppfrom 4.94%	Sep 10, 202110 filings	Aug 14, 2026	SEC