Computed from SEC EDGAR filings and closing prices — not copied from any wealth ranking. Dataset . How we calculate this.

Market capitalisation
$393.50M
41,333,705 shares Covers every share class this company has on file.
Insiders on file
7
people who have filed Form 3, 4 or 5 naming this issuer
Value of insider-held stock
$87.95M
from the holdings reported on Forms 3/4/5; this figure has no separate as-of date on file
Insider-held share of market cap
22.35%
insider-held value divided by market capitalisation

What 908 Devices Inc. reports

Revenue and net income below are for fiscal period FY2025, the period label carried by this company’s own annual XBRL filings to the SEC. Fiscal years do not line up between companies — one company’s FY2026 can cover much the same months as another’s FY2025 — so compare the periods, not just the numbers.

Revenue
$56.20M
FY2025 annual revenue, from this company’s own annual XBRL filings to the SEC
Net income
$19.49M
FY2025 profit for the period, from this company’s own annual XBRL filings to the SEC
Employees
172
Yahoo Finance
Where the employee count comes from

Headcount comes from Yahoo Finance, not from a filing. The date beside it is the day we retrieved the figure — it is not the date the company counted its staff, and Yahoo does not publish that date. Unlike the SEC filings behind the other figures on this page, this one carries no open licence, so we publish the number and nothing else from that source.

Insiders at 908 Devices Inc.

Shares is what each person last reported holding here.

Everyone below has filed at least one insider report against this company.

Value is that share count priced at the same closing price used everywhere else on this site. A row priced from only some of a person’s securities says so — we do not quietly present a partial sum as a complete one.

Rows are grouped by the role each person reports.

The role comes from the relationship boxes a person ticks on their own insider filings — officer, director, ten per cent owner — not from anything we infer. Somebody who is both an officer and a director appears once, in the combined group, so the row count still matches the figure at the top of this page. Where no filing states a role we say so instead of guessing one.

People who file insider reports against 908 Devices Inc..
Insider Reported role Shares Value Last action
Officers 1
Joseph H. Griffith IV CFO 139,896 $1.41M S Open-market sale Aug 25, 2026 position reported
Officers who also sit on the board 3
Kevin J Knopp CEO 1,337,191 $13.44M S Open-market sale Aug 17, 2026 position reported
Christopher D Brown Other Executive 985,559 $9.90M S Open-market sale Sep 2, 2026 position reported
Anthony Hunt CEO 30,085 $302.4K M Option exercise or conversion Jun 10, 2026 position reported
Directors 3
Keith Crandell Board Member 5,750,336 $57.79M M Option exercise or conversion Jun 10, 2026 position reported
E. Kevin Hrusovsky Board Member 480,982 $4.83M M Option exercise or conversion Jun 10, 2026 position reported
Jeffrey P George Board Member 26,814 $269.5K M Option exercise or conversion Jun 11, 2025 position reported

Events from filings

Detected automatically in the filings linked below. Each headline is built from the numbers in those filings, not written by a model. Newest first; events older than 45 days stay listed and are marked as older.

Kevin J Knopp sold 115,748 908 Devices Inc. (MASS) shares for $1,137,803 on Aug 11, 2026

Large trade for this person

Flagged because this trade was large compared with this person’s own earlier open-market trades in the same currency — not because it is large in absolute terms. A trade that is routine for one insider can be flagged for another.

Kevin J Knopp sold 115,748 908 Devices Inc. (MASS) shares for $1,137,803 on Aug 11, 2026
Date Insider Transaction Shares Price Value Filing
Aug 11, 2026 Kevin J Knopp S Open-market sale 115,748 held after: 616,507 $9.83 $1,137,803 SEC filing ↗

Source: SEC EDGAR (United States); every row links to where it was published. Event computed Sep 14, 2026.

Kevin J Knopp sold 40,535 908 Devices Inc. (MASS) shares for $370,490 on Jun 24, 2026

Large trade for this person

Flagged because this trade was large compared with this person’s own earlier open-market trades in the same currency — not because it is large in absolute terms. A trade that is routine for one insider can be flagged for another.

Kevin J Knopp sold 40,535 908 Devices Inc. (MASS) shares for $370,490 on Jun 24, 2026
Date Insider Transaction Shares Price Value Filing
Jun 24, 2026 Kevin J Knopp S Open-market sale 40,535 held after: 752,011 $9.14 $370,490 SEC filing ↗

Source: SEC EDGAR (United States); every row links to where it was published. Event computed Sep 14, 2026.

Christopher D Brown sold 17,578 908 Devices Inc. (MASS) shares for $124,276 on Apr 10, 2026

Large trade for this person

Flagged because this trade was large compared with this person’s own earlier open-market trades in the same currency — not because it is large in absolute terms. A trade that is routine for one insider can be flagged for another.

Christopher D Brown sold 17,578 908 Devices Inc. (MASS) shares for $124,276 on Apr 10, 2026
Date Insider Transaction Shares Price Value Filing
Apr 10, 2026 Christopher D Brown S Open-market sale 17,578 held after: 945,559 $7.07 $124,276 SEC filing ↗

Source: SEC EDGAR (United States); every row links to where it was published. Event computed Sep 14, 2026.

Joseph H. Griffith IV sold 23,175 908 Devices Inc. (MASS) shares for $143,222 on Feb 2, 2026

Large trade for this person

Flagged because this trade was large compared with this person’s own earlier open-market trades in the same currency — not because it is large in absolute terms. A trade that is routine for one insider can be flagged for another.

Joseph H. Griffith IV sold 23,175 908 Devices Inc. (MASS) shares for $143,222 on Feb 2, 2026
Date Insider Transaction Shares Price Value Filing
Feb 2, 2026 Joseph H. Griffith IV S Open-market sale 23,175 held after: 139,896 $6.18 $143,222 SEC filing ↗

Source: SEC EDGAR (United States); every row links to where it was published. Event computed Sep 14, 2026.

Recent insider transactions

Of the 87 rows we hold, 7 are open-market purchases (P) and 42 open-market sales (S) — the only codes we count as buying or selling.

The rest — awards, shares withheld to pay tax, option exercises, gifts and so on — follow from an employment contract or a transfer arranged off-market, not from a decision to buy or sell, so counting them would turn this into a pay table.

A price of 0.00 is a real reported figure on gifts (G) and share awards (A) — not a gap in our data.

Insider transactions disclosed to the SEC for 908 Devices Inc., newest first, each with the filing behind it.
Date Insider Transaction Shares Price Value Filing
Jun 4, 2025 Joseph H. Griffith IV S Open-market sale 6,940 $7.08 $49.1K SEC filing ↗
May 15, 2025 Kevin J Knopp P Open-market purchase 15,000 $4.44 $66.6K SEC filing ↗
May 14, 2025 Kevin J Knopp P Open-market purchase 15,000 $4.32 $64.8K SEC filing ↗
Mar 2, 2025 Anthony Hunt M Option exercise or conversion 2,058 $0.00 $0 SEC filing ↗
Feb 3, 2025 Joseph H. Griffith IV S Open-market sale 4,321 $2.35 $10.2K SEC filing ↗
Feb 3, 2025 Joseph H. Griffith IV S Open-market sale 3,955 $2.34 $9.3K SEC filing ↗
Feb 3, 2025 Joseph H. Griffith IV S Open-market sale 1,960 $2.34 $4.6K SEC filing ↗
Feb 3, 2025 Christopher D Brown S Open-market sale 1,667 $2.36 $3.9K SEC filing ↗
Feb 3, 2025 Christopher D Brown S Open-market sale 3,641 $2.33 $8.5K SEC filing ↗
Feb 3, 2025 Christopher D Brown S Open-market sale 2,459 $2.34 $5.8K SEC filing ↗
Feb 3, 2025 Kevin J Knopp S Open-market sale 4,318 $2.33 $10.1K SEC filing ↗
Feb 3, 2025 Kevin J Knopp S Open-market sale 5,159 $2.31 $11.9K SEC filing ↗
Feb 3, 2025 Kevin J Knopp S Open-market sale 6,524 $2.32 $15.1K SEC filing ↗
Feb 1, 2025 Joseph H. Griffith IV M Option exercise or conversion 11,261 $0.00 $0 SEC filing ↗
Feb 1, 2025 Joseph H. Griffith IV M Option exercise or conversion 10,306 $0.00 $0 SEC filing ↗
Feb 1, 2025 Joseph H. Griffith IV M Option exercise or conversion 5,102 $0.00 $0 SEC filing ↗
Feb 1, 2025 Christopher D Brown M Option exercise or conversion 10,991 $0.00 $0 SEC filing ↗
Feb 1, 2025 Christopher D Brown M Option exercise or conversion 7,418 $0.00 $0 SEC filing ↗
Feb 1, 2025 Christopher D Brown M Option exercise or conversion 5,027 $0.00 $0 SEC filing ↗
Feb 1, 2025 Kevin J Knopp M Option exercise or conversion 17,007 $0.00 $0 SEC filing ↗
Feb 1, 2025 Kevin J Knopp M Option exercise or conversion 11,254 $0.00 $0 SEC filing ↗
Feb 1, 2025 Kevin J Knopp M Option exercise or conversion 13,448 $0.00 $0 SEC filing ↗
Dec 19, 2024 Christopher D Brown M Option exercise or conversion 55,131 $1.58 $87.1K SEC filing ↗
Dec 13, 2024 Kevin J Knopp M Option exercise or conversion 110,626 $1.58 $174.8K SEC filing ↗
Dec 13, 2024 Kevin J Knopp M Option exercise or conversion 47,418 $1.75 $83.0K SEC filing ↗

From SEC Form 4 filings. Every row links to the filing it came from. How we calculate this.

What a Form 4 is

The report an officer, director or large shareholder must file after trading their own company’s stock.

Corporate ownership links — 1 filer holds a position

Who owns 908 Devices Inc.

Each row is one filer naming this company.

Funds, trusts and other companies file the same ownership forms that executives do. Everything below is taken from those filings, with the position exactly as the filing states it.

Filers holding a position in 908 Devices Inc.

Funds, trusts and companies that disclose an ownership position in 908 Devices Inc..
Owner Reported role Shares Filed
AWM Investment Company, Inc. TenPercentOwner 5,199,924

See the full ownership map — every entity that files as an owner of a US public company.

Subsidiaries — 2 legal entities

Subsidiaries of 908 Devices Inc.

2 legal entities named in the subsidiary exhibit filed with this company’s most recent 10-K. . Filing on SEC.gov.

This is not the full list. SEC rules only require a company to name its significant subsidiaries.

What that leaves out

Smaller entities are left out of the exhibit entirely. A short list here means a short exhibit — it does not mean the company owns nothing else. Nothing on this page is inferred: every name below is copied from the filing.

Subsidiaries 908 Devices Inc. names in its most recent annual report, with the place each one is organised.
Subsidiary Organised in
908 Devices Securities Corporation Massachusetts
CAM2 Technologies, LLC Connecticut
What counts as a subsidiary

A subsidiary is a separate legal entity this company controls; it is not the same thing as a brand, a division or an office. These entities do not file with the SEC in their own right, so there is no separate page to open for them.

Think a number here is wrong? Open the linked filing and compare — how to report it.

Sources and technical notes

Every figure on this page comes from filings to the U.S. SEC via EDGAR. Nothing here is estimated, and nothing is taken from press coverage or company websites.

Share count: cover page of the latest filing (dei:EntityCommonStockSharesOutstanding), taken from 908 Devices Inc.’s own filings and multiplied by our closing price. Full method.

What that share count means

the share count the company itself prints on the cover of its most recent filing, as of the date it signed that filing.

We do not take a market cap from a data vendor, and we do not estimate one: the figure is a share count from 908 Devices Inc.’s own SEC filings multiplied by the closing price we hold for the same stock.