WAVEMAN · COMPANY

MASS · 908 Devices Inc.

LIVE

TEAM-0.32% 13F +439META+2.47% 13F +2,694RCG-2.04% CLUSTERUTHR-4.03% 13F +425CRWV-1.12% 13F +693CRM-0.46% 13F +1,018CVNA+2.74% 13F +794TPL-0.71% 13F +444NET-4.47% 13F +710MSTR-1.35% 13F +526DELL+15.81% 13F +1,203CRWD-5.42% 13F +1,382ANET+2.87% 13F +1,323COIN-1.05% 13F +475TEAM-0.32% 13F +439META+2.47% 13F +2,694RCG-2.04% CLUSTERUTHR-4.03% 13F +425CRWV-1.12% 13F +693CRM-0.46% 13F +1,018CVNA+2.74% 13F +794TPL-0.71% 13F +444NET-4.47% 13F +710MSTR-1.35% 13F +526DELL+15.81% 13F +1,203CRWD-5.42% 13F +1,382ANET+2.87% 13F +1,323COIN-1.05% 13F +475

← ALL COMPANIES

MASS

Name: 908 Devices Inc. (MASS) insider trading and ownership data
Creator: WaveMan
License: https://wave-man.com/terms

908 Devices Inc.

MEDICAL DEVICES · LABORATORY ANALYTICAL INSTRUMENTS · CIK 0001555279

FORM 144 · 5☆ WATCH

INSIDER NET · 180D

-$8.1M

open-market buys minus sells, Form 4 codes P and S

INSIDER BUYERS · 180D

CONGRESS BUYERS · 1Y

FUNDS ADDED · QTR

13F, latest reported quarter

REVENUE GROWTH

+17.7%

XBRL, annual

NET MARGIN

34.7%

CONVERSIONS · 180D

codes C/M, not in net · $28.0K priced

SEVEN FACTS, RANKED AGAINST THE SECTOR · RANK IS NOT A FORECAST

INSIDERS

net -$8.1M over 180 days

-$4.1M over 90 days · -$3.7M of it by a 10%+ holder

below 82% of Medical Devices

CONGRESS

no member of Congress has reported trading it

FUNDS

60 funds added or opened last quarter

below 57% of Medical Devices

REVENUE

+17.7% year over year

more than 73% of Medical Devices

MARGIN

34.7% net margin

more than 99% of Medical Devices

BUYBACKS

no share repurchases reported

SHORT

8.2% of shares outstanding short · 11.0 days to cover · settled 2026-07-31

more than 82% of Medical Devices

THE SITUATION · EVERY LINE IS ONE RULE OVER ONE DATASET

Insiders are net sellers: -$8.1M across 6 people in 180 days.

60 funds added or opened positions in the latest 13F quarter, of 114 holders.

The year, with the filings on it

Total return indexed to 100 over the last 12 months · every marker is a federal filing, placed at its date — hover any marker for the detail

TOTAL 12M RETURN +73.9%

+73.9%12M

INSIDER SELLFORM 144

INDEXED RETURN, DIVIDEND-ADJUSTED — NOT A PRICE CHART · LARGE TRADES DRAWN FIRST WHEN A NAME FILES HEAVILY

Live price

Daily candles from TradingView, on their licence — no filings are marked on this one

WHY THIS NAME IS ON THE DESK

Insiders have filed to sell — before selling.

The record shows a net $8.1M sold by insiders over 180 days, 60 funds added last quarter, $3.3M in planned Form 144 sales. Every figure is a federal filing, dated the day it became public.

Backtest this pattern Open the screener

Same sector, ranked by filing activity

Sector from the SEC's own SIC classification

TMO PEN ROK BLFS MTD SIBN WRBY ISRG TXG DXCM EW TMDX

Insider transactions

Form 4 purchases and sales (codes P and S) — grants, option exercises and preferred conversions excluded

Over the last 180 days, 908 Devices Inc. insiders sold a net $8.1M of stock across 225 Form 4 purchases and sales, with 0 insider(s) buying. Source: SEC Form 4 filings, as of 2026-09-04.

INSIDER

FILED

VALUE

Brown Christopher D.

Director

SELL

2026-09-02

30,000.0

$317.4K

Griffith Joseph H. IV

Chief Financial Officer

SELL

2026-08-25

11,459.0

$125.5K

AWM Investment Company, Inc.

—

SELL

2026-08-21

41,578.0

$441.2K

AWM Investment Company, Inc.

—

SELL

2026-08-20

8,422.0

$88.6K

Knopp Kevin J.

President and CEO

SELL

2026-08-17

20,000.0

$207.0K

225 TRANSACTIONS ON RECORD

Showing the most recent few. Create a free account to see 220 more transactions on record, the cross-source screener and CSV export. We store only your email address, and there is no password to create.

Institutional holders

13F · holdings as of the latest quarter funds have reported

First Light Asset Management, LLC

6,282,804.0 sh

$54.7M

AWM Investment Company, Inc.

4,879,773.0 sh

$42.5M

ARK Investment Management LLC

2,027,920.0 sh

$17.6M

BlackRock, Inc.

1,944,236.0 sh

$16.9M

First Eagle Investment Management, LLC

1,859,970.0 sh

$16.2M

SCHEDULE 13D/G

No 5%+ ownership filings

Nobody has crossed 5% with a filing obligation. Absence is a fact here, not missing data.

Planned sales · Form 144

Filed before the sale — intent, not a trade

Joseph Griffith

FILED 2026-08-25

$125.1K

Kevin Knopp

FILED 2026-08-17

$205.0K

Kevin Knopp

FILED 2026-08-11

$1.3M

CHRISTOPHER BROWN

FILED 2026-08-10

$888.0K

Kevin Knopp

FILED 2026-06-23

$724.0K

Fund concentration

N-PORT · funds ranked by how much of THEMSELVES they put in this stock — the conviction number 13F cannot show

ARK Genomic Revolution ETF

$13.3M POSITION · AS OF 2026-04-30

1.1%

ACUITAS US MICROCAP FUND

$794.8K POSITION · AS OF 2026-03-31

0.8%

1290 Essex Small Cap Growth Fund

$775.6K POSITION · AS OF 2026-04-30

0.7%

State Street(R) SPDR(R) S&P Kensho Future Security ETF

$707.1K POSITION · AS OF 2026-03-31

0.7%

Needham Small Cap Growth Fund

$734.4K POSITION · AS OF 2026-03-31

0.4%

Needham Aggressive Growth Fund

$5.7M POSITION · AS OF 2026-03-31

0.4%

SEC N-PORT, MONTHLY WITH A ~60-DAY PUBLIC LAG · FUNDS ≥ $10M · % = SHARE OF THE FUND'S OWN BOOK

Fundamentals

Annual figures from XBRL filings · pick a past date to see them exactly as the market knew them then — restatements and all

	2025-12	2024-12	2023-12	2022-12
REVENUE	$56.2M	$47.7M	$50.2M	$46.9M
GROSS PROFIT	$28.4M	$24.5M	$25.3M	$26.0M
OPERATING INCOME	$-39.4M	$-57.4M	$-42.8M	$-35.4M
NET INCOME	$19.5M	$-72.2M	$-36.4M	$-33.6M
EPS (DILUTED)	0.54	-2.12	-1.13	-1.07
OPERATING CASH FLOW	$-23.7M	$-30.2M	$-25.1M	$-20.9M
CASH	$70.5M	$44.0M	$121.0M	$188.4M
LONG-TERM DEBT	—	—	—	$15.0M

SEC XBRL · FISCAL-YEAR PERIODS · AS KNOWN ON 2026-09-04 · NOBODY ELSE SHOWS FUNDAMENTALS AS OF A PAST DATE