Institutional HoldersBeta

Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.

908 Devices Inc.

CIK 0001555279MASS· quarter ending 2026-06-30

Shares outstanding

41,333,705

as of 2026-08-07 · 10-Q cover page, filed 2026-08-11

Held by 13F filers

29,000,260

70.2% of shares outstanding

Holders

111

-1 vs 2026-03-31 · 14 new, 15 exited

Value

$252.2M

shares +3.8% vs prior quarter

Share classes (cover page of the 10-Q filed 2026-08-11, as of 2026-08-07)

Class	Listed	Shares outstanding	Held by 13F filers	% of class	Holders	CUSIP
Common stock	MASS · NASDAQ	41,333,705	29,000,260	70.2%	111	65443P102

Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.

Securities (CUSIPs held in 13F this quarter)

tick to combine

Count	CUSIP	Class (as filers write it)	Holders	Shares held	Class shares	% of class	Value	Options	Mapped via
	65443P102	COM	111	29,000,260	41,333,705	70.2%	$252.2M	1 call / 0 put	13DG	holders →

Totals combine the ticked CUSIPs and update as you tick: common-stock classes by default; preferreds, notes, warrants and depositary shares are listed but not counted. "holders →" shows a single CUSIP on its own. Bonds are held as a principal amount, not shares. Options positions are never counted as holdings.

Top holders (111 of 111 · 65443P102)

change vs 2026-03-31

#	Filer	Shares	% of class	Value	Change
1	First Light Asset Management, LLC	6,282,804	15.20%	$54.7M	+210,241 (+3.5%)
2	AWM Investment Company, Inc.	4,879,773	11.81%	$42.5M	-320,151 (-6.2%)
3	ARK Investment Management LLC	2,027,920	4.91%	$17.6M	+81,235 (+4.2%)
4	BlackRock, Inc.	1,944,236	4.70%	$16.9M	+176,920 (+10.0%)
5	First Eagle Investment Management, LLC	1,859,970	4.50%	$16.2M	+1,056,364 (+131.5%)
6	NEEDHAM INVESTMENT MANAGEMENT LLC	1,820,620	4.40%	$15.8M	+580,620 (+46.8%)
7	VANGUARD CAPITAL MANAGEMENT LLC	1,291,570	3.12%	$11.2M	+172,334 (+15.4%)
8	GEODE CAPITAL MANAGEMENT, LLC	761,797	1.84%	$6.6M	+66,342 (+9.5%)
9	Granahan Investment Management, LLC	692,092	1.67%	$6.0M	-2,978 (-0.4%)
10	STATE STREET CORP	606,560	1.47%	$5.3M	-19,332 (-3.1%)
11	ESSEX INVESTMENT MANAGEMENT CO LLC	470,244	1.14%	$4.1M	-20,977 (-4.3%)
12	MORGAN STANLEY	404,078	0.98%	$3.5M	+30,820 (+8.3%)
13	Prescott Group Capital Management, L.L.C.	361,595	0.87%	$3.1M	—
14	Meros Investment Management, LP	361,368	0.87%	$3.1M	-370 (-0.1%)
15	AMERICAN CENTURY COMPANIES INC	359,848	0.87%	$3.1M	+303,954 (+543.8%)
16	HighMark Wealth Management LLC	339,783	0.82%	$3.0M	+20,433 (+6.4%)
17	NORTHERN TRUST CORP	266,417	0.64%	$2.3M	+25,085 (+10.4%)
18	BANK OF AMERICA CORP /DE/	251,027	0.61%	$2.2M	+225,949 (+901.0%)
19	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	233,892	0.57%	$2.0M	+4,403 (+1.9%)
20	Amova Asset Management Americas, Inc.	228,681	0.55%	$2.0M	-41,192 (-15.3%)
21	Sumitomo Mitsui Trust Group, Inc.	228,681	0.55%	$2.0M	-41,192 (-15.3%)
22	VANGUARD PORTFOLIO MANAGEMENT LLC	194,858	0.47%	$1.7M	+31,164 (+19.0%)
23	RENAISSANCE TECHNOLOGIES LLC	191,900	0.46%	$1.7M	-38,300 (-16.6%)
24	VANGUARD FIDUCIARY TRUST CO	186,056	0.45%	$1.6M	+5,806 (+3.2%)
25	RAYMOND JAMES FINANCIAL INC	167,348	0.40%	$1.5M	-9,172 (-5.2%)
26	Legato Capital Management LLC	158,119	0.38%	$1.4M	+4,669 (+3.0%)
27	Russell Investments Group, Ltd.	149,655	0.36%	$1.3M	+4,326 (+3.0%)
28	Nuveen, LLC	141,727	0.34%	$1.2M	+40,653 (+40.2%)
29	DIMENSIONAL FUND ADVISORS LP	124,498	0.30%	$1.1M	+5,747 (+4.8%)
30	Campbell & CO Investment Adviser LLC	111,190	0.27%	$967K	+81,534 (+274.9%)
31	Mitsubishi UFJ Asset Management Co., Ltd.	110,557	0.27%	$962K	-21,909 (-16.5%)
32	NANO CAP NEW MILLENNIUM GROWTH FUND L P	107,500	0.26%	$935K	-12,500 (-10.4%)
33	AQR CAPITAL MANAGEMENT LLC	103,909	0.25%	$904K	-497 (-0.5%)
34	IQ EQ FUND MANAGEMENT (IRELAND) Ltd	98,689	0.24%	$859K	+8,920 (+9.9%)
35	BANK OF MONTREAL /CAN/	87,346	0.21%	$760K	-29 (-0.0%)
36	SEI INVESTMENTS CO	77,719	0.19%	$676K	-87,175 (-52.9%)
37	UBS Group AG	77,416	0.19%	$674K	-16,029 (-17.2%)
38	GOLDMAN SACHS GROUP INC	76,230	0.18%	$663K	-34,982 (-31.5%)
39	D. E. Shaw & Co., Inc.	75,446	0.18%	$656K	NEW
40	Bank of New York Mellon Corp	72,758	0.18%	$633K	+13,717 (+23.2%)
41	ACADIAN ASSET MANAGEMENT LLC	70,374	0.17%	$609K	NEW
42	Bruce & Co., Inc.	68,286	0.17%	$594K	—
43	CITADEL ADVISORS LLC	62,747	0.15%	$546K	-81,800 (-56.6%)
44	LPL Financial LLC	55,451	0.13%	$482K	-12,338 (-18.2%)
45	BRIDGEWAY CAPITAL MANAGEMENT, LLC	50,500	0.12%	$439K	—
46	GSA CAPITAL PARTNERS LLP	49,160	0.12%	$428K	-201,868 (-80.4%)
47	ALLIANCEBERNSTEIN L.P.	39,550	0.10%	$242K	+6,400 (+19.3%)
48	Old Port Advisors	38,629	0.09%	$336K	—
49	Squarepoint Ops LLC	37,739	0.09%	$328K	-175,454 (-82.3%)
50	RHUMBLINE ADVISERS	36,791	0.09%	$320K	+2,241 (+6.5%)
51	Quantinno Capital Management LP	31,131	0.08%	$271K	+7,406 (+31.2%)
52	DEUTSCHE BANK AG\	28,412	0.07%	$247K	+9,983 (+54.2%)
53	STATE OF WISCONSIN INVESTMENT BOARD	27,170	0.07%	$236K	+972 (+3.7%)
54	WELLS FARGO & COMPANY/MN	24,372	0.06%	$212K	+13,892 (+132.6%)
55	SUSQUEHANNA INTERNATIONAL GROUP, LLP	23,374	0.06%	$203K	-10,467 (-30.9%)
56	Brevan Howard Capital Management LP	20,692	0.05%	$180K	NEW
57	PRICE T ROWE ASSOCIATES INC /MD/	20,387	0.05%	$178K	+1,002 (+5.2%)
58	FMR LLC	19,399	0.05%	$169K	+8,856 (+84.0%)
59	MetLife Investment Management, LLC	17,292	0.04%	$150K	+270 (+1.6%)
60	Cresset Asset Management, LLC	16,343	0.04%	$142K	—
61	Invesco Ltd.	14,960	0.04%	$130K	+832 (+5.9%)
62	Graham Capital Management, L.P.	14,827	0.04%	$129K	+1,580 (+11.9%)
63	PIER 88 INVESTMENT PARTNERS LLC	14,200	0.03%	$124K	NEW
64	Magnetar Financial LLC	13,815	0.03%	$120K	NEW
65	CITIGROUP INC	13,429	0.03%	$117K	+12,000 (+839.7%)
66	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	13,401	0.03%	$117K	+373 (+2.9%)
67	JPMORGAN CHASE & CO	12,559	0.03%	$111K	+1,259 (+11.1%)
68	GAINLINE FINANCIAL PARTNERS, LLC	12,338	0.03%	$107K	NEW
69	Advyzon Investment Management, LLC	12,338	0.03%	$107K	NEW
70	OCCUDO QUANTITATIVE STRATEGIES LP	12,256	0.03%	$107K	NEW
71	Concurrent Investment Advisors, LLC	11,903	0.03%	$104K	—
72	PCM Encore, LLC	11,830	0.03%	$103K	—
73	JANE STREET GROUP, LLC	11,445	0.03%	$100K	-2,856 (-20.0%)
74	WEALTH ENHANCEMENT ADVISORY SERVICES, LLC	11,325	0.03%	$92K	NEW
75	Schonfeld Strategic Advisors LLC	11,134	0.03%	$97K	NEW
76	AXQ CAPITAL, LP	10,704	0.03%	$93K	NEW
77	Vanguard Global Advisers, LLC	10,286	0.02%	$89K	—
78	Police & Firemen's Retirement System of New Jersey	8,523	0.02%	$74K	—
79	NEW YORK STATE COMMON RETIREMENT FUND	8,487	0.02%	$74K	—
80	OSAIC HOLDINGS, INC.	5,625	0.01%	$49K	+525 (+10.3%)
81	BARCLAYS PLC	5,106	0.01%	$44K	+128 (+2.6%)
82	BNP PARIBAS FINANCIAL MARKETS	4,362	0.01%	$38K	-1,583 (-26.6%)
83	Pinnacle Wealth Planning Services, Inc.	4,180	0.01%	$36K	—
84	ROYAL BANK OF CANADA	4,175	0.01%	$37K	+3,757 (+898.8%)
85	ANTIPODES PARTNERS Ltd	3,994	0.01%	$35K	-408 (-9.3%)
86	Allworth Financial LP	3,373	0.01%	$29K	-1,976 (-36.9%)
87	Legal & General Group Plc	3,049	0.01%	$27K	+557 (+22.4%)
88	Ameritas Investment Partners, Inc.	2,795	0.01%	$24K	—
89	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	1,536	0.00%	$13K	—
90	SIGNATUREFD, LLC	1,447	0.00%	$13K	-519 (-26.4%)
91	Tower Research Capital LLC (TRC)	1,134	0.00%	$10K	-3,006 (-72.6%)
92	Versant Capital Management, Inc	1,070	0.00%	$9K	—
93	NISA INVESTMENT ADVISORS, LLC	684	0.00%	$6K	—
94	GAMMA Investing LLC	668	0.00%	$6K	+62 (+10.2%)
95	Parallel Advisors, LLC	634	0.00%	$6K	-1,303 (-67.3%)
96	Sterling Capital Management LLC	587	0.00%	$5K	+239 (+68.7%)
97	FEDERATED HERMES, INC.	510	0.00%	$4K	+150 (+41.7%)
98	Arax Advisory Partners	405	0.00%	$4K	NEW
99	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	389	0.00%	$3K	-1,093 (-73.8%)
100	SUMMIT SECURITIES GROUP LLC	229	0.00%	$2K	NEW
101	Essential Partners LLC	218	0.00%	$2K	—
102	Farther Finance Advisors, LLC	203	0.00%	$2K	-190 (-48.3%)
103	PNC Financial Services Group, Inc.	151	0.00%	$1K	-5 (-3.2%)
104	Cornerstone Financial Management LLC	129	0.00%	$1K	—
105	EverSource Wealth Advisors, LLC	109	0.00%	$948	-21 (-16.2%)
106	SJS Investment Consulting Inc.	26	0.00%	$227	NEW
107	True Wealth Design, LLC	18	0.00%	$157	-11 (-37.9%)
108	FNY Investment Advisers, LLC	10	0.00%	$0	-40 (-80.0%)
109	Caitong International Asset Management Co., Ltd	3	0.00%	$26	-1 (-25.0%)
110	SBI Securities Co., Ltd.	3	0.00%	$26	—
111	Optiver Holding B.V.	2	0.00%	$17	-280 (-99.3%)

Exited since 2026-03-31 (15 filers; largest 15 shown)

Tao Capital Management LP	−568,981
GM Advisory Group, LLC	−238,218
MILLENNIUM MANAGEMENT LLC	−142,422
Trexquant Investment LP	−73,194
Cassaday & Co Wealth Management LLC	−71,629
Brooklyn Investment Group	−46,259
TWO SIGMA INVESTMENTS, LP	−44,127
XTX Topco Ltd	−41,365
49 WEALTH MANAGEMENT, LLC	−17,101
Dynamic Technology Lab Private Ltd	−13,898
Intelligence Driven Advisers, LLC	−10,000
CWM, LLC	−6,594
GROUP ONE TRADING LLC	−202
JONES FINANCIAL COMPANIES LLLP	−100
Sunbelt Securities, Inc.	−22

Large holders from 13D/13G (latest per reporting person, last 2 years)

Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.

Reporting person	Form	Filed	Event	Shares	% of class
Clinton Bybee	SCHEDULE 13G/A	2026-08-14	2026-06-30	5,725,045	13.9%
Robert Nelsen	SCHEDULE 13G/A	2026-08-14	2026-06-30	5,725,045	13.9%
ARCH Venture Partners VII, LLC	SCHEDULE 13G/A	2026-08-14	2026-06-30	5,725,045	13.9%
ARCH Venture Partners VII, L.P.	SCHEDULE 13G/A	2026-08-14	2026-06-30	5,725,045	13.9%
ARK Investment Management LLC	SCHEDULE 13G/A	2026-08-14	2026-06-30	2,027,920	5.32%
AWM Investment Company, Inc.	SCHEDULE 13G/A	2026-08-14	2026-06-30	4,879,773	11.8%
Keith Crandell	SCHEDULE 13G/A	2026-08-14	2026-06-30	5,824,877	14.1%
Catherine D. Wood	SCHEDULE 13G/A	2026-08-14	2026-06-30	2,027,920	5.32%
ARCH Venture Fund VII, L.P.	SCHEDULE 13G/A	2026-08-14	2026-06-30	5,725,045	13.9%
BlackRock, Inc.	SCHEDULE 13G	2026-07-27	2026-06-30	1,940,690	5.1%
Mathew P. Arens	SCHEDULE 13G/A	2026-02-17	2025-12-31	6,184,739	17.09%
First Light Asset Management, LLC	SCHEDULE 13G/A	2026-02-17	2025-12-31	5,964,739	16.48%
SSGA FUNDS MANAGEMENT, INC.	SCHEDULE 13G	2026-02-09	2025-12-31	134,786	0.4%
STATE STREET CORPORATION	SCHEDULE 13G	2026-02-09	2025-12-31	596,294	1.6%
Columbia Management Investment Advisers, LLC	SCHEDULE 13G/A	2025-05-15	2025-03-31	316	0%
Ameriprise Financial, Inc.	SCHEDULE 13G/A	2025-05-15	2025-03-31	316	0%
The Vanguard Group	SCHEDULE 13G/A	2025-01-30	2024-12-31	1,324,534	3.8%

Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.