Separate the three disclosure sources
Recent Form 4 activity
908 Devices Inc. Common Stock: source evidence dated 2026-10-10T12:08:28.848Z.
- Available
- 2026-10-09
- Trade date
- 2026-10-07
- Reporting owners
- Brown Christopher D.
- Code
- S
- Shares
- 30,000
- Reported value
- Not reported
The displayed owner or issuer and source fields identify the receipt to verify; keep reporting and availability dates separate.
Is this an insider transaction, 13F holding, or Congressional event?
Each source has different dates and units. Raw ticker-matched receipts, including amendments, are not deduplicated current ownership totals.
SEC 0001836988-26-000027Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.
Read MASS fundamentals
Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.
Read MASS fundamentalsKeep reporting dates and units beside the answer, and inspect its original citations.
Recent Form 4 activity
See the complete recent form 4 activity
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| 2026-10-09 | 2026-10-07 | Brown Christopher D. | S | 30,000 | Not reported |
| 2026-10-08 | 2026-10-06 | Griffith Joseph H. IV | S | 5,000 | Not reported |
| 2026-10-01 | 2026-09-29 | AWM Investment Company, Inc. | S | 18,000 | Not reported |
| 2026-09-25 | 2026-09-24 | AWM Investment Company, Inc. | S | 24,000 | Not reported |
| 2026-09-25 | 2026-09-23 | AWM Investment Company, Inc. | S | 1,000 | Not reported |
| 2026-09-17 | 2026-09-17 | Kenneweg John | S | 5,257 | Not reported |
| 2026-09-17 | 2026-09-16 | Kenneweg John | S | 21,399 | Not reported |
| 2026-09-17 | 2026-09-15 | Kenneweg John | S | 1,000 | Not reported |
| 2026-09-05 | 2026-09-02 | Brown Christopher D. | S | 30,000 | Not reported |
| 2026-08-28 | 2026-08-25 | Griffith Joseph H. IV | S | 11,459 | Not reported |
| 2026-08-25 | 2026-08-21 | AWM Investment Company, Inc. | S | 41,578 | Not reported |
| 2026-08-25 | 2026-08-20 | AWM Investment Company, Inc. | S | 8,422 | Not reported |
| 2026-08-18 | 2026-08-17 | Knopp Kevin J. | S | 20,000 | Not reported |
| 2026-08-18 | 2026-08-13 | Knopp Kevin J. | S | 7,622 | Not reported |
| 2026-08-13 | 2026-08-11 | Brown Christopher D. | S | 8,358 | Not reported |
| 2026-08-13 | 2026-08-10 | Brown Christopher D. | S | 9,442 | Not reported |
| 2026-08-13 | 2026-08-12 | Knopp Kevin J. | S | 2,747 | Not reported |
| 2026-08-13 | 2026-08-11 | Knopp Kevin J. | S | 30,170 | Not reported |
| 2026-08-13 | 2026-08-11 | Knopp Kevin J. | S | 115,748 | Not reported |
| 2026-08-13 | 2026-08-10 | Knopp Kevin J. | S | 348 | Not reported |
| 2026-08-08 | 2026-08-05 | Brown Christopher D. | S | 20,000 | Not reported |
| 2026-08-07 | 2026-08-04 | AWM Investment Company, Inc. | S | 50,000 | Not reported |
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90-day public availability window, up to 50 records.
Recent institutional filing receipts
These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.
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| Cornerstone Financial Management LLC | 2026-06-30 | 2026-08-29 | 129 | $1,122 | None |
| Cornerstone Financial Management LLC | 2026-03-31 | 2026-08-29 | 129 | $789 | None |
| Cornerstone Financial Management LLC | 2025-12-31 | 2026-08-29 | 129 | $677 | None |
| First Eagle Investment Management, LLC | 2026-06-30 | 2026-08-25 | 929,985 | $8,090,870 | None |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | 2026-06-30 | 2026-08-25 | 389 | $3,384 | None |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | 2026-06-30 | 2026-08-25 | 3,384 | $389,000 | None |
| Graham Capital Management, L.P. | 2026-06-30 | 2026-08-15 | 14,827 | $128,995 | None |
| SEI INVESTMENTS CO | 2026-06-30 | 2026-08-15 | 77,719 | $676,155 | None |
| First Light Asset Management, LLC | 2026-06-30 | 2026-08-15 | 6,282,804 | $54,660,395 | None |
| Advyzon Investment Management, LLC | 2026-06-30 | 2026-08-15 | 12,338 | $107,341 | None |
| Meros Investment Management, LP | 2026-06-30 | 2026-08-15 | 361,368 | $3,143,902 | None |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 2026-06-30 | 2026-08-15 | 233,892 | $2,034,860 | None |
| Sixth Street Partners Management Company, L.P. | 2026-06-30 | 2026-08-15 | 233,892 | $2,034,860 | None |
| OSAIC HOLDINGS, INC. | 2026-06-30 | 2026-08-15 | 5,625 | $48,937 | None |
| Schonfeld Strategic Advisors LLC | 2026-06-30 | 2026-08-15 | 11,134 | $96,864 | None |
| Squarepoint Ops LLC | 2026-06-30 | 2026-08-15 | 37,739 | $328,329 | None |
| MetLife Investment Management, LLC | 2026-06-30 | 2026-08-15 | 17,292 | $150,440 | None |
| JANE STREET GROUP, LLC | 2026-06-30 | 2026-08-15 | 2,069 | $18,000 | None |
| JANE STREET GROUP, LLC | 2026-06-30 | 2026-08-15 | 9,376 | $81,571 | None |
| AWM Investment Company, Inc. | 2026-06-30 | 2026-08-15 | 4,879,773 | $42,454,025 | None |
| Legal & General Group Plc | 2026-06-30 | 2026-08-15 | 3,049 | $26,526 | None |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 2026-06-30 | 2026-08-15 | 89,400 | $777,780 | Call |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 2026-06-30 | 2026-08-15 | 23,374 | $203,354 | None |
| Granahan Investment Management, LLC | 2026-06-30 | 2026-08-15 | 692,092 | $6,021,200 | None |
| NANO CAP NEW MILLENNIUM GROWTH FUND L P | 2026-06-30 | 2026-08-15 | 107,500 | $935,250 | None |
| Cresset Asset Management, LLC | 2026-06-30 | 2026-08-15 | 16,343 | $142,184 | None |
| AQR CAPITAL MANAGEMENT LLC | 2026-06-30 | 2026-08-15 | 1,384 | $12,041 | None |
| AQR CAPITAL MANAGEMENT LLC | 2026-06-30 | 2026-08-15 | 379 | $3,297 | None |
| AQR CAPITAL MANAGEMENT LLC | 2026-06-30 | 2026-08-15 | 101,970 | $887,139 | None |
| AQR CAPITAL MANAGEMENT LLC | 2026-06-30 | 2026-08-15 | 176 | $1,531 | None |
| ROYAL BANK OF CANADA | 2026-06-30 | 2026-08-15 | 3,306 | $29,000 | None |
| ROYAL BANK OF CANADA | 2026-06-30 | 2026-08-15 | 868 | $8,000 | None |
| ALLIANCEBERNSTEIN L.P. | 2026-06-30 | 2026-08-15 | 39,550 | $242,046 | None |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 2026-06-30 | 2026-08-15 | 50,500 | $439,350 | None |
| D. E. Shaw & Co., Inc. | 2026-06-30 | 2026-08-15 | 75,446 | $656,380 | None |
| CITADEL ADVISORS LLC | 2026-06-30 | 2026-08-15 | 62,747 | $545,899 | None |
| ARK Investment Management LLC | 2026-06-30 | 2026-08-15 | 2,027,920 | $17,642,905 | None |
| Bruce & Co., Inc. | 2026-06-30 | 2026-08-15 | 68,286 | $594,088 | None |
| Magnetar Financial LLC | 2026-06-30 | 2026-08-15 | 8,218 | $71,497 | None |
| Magnetar Financial LLC | 2026-06-30 | 2026-08-15 | 5,597 | $48,694 | None |
| STATE OF WISCONSIN INVESTMENT BOARD | 2026-06-30 | 2026-08-15 | 27,170 | $236,379 | None |
| NEEDHAM INVESTMENT MANAGEMENT LLC | 2026-06-30 | 2026-08-15 | 50,000 | $435,000 | None |
| NEEDHAM INVESTMENT MANAGEMENT LLC | 2026-06-30 | 2026-08-15 | 1,397,650 | $12,159,555 | None |
| NEEDHAM INVESTMENT MANAGEMENT LLC | 2026-06-30 | 2026-08-15 | 252,970 | $2,200,839 | None |
| NEEDHAM INVESTMENT MANAGEMENT LLC | 2026-06-30 | 2026-08-15 | 120,000 | $1,044,000 | None |
| Invesco Ltd. | 2026-06-30 | 2026-08-15 | 636 | $5,533 | None |
| Invesco Ltd. | 2026-06-30 | 2026-08-15 | 3,536 | $30,763 | None |
| Invesco Ltd. | 2026-06-30 | 2026-08-15 | 10,788 | $93,856 | None |
| Brevan Howard Capital Management LP | 2026-06-30 | 2026-08-15 | 20,692 | $180,020 | None |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 2026-06-30 | 2026-08-15 | 13,401 | $116,589 | None |
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90-day public filing window, up to 50 source positions.
Recent Congressional disclosures
No matching Congressional transactions were returned in this source preview.
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Bounded public source preview, up to 25 disclosed events.
How to read the disclosure dates
The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.
Company insiders
SEC Form 4 purchases, sales and awards report transactions and their public filing availability.
Institutional managers
13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.
Congressional filers
Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.
Read the transaction codes
Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.