Disclosure profile
Who’s trading MASS?
Open MASS on Robinhood908 Devices Inc.
Every disclosed Congress and corporate-insider transaction in MASS (908 Devices Inc.): 42 trades from 13 politicians and executives, each AI-scored. Updated as new filings land.
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AWM Investment Company, Inc.SEC Form 4Sell$273k2026-09-253
Kenneweg JohnSEC Form 4—$54k2026-09-175
908 Devices Inc. (MASS) (CIK 0001555279)SEC Form 144Buy$269k2026-09-154
Brown Christopher D.SEC Form 4Sell$317k2026-09-043
Griffith Joseph H. IVSEC Form 4Sell$126k2026-08-273
908 Devices Inc. (MASS) (CIK 0001555279)SEC Form 144Buy$125k2026-08-255
AWM Investment Company, Inc.SEC Form 4Sell$528k2026-08-243
Knopp Kevin J.SEC Form 4Sell$207k2026-08-173
908 Devices Inc. (MASS) (CIK 0001555279)SEC Form 144Buy$205k2026-08-176
908 Devices Inc. (MASS) (CIK 0001555279)SEC 13GSell—2026-08-144
908 Devices Inc. (MASS) (CIK 0001555279)SEC 13GSell—2026-08-143
Knopp Kevin J.SEC Form 4Sell$1.1M2026-08-123
Brown Christopher D.SEC Form 4Sell$85k2026-08-124
908 Devices Inc. (MASS) (CIK 0001555279)SEC Form 144Buy$1.3M2026-08-116
908 Devices Inc. (MASS) (CIK 0001555279)SEC Form 144Buy$888k2026-08-106
Brown Christopher D.SEC Form 4Sell$170k2026-08-073
AWM Investment Company, Inc.SEC Form 4Sell$418k2026-08-063
Vann Brandi CSEC Form 4——2026-08-034
Knopp Kevin J.SEC Form 4Sell$2k2026-07-073
Brown Christopher D.SEC Form 4Sell$20k2026-07-073
Brown Christopher D.SEC Form 4Sell$177k2026-07-024
Knopp Kevin J.SEC Form 4Sell$25k2026-06-304
Knopp Kevin J.SEC Form 4Sell$150k2026-06-254
Brown Christopher D.SEC Form 4Sell$90k2026-06-254
Leonhart Michele M.SEC Form 4——2026-06-255
AWM Investment Company, Inc.SEC Form 4Sell$42k2026-06-243
Vann Brandi CSEC Form 4——2026-06-126
CRANDELL KEITHSEC Form 4——2026-06-126
ELOI FENEL MSEC Form 4——2026-06-126
HRUSOVSKY E KEVINSEC Form 4——2026-06-127
Hunt AnthonySEC Form 4——2026-06-125
Spoto MarkSEC Form 4——2026-06-125
Leonhart Michele M.SEC Form 4——2026-06-126
Brown Christopher D.SEC Form 4Sell—2026-06-053
AWM Investment Company, Inc.SEC Form 4Sell—2026-06-043
Brown Christopher D.SEC Form 4Sell—2026-06-043
AWM Investment Company, Inc.SEC Form 4Sell—2026-05-293
Brown Christopher D.SEC Form 4Sell—2026-05-295
Griffith Joseph H. IVSEC Form 4Sell—2026-05-294
Kenneweg JohnSEC Form 4Sell—2026-05-116
Kenneweg JohnSEC Form 4——2026-05-042
Kenneweg JohnSEC Form 4——2026-04-295
Public-record disclosures (SEC Form 4 & Congressional PTRs). Research tool, not investment advice.