AWM Investment Company, Inc. 4

What Happened

• AWM Investment Company, Inc. (the investment adviser and 10% owner) disposed of 42,282 shares of 908 Devices common stock in two open-market sales. On 2026-06-02 it sold 2,500 shares at $8.95 ($22,375) and on 2026-06-04 it sold 39,782 shares at $8.97 ($356,856), for total proceeds of about $379,231. These were sales (dispositions), which are often routine portfolio/investment-manager transactions rather than a signal of insider bullishness.

Key Details

• Transaction dates and prices:
  • 2026-06-02: 2,500 shares @ $8.95 = $22,375
  • 2026-06-04: 39,782 shares @ $8.97 = $356,856
  • Footnote notes the prices are weighted-average prices.
• Shares owned after transaction: According to the filing footnote, AWM reported sole voting and investment power over 4,887,491 shares across its managed funds; after these dispositions that holding is approximately 4,845,209 shares (4,887,491 − 42,282).
• Notable footnotes:
  • F2: AWM is the adviser to multiple funds (SSFQP, CAY, SSPE, TECH, TECH II) that collectively hold the shares.
  • F3: David M. Greenhouse and Adam C. Stettner are AWM’s controlling principals; AWM disclaims beneficial ownership except to the extent of its pecuniary interest.
• Filing timeliness: Report filed 2026-06-04 for transactions on 2026-06-02 and 2026-06-04 — no late-filing indication.

Context

• This is institutional selling by an investment adviser of a 10% owner (not direct executive insider trading). Such dispositions commonly reflect fund rebalancing or other portfolio management activity rather than personal trading by company executives.