AWM Investment Company, Inc. 4

What Happened AWM Investment Company, Inc., the investment adviser that holds voting/investment power over multiple Special Situations funds (a reported 5,121,715 shares across those funds per the filing), reported open-market sales of 78,209 shares of 908 Devices (MASS) between May 6 and May 8, 2026. The trades were: 5,000 shares @ $8.00 (≈ $40,000) and 57,365 shares @ $8.06 (≈ $462,155) on May 6; 12,819 shares @ $8.20 (≈ $105,170) on May 7; and 3,025 shares @ $8.20 (≈ $24,805) on May 8 — total proceeds about $632,130. These were sales (not purchases or option exercises), which are commonly portfolio/investment management actions for institutional holders.

Key Details

• Transaction dates and prices:
  • 2026-05-06: 5,000 @ $8.00 (≈ $40,000) and 57,365 @ $8.06 (≈ $462,155; price reported as a weighted average per footnote)
  • 2026-05-07: 12,819 @ $8.20 (≈ $105,170)
  • 2026-05-08: 3,025 @ $8.20 (≈ $24,805)
• Total shares sold: 78,209; total reported proceeds ≈ $632,130.
• Reported holdings: Footnote F2 states AWM (as adviser) has sole voting and investment power over 5,121,715 shares held across five Special Situations funds. Subtracting these sales implies roughly 5,043,506 shares remain under AWM’s reported control (assuming the F2 totals reflected holdings before these trades).
• Footnotes: F1 = reported price is a weighted average; F2 = AWM is adviser to multiple funds and lists share counts by fund; F3 names AWM’s controlling principals (David M. Greenhouse and Adam C. Stettner) and includes a disclaimer about beneficial ownership.
• Filing timeliness: Report filed May 8, 2026. Transactions occurred May 6–8; the filing appears timely (within the usual two-business-day requirement).

Context

• This filing reports institutional sales by a 10% owner/adviser, not insider trading by an individual executive. Institutional sales can reflect portfolio rebalancing or liquidity needs and do not necessarily indicate negative company-specific news.
• The amount sold is a small portion (~1.5%) of the shares AWM reports controlling across its funds, so the transactions are relatively modest versus the adviser’s total position.