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Insider Cluster (3 insiders) ·Filed Jun 4, 2026

MASS

908 Devices Inc.
BEARISH
Impact 4/10
Horizondays Processed4mo ago
Insider cluster: 3 insiders, $0.6M total
Actionable Insight ▼ Bearish

The selling cluster is modest in size but notable for being exclusively selling with CFO participation. Monitor for any upcoming earnings or material news that could explain the coordinated selling.

DirectionBearish
Confidencemedium
Horizondays
Final — all horizons settled through T+60d ⚠ clustered
MASS ▲ +34.55% at T+60d
SHORT call ✗ call lost -34.55% · α vs SPY -30.55% · entry $7.93 → $10.67
Entry = T+0 close
Jun 4, 2026
via day close
T+1d
+2.14%
call -2.14% · α -1.92%
$8.10
settled 5mo ago
T+5d
+4.29%
call -4.29% · α -3.72%
$8.27
settled 5mo ago
T+20d
+6.18%
call -6.18% · α -4.32%
$8.42
settled 4mo ago
T+60d
+34.55%
call -34.55% · α -30.55%
$10.67
settled 8w ago

Price Chart

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Executive Summary

Three insiders at 908 Devices (MASS) sold a total of $594K in open-market sales over a 7-day window, including the CFO, a director, and a 10% owner. The total represents 0.18% of the $327M market cap, falling in the modest range. The cluster is selling-only with no buys, and the CFO's sale is notable given his position, but the dollar amount is not material relative to company size.

Key Financial Metrics

Direction
selling
Total Value
$594.0K
Insiders
3

Key Facts

  • Three insiders sold shares in open-market transactions totaling $594K from May 28 to June 4, 2026.
  • CFO Joseph H. Griffith IV sold 6,900 shares at $9.03 for $63K.
  • 10% owner AWM Investment Company sold 42,282 shares combined ($379K).
  • Director Christopher D. Brown sold 20,000 shares at $8.73 for $175K.
  • Total sales represent 0.18% of the $327M market cap — modest but not trivial.
  • No insider purchases occurred in the cluster window.

Financial Impact

Total insider sales of $594K, representing 0.18% of market cap.

insider ownershipmarket sentiment

Risk Factors

  • Insider selling may signal lack of confidence in near-term prospects.
  • CFO selling, even small, can be interpreted negatively by the market.
  • No insider buying to offset the selling cluster.

Market Snapshot

Exchange
Nasdaq
Sector
Measuring & Controlling Devices, NEC
Analyst Consensus
90% bullish (10 analysts)

Investment Themes

Industrials & Manufacturing

Documents Analyzed

This report is based on 1 SEC document filed with EDGAR.

DocumentAccession Number
CLUSTER Data (Synthetic)cluster-MASS-1780605856875
23 reports for MASS
Performance horizon
45% Hit rate @ T+5 5 of 11 directional calls Went positive at some point 8 of 11 best @ T+60▲ +12.41%Jun 13, 2026
Filters
Rows
Reports for MASS — sortable, filterable
TypeNow
Oct 6, 2026
20d ago
144
NEUTRAL ★ 2/10
$11.78 $11.83▲ +0.42%▲ +1.40%$11.65 (−1.10%)
Sep 25, 2026
4w ago
Insider Cluster
BEARISH ★ 4/10
$11.66 $12.80▼ −9.78%▼ −8.57%$11.65 (+0.09%)
Aug 27, 2026
8w ago
Insider Cluster
NEUTRAL ★ 4/10
$10.73 $10.05▼ −6.34%▼ −6.45%$11.65 (+8.57%)
Aug 17, 2026
9w ago
Insider Cluster
BEARISH ★ 4/10
$10.08 $11.00▼ −9.13%▼ −9.33%$11.65 (−15.58%)
Aug 12, 2026
10w ago
Insider Cluster
BEARISH ★ 5/10
$10.11 $10.35▼ −2.37%▼ −4.34%$11.65 (−15.23%)
Aug 11, 2026
10w ago
8-K
BULLISH ★ 6/10
$10.01 $10.08▲ +0.70%▲ +1.10%$11.65 (+16.38%)
Aug 7, 2026
11w ago
Insider Cluster
NEUTRAL ★ 4/10
$8.80 $10.19▲ +15.80%▲ +15.84%$11.65 (+32.39%)
Jul 7, 2026
15w ago
Insider Cluster
NEUTRAL ★ 2/10
$7.88 $8.05▲ +2.16%▲ +0.90%$11.65 (+47.84%)
Jul 2, 2026
16w ago
Insider Cluster
NEUTRAL ★ 3/10
$8.42 $7.95▼ −5.58%▼ −5.30%$11.65 (+38.36%)
Jun 13, 2026
19w ago
Institutional Cluster
BULLISH ★ 5/10
$8.62 $8.66▲ +0.46%▲ +1.85%$11.65 (+35.15%)
Showing 10 of 23

US Market Status

Market Closed — Opens Tue (16h 41m)

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Report published Jun 4, 2026