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Insider Cluster (3 insiders) ·Filed May 1, 2026

MASS

908 Devices Inc.
NEUTRAL
Impact 3/10
Horizondays Processed5mo ago
Insider cluster: 3 insiders, $0.2M total
Actionable Insight • Neutral

Cluster is too small to warrant a directional signal. However, if further insider selling accelerates to >0.5% of market cap in coming weeks, it could indicate management selling into the post-acquisition rally. Monitor upcoming regulatory filings for additional sales.

DirectionNeutral
Confidencehigh
Horizondays
Final — all horizons settled through T+60d
MASS ▲ +3.23% at T+60d
NEUTRAL call +3.23% · α vs SPY +0.16% · entry $6.81 → $7.03
Entry = T+0 close
Apr 30, 2026
via day close
T+1d
-3.82%
call -3.82% · α -3.48%
$6.55
settled 6mo ago
T+5d
+19.97%
call +19.97% · α +17.62%
$8.17
settled 6mo ago
T+20d
+26.73%
call +26.73% · α +21.44%
$8.63
settled 5mo ago
T+60d
+3.23%
call +3.23% · α +0.16%
$7.03
settled 3mo ago

Price Chart

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Executive Summary

Three insiders at 908 Devices sold a total of $238K in open-market sales over the past week, representing only 0.08% of market cap. The sales occurred just after the company reported strong Q1 2026 results and closed the NIRLAB acquisition. However, the dollar amount is trivial relative to company size and likely reflects routine portfolio adjustments.

Key Financial Metrics

Direction
selling
Total Value
$238.0K
Insiders
3

Key Facts

  • Total insider sales of $238K (0.08% of $303M market cap)
  • Three insiders: AWM Investment (10% Owner), John Kenneweg (SVP), Christopher Brown (Director)
  • Sales occurred May 1-8, 2026, following Q1 earnings beat and NIRLAB acquisition
  • Prior 30-day insider activity: $492K in sales (6 transactions)

Financial Impact

Trivial — $238K represents less than 0.1% of market cap

Risk Factors

  • Insider selling may increase following the recent stock price bump from Q1 results
  • Small sample size (3 insiders) limits signal reliability

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-1778272872290
23 reports for MASS
Performance horizon
42% Hit rate @ T+5 5 of 12 directional calls Went positive at some point 9 of 12 best @ T+60▲ +12.41%Jun 13, 2026
Filters
Rows
Reports for MASS — sortable, filterable
TypeNow
Oct 6, 2026
21d ago
144
NEUTRAL ★ 2/10
$11.78 $11.83▲ +0.42%▲ +1.40%$12.36 (+4.92%)
Sep 25, 2026
4w ago
Insider Cluster
BEARISH ★ 4/10
$11.66 $12.80▼ −9.78%▼ −8.57%$12.36 (−6.00%)
Aug 27, 2026
8w ago
Insider Cluster
NEUTRAL ★ 4/10
$10.73 $10.05▼ −6.34%▼ −6.45%$12.36 (+15.19%)
Aug 17, 2026
10w ago
Insider Cluster
BEARISH ★ 4/10
$10.08 $11.00▼ −9.13%▼ −9.33%$12.36 (−22.62%)
Aug 12, 2026
10w ago
Insider Cluster
BEARISH ★ 5/10
$10.11 $10.35▼ −2.37%▼ −4.34%$12.36 (−22.26%)
Aug 11, 2026
11w ago
8-K
BULLISH ★ 6/10
$10.01 $10.08▲ +0.70%▲ +1.10%$12.36 (+23.48%)
Aug 7, 2026
11w ago
Insider Cluster
NEUTRAL ★ 4/10
$8.80 $10.19▲ +15.80%▲ +15.84%$12.36 (+40.45%)
Jul 7, 2026
16w ago
Insider Cluster
NEUTRAL ★ 2/10
$7.88 $8.05▲ +2.16%▲ +0.90%$12.36 (+56.85%)
Jul 2, 2026
16w ago
Insider Cluster
NEUTRAL ★ 3/10
$8.42 $7.95▼ −5.58%▼ −5.30%$12.36 (+46.79%)
Jun 13, 2026
19w ago
Institutional Cluster
BULLISH ★ 5/10
$8.62 $8.66▲ +0.46%▲ +1.85%$12.36 (+43.39%)
Showing 10 of 23

US Market Status

Market Closed — Opens Wed (< 1m)

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Report published May 8, 2026