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Insider Cluster (2 insiders) ·Filed Aug 17, 2026

MASS

908 Devices Inc.
BEARISH
Impact 4/10
Horizondays Processed2mo ago
Insider cluster: 2 insiders, $154K total
Actionable Insight ▼ Bearish

The cluster is small in dollar terms, but the CEO's post-earnings selling is a cautionary signal. The stock may face selling pressure in the near term as the market digests insiders cashing out after strong results.

DirectionBearish
Confidencemedium
Horizondays
Latest settled — T+20d
MASS ▼ -1.59% at T+20d
SHORT call ✓ call won +1.59% · α vs SPY -0.16% · entry $10.08 → $9.92
Next anchor: T+60d in 14d
Latest observation: T+47 -11.11% FF3 residual α
Entry = T+0 close
Aug 17, 2026
via day close
T+1d
+1.59%
call -1.59% · α -1.38%
$10.24
settled 2mo ago
T+5d
+9.13%
call -9.13% · α -9.33%
$11.00
settled 2mo ago
T+20d
-1.59%
call +1.59% · α -0.16%
$9.92
settled 6w ago
T+60d
Pending
in 14d

Price Chart

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Executive Summary

908 Devices (MASS) saw a 2-insider selling cluster totaling $154K, led by CEO Kevin Knopp, who sold ~30K shares for $311K across two separate filings. These sales come just 1-6 days after the company reported a strong Q2 2026 earnings beat ($16.1M revenue, +23% YoY) and raised full-year guidance. While the absolute dollar value is modest vs. the $414M market cap (0.04%), the CEO's open-market sales immediately following a bullish earnings release create a bearish signal of insiders monetizing the positive news.

Key Financial Metrics

Direction
selling
Total Value
$154.0K
Insiders
2

Key Facts

  • CEO Kevin Knopp sold 30,369 shares between Aug 12-17, 2026, at ~$10.07-$10.35, totaling ~$311K.
  • Director Christopher D. Brown sold 8,400 shares on Aug 11 at $9.23, totaling ~$78K.
  • Sales occurred 1-6 days after a bullish Q2 2026 report (revenue $16.1M, +23% YoY, raised FY guidance).
  • Cluster-to-market-cap ratio is 0.04% ($154K / $414M), below the 0.1% materiality threshold.

Financial Impact

Total insider selling of $311K by CEO and $78K by director is 0.09% of market cap — below materiality threshold.

insider sentiment

Risk Factors

  • CEO's post-earnings sales may signal a belief the stock is fully valued or that near-term headwinds exist.
  • The cluster's dollar value is too small to drive significant price action on its own.

Market Snapshot

Exchange
Nasdaq
Sector
Measuring & Controlling Devices, NEC
Analyst Consensus
91% bullish (11 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-1787033956891
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
10w 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 Wed (10h 13m)

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Report published Aug 18, 2026