Insider Cluster (7 insiders) ·Filed May 26, 2026

ACLS

AXCELIS TECHNOLOGIES INC
NEUTRAL
Impact 3/10
Horizondays Processed4mo ago
Insider cluster: 7 insiders, $1.7M total
Actionable Insight • Neutral

The cluster is too small relative to market cap to warrant a bearish read. Monitor for any upcoming earnings or material news that could explain the timing, but the dollar amounts suggest routine selling. No immediate action needed.

DirectionNeutral
Confidencehigh
Horizondays
Final — all horizons settled through T+60d
ACLS ▼ -20.86% at T+60d
NEUTRAL call ✗ call lost -20.86% · α vs SPY -22.74% · entry $157.91 → $124.97
Entry anchored
May 26, 2026
via day open
T+1d
-1.49%
call -1.49% · α -2.05%
$155.55
settled 4mo ago
T+5d
+0.81%
call +0.81% · α +0.34%
$159.19
settled 4mo ago
T+20d
+14.43%
call +14.43% · α +16.33%
$180.70
settled 3mo ago
T+60d
-20.86%
call -20.86% · α -22.74%
$124.97
settled 6w ago

Price Chart

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Executive Summary

Seven ACLS insiders, including three directors and three EVPs, sold a total of ~$1.74M in open-market sales over a 7-day window. The cluster is 100% selling, with no insider purchases, and the total value represents ~0.04% of the $4.8B market cap — well below the 0.1% materiality threshold. The sales are small in proportion to company size and likely reflect routine portfolio diversification or tax planning, not a coordinated bearish signal.

Key Financial Metrics

Direction
selling
Total Value
$1.7M
Insiders
7

Key Facts

  • Seven insiders sold shares totaling ~$1.74M in open-market transactions from May 15–22, 2026.
  • No insider purchases were reported in the cluster.
  • Total sales represent ~0.04% of ACLS's $4.8B market cap — trivial in scale.
  • Sellers include three directors (Kurtzweil, Graves, St Dennis, Quirk) and three EVPs (Evans, Blumenstock, Tatnall).
  • Sales occurred at prices ranging from $138.79 to $155.51 per share.

Financial Impact

Total insider sales of ~$1.74M, or ~0.04% of market cap — immaterial.

insider ownershipfloat

Risk Factors

  • If a material negative catalyst emerges (e.g., earnings miss, guidance cut), the cluster could be viewed as informed selling in hindsight.
  • Continued selling at higher prices near $155 could indicate insiders see limited near-term upside.

Market Snapshot

Exchange
Nasdaq
Sector
Special Industry Machinery, NEC
Analyst Consensus
58% bullish (12 analysts)

Investment Themes

Industrials & Manufacturing

Documents Analyzed

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

DocumentAccession Number
CLUSTER Data (Synthetic)cluster-ACLS-1779829563209
11 reports for ACLS
Performance horizon
67% Hit rate 2 of 3 directional calls best @ T+60▲ +23.75%May 6, 2026
Filters
Rows
Reports for ACLS — sortable, filterable
TypeNow
Aug 9, 2026
7w ago
Institutional Cluster
BULLISH ★ 5/10
$132.65 $119.57▼ −9.86%▼ −8.95%$147.77 (+11.40%)
Jun 15, 2026
15w ago
Institutional Cluster
BULLISH ★ 6/10
$191.60 $136.56▼ −28.73%▼ −27.98%$147.77 (−22.88%)
Jun 4, 2026
17w ago
Insider Cluster
NEUTRAL ★ 3/10
$147.16 $139.97▼ −4.89%▼ −6.75%$147.77 (+0.41%)
May 28, 2026
18w ago
Insider Cluster
NEUTRAL ★ 3/10
$150.41 $176.13▲ +17.10%▲ +18.89%$147.77 (−1.76%)
May 26, 2026
18w ago
Insider Cluster
NEUTRAL ★ 3/10
$157.91 $180.70▲ +14.43%▲ +16.33%$147.77 (−6.42%)
May 22, 2026
19w ago
Insider Cluster
NEUTRAL ★ 2/10
$164.27 $167.14▲ +1.75%▲ +3.70%$147.77 (−10.04%)
May 21, 2026
19w ago
Insider Cluster
NEUTRAL ★ 3/10
$156.94 $172.13▲ +9.68%▲ +11.09%$147.77 (−5.84%)
May 15, 2026
20w ago
Insider Cluster
NEUTRAL ★ 4/10
$149.56 $187.53▲ +25.39%▲ +24.65%$147.77 (−1.20%)
May 15, 2026
20w ago
Insider Cluster
NEUTRAL ★ 3/10
$146.24 $176.85▲ +20.93%▲ +19.35%$147.77 (+1.05%)
May 15, 2026
20w ago
Insider Cluster
NEUTRAL ★ 2/10
$146.24 $176.85▲ +20.93%▲ +19.35%$147.77 (+1.05%)
Showing 10 of 11

US Market Status

Market Closed — Opens Mon (64h 17m)

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Report published May 26, 2026