Insider Cluster (3 insiders) ·Filed May 27, 2026

RMBS

RAMBUS INC
NEUTRAL
Impact 3/10
Horizondays Processed4mo ago
Insider cluster: 3 insiders, $6.7M total
Actionable Insight • Neutral

This cluster is too small relative to market cap to warrant a bearish read. Monitor for any upcoming earnings or material agreement filings that could provide context for the COO's larger sale, but treat this as routine portfolio diversification.

DirectionNeutral
Confidencehigh
Horizondays
Final — all horizons settled through T+60d
RMBS ▼ -38.36% at T+60d
NEUTRAL call ✗ call lost -38.36% · α vs SPY -40.09% · entry $148.02 → $91.24
Entry anchored
May 27, 03:59 PM ET
via exchange tick
T+1d
-1.73%
call -1.73% · α -1.97%
$145.46
settled 4mo ago
T+5d
+15.30%
call +15.30% · α +15.34%
$170.66
settled 4mo ago
T+20d
-22.49%
call -22.49% · α -19.35%
$114.73
settled 3mo ago
T+60d
-38.36%
call -38.36% · α -40.09%
$91.24
settled 6w ago

Price Chart

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Executive Summary

Three Rambus insiders sold a total of $6.67M in open-market sales over a 7-day window, led by the EVP/COO ($5.74M) and a director ($788K). The total represents ~0.04% of the $17B market cap, well below the 0.1% materiality threshold, making this a routine liquidity-driven cluster. No insider buying was present.

Key Financial Metrics

Direction
selling
Total Value
$6.7M
Insiders
3

Key Facts

  • EVP/COO Sean Fan sold 37,814 shares for $5.74M on May 26 at $151.69
  • Director Emiko Higashi sold 5,000 shares for $788K on May 26 at $157.57
  • SVP/GC John Shinn sold 1,000 shares for $144K on May 22 at $143.63
  • Total cluster value of $6.67M equals ~0.04% of Rambus's $17B market cap
  • All three trades were open-market sales (code S); no insider purchases in the cluster
  • No 10b5-1 plan disclosure or vesting pattern noted in the filing

Financial Impact

$6.67M in total insider sales, representing 0.04% of market cap

insider ownership

Risk Factors

  • Insider sales at current elevated stock price ($157) could signal perceived overvaluation, though dollar amount is immaterial
  • No insider buying to offset the selling pattern

Market Snapshot

Exchange
Nasdaq
Sector
Semiconductors & Related Devices
Analyst Consensus
76% bullish (17 analysts)

Investment Themes

Semiconductors

Documents Analyzed

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

DocumentAccession Number
CLUSTER Data (Synthetic)cluster-RMBS-1779921814919
13 reports for RMBS
Performance horizon

Track record builds as more directional reports settle.

Filters
Rows
Reports for RMBS — sortable, filterable
TypeNow
Aug 5, 2026
8w ago
8-K
NEUTRAL ★ 4/10
$97.30 $84.72▼ −12.93%▼ −12.33%$111.97 (+15.08%)
Jul 27, 2026
9w ago
8-K
BULLISH ★ 7/10
$87.75 $89.86▲ +2.40%▼ −0.98%$111.97 (+27.60%)
Jun 3, 2026
17w ago
Insider Cluster
NEUTRAL ★ 2/10
$169.35 $112.92▼ −33.32%▼ −31.95%$111.97 (−33.88%)
Jun 2, 2026
17w ago
Insider Cluster
NEUTRAL ★ 4/10
$170.66 $112.92▼ −33.83%▼ −32.83%$111.97 (−34.39%)
May 27, 2026
18w ago
Insider Cluster
NEUTRAL ★ 3/10
$148.02 $114.73▼ −22.49%▼ −19.35%$111.97 (−24.35%)
May 26, 2026
18w ago
Insider Cluster
NEUTRAL ★ 2/10
$148.66 $123.69▼ −16.80%▼ −14.90%$111.97 (−24.68%)
May 7, 2026
21w ago
Insider Cluster
NEUTRAL ★ 2/10
$126.60 $170.66▲ +34.80%▲ +31.67%$111.97 (−11.56%)
Apr 29, 2026
22w ago
8-K
NEUTRAL ★ 2/10
$115.11 $148.02▲ +28.59%▲ +23.62%$111.97 (−2.73%)
Apr 27, 2026
22w ago
8-K
NEUTRAL ★ 5/10
$111.27 $157.23▲ +41.30%▲ +35.84%$111.97 (+0.63%)
Apr 24, 2026
23w ago
8-K
NEUTRAL ★ 3/10
$141.31 $157.23▲ +11.27%▲ +6.31%$111.97 (−20.76%)
Showing 10 of 13

US Market Status

Market Closed — Opens Mon (65h 23m)

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Report published May 27, 2026