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sellWeak10b5-1 plan

Luc Seraphin sold $468k of RMBS

President and CEO at RAMBUS INC. 10,000 shares at an average of $46.81, traded Apr 8, 2025, filed Apr 8, 2025.

Warning score
22
Value
$468k
10,000 shares
Holdings after
336,844
-3% from before
From 52-week low
+12%
low $38.29, close $42.90
From 52-week high
-37%
high $68.59, as of Apr 8, 2025

Score components

  • Role
    CEO
    +25
  • Trade size
    $468k at market
    +17
  • Share of holdings sold
    Sold 2.9% of holdings
    0
  • Cluster
    No other insider selling within 14 days
    0
  • 10b5-1 plan
    Pre-scheduled under a 10b5-1 plan
    -20

What happened after comparable sells

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

This signal so far: 1m +20.3%, 3m +51.9%, 6m +125.7%.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

RMBSOct 9, 2026 · close 107.47
Since filing Apr 8, 2025: +150.5%SPY +59.4% · excess +91.1%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0000917273-25-000065, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Apr 8, 2025SOpen-market sale
Common Stock10b5-1
-10,000$46.81$468k336,844Apr 8, 2025

Related signals

Other insiders at RAMBUS INC and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
34Weak
RMBSsell10b5-1
RAMBUS INC
Charles Kissner
director
$555k
5,000 shares
-57%
23Weak
RMBSsell10b5-1
RAMBUS INC
Charles Kissner
director
$525k
5,000 shares
-36%
60Notable
RMBSsell 5
RAMBUS INC
Emiko Higashi
director
$1.6M
10,000 shares
-17%
58Moderate
RMBSsell 5
RAMBUS INC
Necip Sayiner
director
$851k
5,000 shares
-22%
56Moderate
RMBSsell 5
RAMBUS INC
Eric B Stang
director
$730k
5,000 shares
-21%
52Moderate
RMBSsell 5
RAMBUS INC
Emiko Higashi
director
$788k
5,000 shares
-8%
65Notable
RMBSsell 5
RAMBUS INC
Xianzhi Sean Fan
EVP, COO
$5.8M
37,914 shares
-18%
41Moderate
RMBSsell 5
RAMBUS INC
John Shinn
SVP, General Counsel
$144k
1,000 shares
-5%
47Moderate
RMBSsell 3
RAMBUS INC
Steven Laub
director
$188k
1,500 shares
-17%
65Notable
RMBSsell 4
RAMBUS INC
Necip Sayiner
director
$1.3M
9,824 shares
-30%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Luc Seraphin sold $468k of RMBS | InsiderTell