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sellWeak cluster of 510b5-1 plan

Merline Saintil sold $272k of RKLB

director at Rocket Lab Corp. 5,000 shares at an average of $54.46, traded Dec 17, 2025, filed Dec 18, 2025.

Warning score
23
Value
$272k
5,000 shares
Holdings after
393,529
-1% from before
From 52-week low
+230%
low $16.37, close $53.96
From 52-week high
-22%
high $69.27, as of Dec 17, 2025

Score components

  • Role
    Director
    +15
  • Trade size
    $272k at market
    +13
  • Share of holdings sold
    Sold 1.3% of holdings
    0
  • Cluster
    5 insiders selling within 14 days
    +15
  • 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.

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.

RKLBOct 9, 2026 · close 68.21
Since filing Dec 18, 2025: +13.8%SPY +16.3% · excess -2.5%

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 0002001011-25-000128, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Dec 17, 2025SOpen-market sale
Common Stock10b5-1
-2,533$53.82$136k395,996Dec 18, 2025
Dec 17, 2025SOpen-market sale
Common Stock10b5-1
-1,767$54.82$97k394,229Dec 18, 2025
Dec 17, 2025SOpen-market sale
Common Stock10b5-1
-500$55.67$28k393,729Dec 18, 2025
Dec 17, 2025SOpen-market sale
Common Stock10b5-1
-200$56.48$11k393,529Dec 18, 2025

Related signals

Other insiders at Rocket Lab Corp and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
17Weak
RKLBsell10b5-1
Rocket Lab Corp
Adam C. Spice
Chief Financial Officer
$9.9M
140,157 shares
-11%
17Weak
RKLBsell10b5-1
Rocket Lab Corp
Adam C. Spice
Chief Financial Officer
$8.8M
140,157 shares
-11%
38Weak
RKLBsell
Rocket Lab Corp
Marvin Bradford Clevenger
President, Rocket Lab USA, Inc
$513k
3,500 shares
-1%
45Moderate
RKLBsell
Rocket Lab Corp
Marvin Bradford Clevenger
President, Rocket Lab USA, Inc
$2.2M
15,549 shares
-3%
55Moderate
RKLBsell 5
Rocket Lab Corp
Merline Saintil
director
$1.4M
18,126 shares
-6%
45Moderate
RKLBsell 510b5-1
Rocket Lab Corp
Peter Beck
CEO
$1.3M
18,857 shares
-2%
40Moderate
RKLBsell 510b5-1
Rocket Lab Corp
Arjun Kampani
SVP & General Counsel
$3.7M
52,472 shares
-12%
40Moderate
RKLBsell 510b5-1
Rocket Lab Corp
Frank Klein
Chief Operations Officer
$5.7M
81,250 shares
-7%
42Moderate
RKLBsell 510b5-1
Rocket Lab Corp
Adam C. Spice
Chief Financial Officer
$4.4M
62,744 shares
-5%
28Weak
RKLBsell 210b5-1
Rocket Lab Corp
Jon A Olson
director
$1.4M
15,205 shares
-4%

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.