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sellStrong cluster of 3

Michael B. Petras Jr. sold $12M of SHC

Chairman & CEO at Sotera Health Co. 750,000 shares at an average of $16.45, traded Dec 8, 2025, filed Dec 10, 2025.

Warning score
85
Value
$12M
750,000 shares
Holdings after
0
-86% from before
From 52-week low
-
no price yet
From 52-week high
-
no price yet

Score components

  • Role
    CEO
    +25
  • Trade size
    $12.3M at market
    +25
  • Share of holdings sold
    Sold 86% of holdings
    +20
  • Cluster
    3 insiders selling within 14 days
    +15

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 +13.7%, 3m -17.6%, 6m -3.7%.

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.

SHCOct 13, 2026 · close 18.21
Since filing Dec 10, 2025: +7.8%SPY +14.4% · excess -6.6%

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 0001193125-25-314343, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Dec 8, 2025SOpen-market sale
Common Stock, $0.01 par value per share ("Common Stock")
-315,896$16.45$5.2M552,790Dec 10, 2025
Dec 8, 2025SOpen-market sale
Common Stockindirect: By Grantor Trust
-394,861$16.45$6.5M4,819,393Dec 10, 2025
Dec 8, 2025SOpen-market sale
Common Stockindirect: By Family Trust
-39,243$16.45$646k0Dec 10, 2025

Related signals

Other insiders at Sotera Health Co and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
73Notable
SHCsell 2
Sotera Health Co
Michael B. Petras Jr.
Executive Chairman
$21M
1,144,515 shares
-165%
63Notable
SHCsell 2
Sotera Health Co
Michael P Rutz
President of Sterigenics
$2.8M
150,000 shares
-31%
68Notable
SHCsell 2
Sotera Health Co
Warburg Pincus & Co.
director, owner
$290M
19,102,952 shares
-100%
68Notable
SHCsell 2
Sotera Health Co
Gtcr Investment Xi LLC
director, owner
$193M
12,735,301 shares
-100%
68Notable
SHCsell 2
Sotera Health Co
Warburg Pincus & Co.
director, owner
$290M
19,102,952 shares
-100%
58Moderate
SHCsell 2
Sotera Health Co
Warburg Pincus & Co.
director, owner
$229M
15,000,000 shares
-44%
58Moderate
SHCsell 2
Sotera Health Co
Gtcr Investment Xi LLC
director, owner
$153M
10,000,000 shares
-44%
58Moderate
SHCsell 2
Sotera Health Co
Warburg Pincus & Co.
director, owner
$229M
15,000,000 shares
-44%
60Notable
SHCsell 3
Sotera Health Co
Gtcr Investment Xi LLC
director, owner
$106M
6,480,000 shares
-22%
60Notable
SHCsell 3
Sotera Health Co
Warburg Pincus & Co.
director, owner
$159M
9,720,000 shares
-22%

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.

Michael B. Petras Jr. sold $12M of SHC | InsiderTell