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sellWeak cluster of 210b5-1 plan

Tiffani Chambers sold $371k of TRU

EVP, Chief Operations Officer at TransUnion. 4,318 shares at an average of $86.00, traded Dec 17, 2025, filed Dec 19, 2025.

Warning score
23
Value
$371k
4,318 shares
Holdings after
50,427
-8% from before
From 52-week low
+23%
low $68.63, close $84.33
From 52-week high
-15%
high $99.22, as of Dec 17, 2025

Score components

  • Role
    COO
    +20
  • Trade size
    $371k at market
    +15
  • Share of holdings sold
    Sold 7.9% of holdings
    0
  • Cluster
    2 insiders selling within 14 days
    +8
  • 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 -1.0%, 3m -18.9%, 6m -25.6%.

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.

TRUOct 9, 2026 · close 65.48
Since filing Dec 19, 2025: -24.4%SPY +15.2% · excess -39.6%

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 0002057116-25-000011, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Dec 17, 2025SOpen-market sale
Common Stock10b5-1
-4,318$86.00$371k50,427Dec 19, 2025

Related signals

Other insiders at TransUnion and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
3Weak
TRUsell 210b5-1
TransUnion
Mohamed Abdelsadek
EVP, Chief Global Solutions
$16k
250 shares
-0%
15Weak
TRUsell 210b5-1
TransUnion
Todd C. Skinner
President, International
$62k
1,000 shares
-2%
20Weak
TRUsell 510b5-1
TransUnion
Mohamed Abdelsadek
EVP, Chief Global Solutions
$99k
1,250 shares
-2%
60Notable
TRUsell 5
TransUnion
Venkat Achanta
EVP, Chief Tech, Data & Analy.
$1.8M
23,287 shares
-11%
24Weak
TRUsell 510b5-1
TransUnion
Steven M Chaouki
President, US Markets
$84k
1,000 shares
-1%
24Weak
TRUsell 510b5-1
TransUnion
Todd C. Skinner
President, International
$84k
1,000 shares
-2%
24Weak
TRUsell 510b5-1
TransUnion
Jennifer A. Williams
SVP, Chief Accounting Officer
$90k
1,070 shares
-20%
36Weak
TRUsell 410b5-1
TransUnion
Alicia Brooke Zuiker
EVP, CHRO
$681k
8,673 shares
-17%
24Weak
TRUsell 410b5-1
TransUnion
Steven M Chaouki
President, US Markets
$80k
1,000 shares
-1%
23Weak
TRUsell 410b5-1
TransUnion
Todd C. Skinner
President, International
$76k
950 shares
-1%

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.

Tiffani Chambers sold $371k of TRU | InsiderTell