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sellModerate cluster of 4

Mbg Investors I, L.p. sold $12M of BY

owner at BYLINE BANCORP, INC.. 300,000 shares at an average of $39.10, traded Aug 7, 2026, filed Aug 11, 2026.

Warning score
52
Value
$12M
300,000 shares
Holdings after
11,535,145
-3% from before
From 52-week low
+55%
low $25.12, close $38.83
From 52-week high
-2%
high $39.75, as of Aug 7, 2026

Score components

  • Role
    10% owner
    +12
  • Trade size
    $11.7M at market
    +25
  • Share of holdings sold
    Sold 2.5% of holdings
    0
  • Cluster
    4 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.

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.

BYOct 9, 2026 · close 36.32
Since filing Aug 11, 2026: -6.3%SPY +1.2% · excess -7.6%

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 0001710094-26-000002, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Aug 7, 2026SOpen-market sale
Common stock
-300,000$39.10$12M11,535,145Aug 11, 2026

Related signals

Other insiders at BYLINE BANCORP, INC. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
23Weak
BYbuy 2
BYLINE BANCORP, INC.
William G Kistner
director
$3,830
100 shares
+1%
23Weak
BYbuy 2
BYLINE BANCORP, INC.
Mary Jo S. Herseth
director
$12k
300 shares
+2%
62Notable
BYsell 4
BYLINE BANCORP, INC.
Roberto R Herencia
CHIEF EXECUTIVE OFFICER
$774k
19,750 shares
-5%
45Moderate
BYsell 4
BYLINE BANCORP, INC.
Dana Rose
CHIEF HUMAN RESOURCES OFFICER
$94k
2,421 shares
-17%
55Moderate
BYsell 4
BYLINE BANCORP, INC.
Perochena Antonio Del Valle
director, owner
$12M
300,000 shares
-3%
10Weak
BYbuy
BYLINE BANCORP, INC.
William G Kistner
director
$3,197
100 shares
+1%
15Weak
BYbuy
BYLINE BANCORP, INC.
Mary Jo S. Herseth
director
$9,249
300 shares
+2%
31Weak
BYsell
BYLINE BANCORP, INC.
John Barkidjija
HEAD OF CRE & SPECIALTY FIN
$146k
4,509 shares
-19%
23Weak
BYbuy
BYLINE BANCORP, INC.
Brian F Doran
General Counsel
$25k
750 shares
-
15Weak
BYbuy
BYLINE BANCORP, INC.
Phillip R. Cabrera
director
$5,244
169 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.

Mbg Investors I, L.p. sold $12M of BY | InsiderTell