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buyModerate cluster of 4

Nicholas W Zillges bought $15k of MBBC

President and CEO at Marathon Bancorp, Inc. /MD/. 970 shares at an average of $15.00, traded Jun 16, 2026, filed Jun 17, 2026.

Conviction score
50
Value
$15k
970 shares
Holdings after
57,205
+2% from before
From 52-week low
+51%
low $9.90, close $14.98
From 52-week high
-3%
high $15.46, as of Jun 16, 2026

Score components

  • Role
    CEO
    +25
  • Trade size
    $15k at market
    0
  • Relative to holdings
    Holdings up 1.7%
    0
  • Price context
    Near the top of the 52-week range
    0
  • Cluster
    4 insiders buying within 14 days
    +15
  • Repeat buying
    2 buys in 90 days
    +5
  • Track record
    Median 6-month excess return +8% over 4 past buys
    +5

What happened after comparable buys

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.

MBBCOct 12, 2026 · close 15.02
Since filing Jun 17, 2026: +1.3%SPY +5.5% · excess -4.3%

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 0001437749-26-020909, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Jun 16, 2026POpen-market purchase
Common Stock
+970$15.00$15k57,205Jun 17, 2026

Related signals

Other insiders at Marathon Bancorp, Inc. /MD/ and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
33Weak
MBBCbuy 4
Marathon Bancorp, Inc. /MD/
Terry Cornish
SVP and CCO
$20k
1,389 shares
+5%
38Weak
MBBCbuy 4
Marathon Bancorp, Inc. /MD/
Michelle Knopf
EVP and COO
$15k
1,041 shares
+6%
40Moderate
MBBCbuy 4
Marathon Bancorp, Inc. /MD/
Nora Spatz
EVP and CAO
$55k
3,819 shares
+11%
45Moderate
MBBCbuy 4
Marathon Bancorp, Inc. /MD/
Nicholas W Zillges
President and CEO
$15k
1,076 shares
+2%
30Weak
MBBCbuy
Marathon Bancorp, Inc. /MD/
Nicholas W Zillges
President and CEO
$12k
1,075 shares
+3%
25Weak
MBBCbuy
Marathon Bancorp, Inc. /MD/
Nicholas W Zillges
President and CEO
$15k
1,325 shares
+4%
30Weak
MBBCbuy
Marathon Bancorp, Inc. /MD/
Nicholas W Zillges
President and CEO
$4,995
500 shares
+2%
25Weak
MBBCbuy
Marathon Bancorp, Inc. /MD/
Nicholas W Zillges
President and CEO
$5,034
500 shares
+2%
29Weak
MBBCbuy
Marathon Bancorp, Inc. /MD/
Nicholas W Zillges
President and CEO
$951
100 shares
+1%
51Moderate
MBBCbuy
Marathon Bancorp, Inc. /MD/
Nicholas W Zillges
President and CEO
$11k
1,540 shares
+8%

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.

Nicholas W Zillges bought $15k of MBBC | InsiderTell