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Insider · CIK 0002001764

John Antalek

officer

Files at GCBC (GREENE COUNTY BANCORP INC). First filing Nov 19, 2025, latest Nov 19, 2025.

In brief

John Antalek files SEC Form 4 as officer at GCBC (GREENE COUNTY BANCORP INC). Since Nov 19, 2025, John Antalek has reported 1 open-market buy worth $33k and 0 open-market sells worth $0, the latest filed on Nov 19, 2025.

A track record needs three past buys with six months of prices behind them; John Antalek has 0, so none is measured yet.

The newest scored trade: bought $33k of GCBC on Nov 18, 2025, filed Nov 19, 2025, scored 53 (moderate). In the last 12 months: 1 buy worth $33k and 0 sells worth $0.

Track record
Not enough history
Fewer than three past buys with six months of prices.
Median 6-month excess
-
after past buys, n = 0
Hit rate
-
past buys that beat the index over 6 months
Open-market trades
1 / 0
$33k bought, $0 sold

Where the trades landed

Last year at the company this insider has traded most, with each buy and sell on the bar it happened.

GCBC: GREENE COUNTY BANCORP INC

GCBCOct 9, 2026 · close 33.65

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™

Signals

This insider’s open-market buys and sells, scored.

ScoreCompanyValueHoldingsPrice contextFiled
53Moderate
GCBCbuy 2
GREENE COUNTY BANCORP INC
$33k
1,500 shares
+25%+7% from low-31% from high

Transactions

Every row this insider has filed, 1 in all, newest first.

DateCompanyTransactionSharesPriceValueHoldings afterFiled
Nov 18, 2025GCBC
GREENE COUNTY BANCORP INC
POpen-market purchase
Common Stockindirect: By 401(k)
+1,500$22.00$33k7,567Nov 19, 2025

Questions about John Antalek

Answered from the filings on this page, as of the latest one.

Is John Antalek buying or selling?

In the last 12 months John Antalek reported 1 open-market buy worth $33k and 0 open-market sells worth $0 on SEC Form 4; the latest was bought $33k of GCBC on Nov 18, 2025. Grants, option exercises and tax withholding are not counted.

How did John Antalek's past buys perform?

Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and John Antalek has 0.

Where does John Antalek file Form 4?

John Antalek has filed Form 4 at GCBC (GREENE COUNTY BANCORP INC) as EVP and CLO. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.

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.

John Antalek: insider trades and track record | InsiderTell