MarketPeel
Insider Trading Intelligence
TC

Thomas J. Chmelik

MNSB
SENIOR EVP · MAINSTREET BANCSHARES, INC. · CIK 0001774482
FILING MIX · LIFETIME58%/42%
BUYS
11
SELLS
8
TOTAL VALUE
$2.27M
COMPANIES
1
ACTIVE SINCE
Feb 2020
HOLDINGS NOW
60,962
AVG SELL PX
$19.96
TRADE KIND
SHOWING 19 / 19
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
11 backtested trades · 8 horizons · 12 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Thomas J. Chmelik, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d11+27.27%+3.64%-0.31%+3.95%+4.32%
14d11+45.45%+5.37%+2.09%+3.28%+3.91%
30d11+63.64%+1.21%+3.98%-2.77%-1.09%
60d11+36.36%+9.30%+4.83%+4.47%+9.66%
90d11+36.36%+7.14%+4.09%+3.05%+10.21%
180d11+36.36%+8.93%+10.51%-2.69%+10.39%
1y11(6 pending)+40.00%+0.32%+30.53%-30.21%-44.75%
2y11(6 pending)+20.00%+2.21%+49.55%-47.34%-48.18%
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
MNSB · 60,962 shares · as of Feb 20, 2026
026,60953,21879,826106,435202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2020
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
FLOW · 11 buys / 8 sellsCOVERAGE · 25 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
MNSB
MAINSTREET BANCSHARES, INC.
SALE
Senior EVP
2,799$20.36$57.0K60,962Feb 20, 2026Feb 20, 2026View →
MNSB
MAINSTREET BANCSHARES, INC.
SALE
CFO, MainStreet Bancshares Inc
5,452$20.05$109.3K63,761Dec 9, 2025Dec 10, 2025View →
MNSB
MAINSTREET BANCSHARES, INC.
SALE
CFO, MainStreet Bancshares Inc
1,786$20.21$36.1K69,213Dec 9, 2025Dec 10, 2025View →
MNSB
MAINSTREET BANCSHARES, INC.
SALE
CFO, MainStreet Bancshares Inc
12,234$20.10$245.9K82,342Dec 8, 2025Dec 8, 2025View →
MNSB
MAINSTREET BANCSHARES, INC.
SALE
CFO, MainStreet Bancshares Inc
11,343$19.75$224.0K70,999Dec 8, 2025Dec 8, 2025View →
MNSB
MAINSTREET BANCSHARES, INC.
SALE
CFO, MainStreet Bancshares Inc
8,721$19.86$173.2K94,576Dec 3, 2025Dec 4, 2025View →
MNSB
MAINSTREET BANCSHARES, INC.
SALE
CFO, MainStreet Bancshares Inc
1,050$19.50$20.5K0Dec 3, 2025Dec 4, 2025View →
MNSB
MAINSTREET BANCSHARES, INC.
PURCHASEGRANT
Stock grant
12,933$21.77$281.6K106,435Jan 17, 2024Jan 19, 2024View →
MNSB
MAINSTREET BANCSHARES, INC.
PURCHASE
Chief Financial Officer
241$20.63$5.0K50,244May 23, 2023May 30, 2023View →
MNSB
MAINSTREET BANCSHARES, INC.
PURCHASE
Chief Financial Officer
153$21.60$3.3K50,397May 23, 2023May 30, 2023View →
MNSB
MAINSTREET BANCSHARES, INC.
SALE
Chief Financial Officer
5,42993,502May 16, 2023May 18, 2023View →
MNSB
MAINSTREET BANCSHARES, INC.
PURCHASE
Chief Financial Officer
241$20.63$5.0K46,085May 12, 2023May 16, 2023View →
MNSB
MAINSTREET BANCSHARES, INC.
PURCHASEGRANT
Stock grant
8,900$26.63$237.0K98,931Jan 18, 2023Jan 19, 2023View →
MNSB
MAINSTREET BANCSHARES, INC.
PURCHASEGRANT
Stock grant
8,900$26.63$237.0K93,502Jan 18, 2023Feb 7, 2023View →
MNSB
MAINSTREET BANCSHARES, INC.
PURCHASE
Chief Financial Officer
500$24.15$12.1K90,031Mar 7, 2022Mar 7, 2022View →
MNSB
MAINSTREET BANCSHARES, INC.
PURCHASEGRANT
Stock grant
9,796$24.16$236.7K89,531Jan 25, 2022Jan 26, 2022View →
MNSB
MAINSTREET BANCSHARES, INC.
PURCHASEGRANT
Stock grant
11,049$17.45$192.8K79,735Jan 22, 2021Jan 25, 2021View →
MNSB
MAINSTREET BANCSHARES, INC.
PURCHASE
Chief Financial Officer
4,040$16.48$66.6K45,844Mar 16, 2020Mar 17, 2020View →
MNSB
MAINSTREET BANCSHARES, INC.
PURCHASEGRANT
Stock grant
5,568$22.00$122.5K68,686Feb 6, 2020Feb 6, 2020View →
Other insiders · MNSB
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About this filer
CIK 0001774482
ROLE
Senior EVP
PRIMARY
MNSB
COMPANIES
1
ACTIVE SINCE
Feb 2020
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