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RK

Robert B. Kaminski

MBWM
PRESIDENT, CEO · MERCANTILE BANK CORP · CIK 0001208523
FILING MIX · LIFETIME29%/71%
BUYS
12
SELLS
30
TOTAL VALUE
$2.65M
COMPANIES
1
ACTIVE SINCE
Dec 2020
HOLDINGS NOW
77,986
AVG SELL PX
$44.75
TRADE KIND
SHOWING 42 / 42
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
20 backtested trades · 8 horizons · 19 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Robert B. Kaminski, 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
7d20+70.00%-0.74%+0.11%-0.85%-1.86%—
14d20+60.00%+0.25%+0.35%-0.10%-1.46%—
30d20+70.00%-2.50%+0.08%-2.58%-3.45%—
60d20+75.00%-5.08%-1.49%-3.59%-4.80%—
90d20+65.00%-3.09%+1.10%-4.19%-4.32%—
180d20+60.00%-2.41%+6.21%-8.62%-11.21%—
1y20+20.00%+5.60%+16.31%-10.71%-10.54%—
2y20(19 pending)+0.00%+43.09%+35.84%+7.25%+7.25%—
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
MBWM · 77,986 shares · as of May 2, 2025
025,61851,23776,855102,47320212022202320242025SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
FLOW · 12 buys / 30 sellsCOVERAGE · 19 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
MBWM
MERCANTILE BANK CORP
SALE10b5-1
10b5-1 plan
250$42.85$10.7K77,986May 2, 2025May 6, 2025 ↗View →
MBWM
MERCANTILE BANK CORP
SALE10b5-1
10b5-1 plan
250$43.14$10.8K78,236Apr 2, 2025Apr 4, 2025 ↗View →
MBWM
MERCANTILE BANK CORP
SALE10b5-1
10b5-1 plan
250$48.11$12.0K78,486Mar 3, 2025Mar 5, 2025 ↗View →
MBWM
MERCANTILE BANK CORP
SALE
7,993$47.87$382.6K78,737Feb 19, 2025Feb 21, 2025 ↗View →
MBWM
MERCANTILE BANK CORP
SALE
1,000$50.22$50.2K11,810Feb 11, 2025Feb 12, 2025 ↗View →
MBWM
MERCANTILE BANK CORP
SALE
1,000$49.82$49.8K12,810Feb 6, 2025Feb 10, 2025 ↗View →
MBWM
MERCANTILE BANK CORP
SALE10b5-1
10b5-1 plan
21$48.14$1.0K86,730Feb 3, 2025Feb 4, 2025 ↗View →
MBWM
MERCANTILE BANK CORP
SALE10b5-1
10b5-1 plan
229$46.95$10.8K86,751Feb 3, 2025Feb 4, 2025 ↗View →
MBWM
MERCANTILE BANK CORP
SALE
3,000$50.16$150.5K13,810Jan 27, 2025Jan 28, 2025 ↗View →
MBWM
MERCANTILE BANK CORP
SALE
3,000$49.14$147.4K16,810Jan 24, 2025Jan 28, 2025 ↗View →
MBWM
MERCANTILE BANK CORP
SALE10b5-1
10b5-1 plan
250$44.61$11.2K86,980Jan 2, 2025Jan 3, 2025 ↗View →
MBWM
MERCANTILE BANK CORP
SALE10b5-1
10b5-1 plan
250$49.60$12.4K87,230Dec 2, 2024Dec 3, 2024 ↗View →
MBWM
MERCANTILE BANK CORP
SALE
5,800$51.75$300.1K19,810Nov 25, 2024Nov 27, 2024 ↗View →
MBWM
MERCANTILE BANK CORP
SALE
4,000$49.51$198.0K25,610Nov 14, 2024Nov 15, 2024 ↗View →
MBWM
MERCANTILE BANK CORP
SALEGRANT
Gift
5,800——87,480Nov 6, 2024Nov 6, 2024 ↗View →
MBWM
MERCANTILE BANK CORP
SALEGRANT
Gift
1,200——93,280Nov 5, 2024Nov 6, 2024 ↗View →
MBWM
MERCANTILE BANK CORP
SALE10b5-1
10b5-1 plan
250$42.51$10.6K94,480Nov 4, 2024Nov 5, 2024 ↗View →
MBWM
MERCANTILE BANK CORP
SALE10b5-1
10b5-1 plan
250$41.77$10.4K94,730Oct 2, 2024Oct 3, 2024 ↗View →
MBWM
MERCANTILE BANK CORP
SALE10b5-1
10b5-1 plan
250$46.05$11.5K94,980Sep 3, 2024Sep 4, 2024 ↗View →
MBWM
MERCANTILE BANK CORP
SALE10b5-1
10b5-1 plan
250$43.66$10.9K95,230Aug 2, 2024Aug 5, 2024 ↗View →
MBWM
MERCANTILE BANK CORP
SALE
2,000$48.01$96.0K29,610Jul 22, 2024Jul 22, 2024 ↗View →
MBWM
MERCANTILE BANK CORP
SALE
3,000$48.73$146.2K31,610Jul 19, 2024Jul 22, 2024 ↗View →
MBWM
MERCANTILE BANK CORP
SALE10b5-1
10b5-1 plan
250$39.83$10.0K95,480Jul 2, 2024Jul 3, 2024 ↗View →
MBWM
MERCANTILE BANK CORP
PURCHASEGRANT
Stock grant
1,007——95,730Jun 20, 2024Jun 24, 2024 ↗View →
MBWM
MERCANTILE BANK CORP
SALE
PRESIDENT, CEO
7,749$38.96$301.9K94,723Feb 16, 2024Feb 20, 2024 ↗View →
MBWM
MERCANTILE BANK CORP
PURCHASEGRANT
Stock grant
8,667——102,473Dec 14, 2023Dec 18, 2023 ↗View →
MBWM
MERCANTILE BANK CORP
SALE
PRESIDENT, CEO
3,591$34.75$124.8K93,806Feb 16, 2023Feb 21, 2023 ↗View →
MBWM
MERCANTILE BANK CORP
PURCHASEGRANT
Stock grant
1,060——92,385Dec 28, 2022Dec 30, 2022 ↗View →
MBWM
MERCANTILE BANK CORP
PURCHASEGRANT
Stock grant
5,012——97,397Dec 28, 2022Dec 30, 2022 ↗View →
MBWM
MERCANTILE BANK CORP
PURCHASEGRANT
Stock grant
267——91,325Dec 28, 2022Dec 30, 2022 ↗View →
MBWM
MERCANTILE BANK CORP
PURCHASEGRANT
Stock grant
11,406——91,058Dec 15, 2022Dec 19, 2022 ↗View →
MBWM
MERCANTILE BANK CORP
SALE
PRESIDENT, CEO
3,226$37.92$122.3K79,652Feb 16, 2022Feb 18, 2022 ↗View →
MBWM
MERCANTILE BANK CORP
PURCHASE
PRESIDENT, CEO
1,200$27.66$33.2K83,749Jan 25, 2022Jan 27, 2022 ↗View →
MBWM
MERCANTILE BANK CORP
SALE
PRESIDENT, CEO
871$38.15$33.2K82,878Jan 25, 2022Jan 27, 2022 ↗View →
MBWM
MERCANTILE BANK CORP
SALE
PRESIDENT, CEO
1,200——0Jan 25, 2022Jan 27, 2022 ↗View →
MBWM
MERCANTILE BANK CORP
PURCHASEGRANT
Stock grant
7,269——70,768Dec 30, 2021Jan 3, 2022 ↗View →
MBWM
MERCANTILE BANK CORP
PURCHASEGRANT
Stock grant
3,879——82,549Dec 30, 2021Jan 3, 2022 ↗View →
MBWM
MERCANTILE BANK CORP
PURCHASEGRANT
Stock grant
7,902——78,760Dec 30, 2021Jan 3, 2022 ↗View →
MBWM
MERCANTILE BANK CORP
PURCHASEGRANT
Stock grant
10,023$34.79$348.7K63,499Dec 16, 2021Dec 20, 2021 ↗View →
MBWM
MERCANTILE BANK CORP
PURCHASEGRANT
Stock grant
10,599——62,848Dec 17, 2020Dec 21, 2020 ↗View →
MBWM
MERCANTILE BANK CORP
SALE
PRESIDENT, CEO
9,372——53,476Dec 17, 2020Dec 21, 2020 ↗View →
MBWM
MERCANTILE BANK CORP
SALE
PRESIDENT, CEO
1,714$25.04$42.9K52,249Dec 1, 2020Dec 3, 2020 ↗View →
Other insiders · MBWM
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About this filer
CIK 0001208523
ROLE
PRESIDENT, CEO
PRIMARY
MBWM
COMPANIES
1
ACTIVE SINCE
Dec 2020
MARKETPEEL · /INSIDER/0001208523DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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