MarketPeel
Insider Trading Intelligence
WK

William G. Kistner

BY
DIRECTOR · BYLINE BANCORP, INC. · CIK 0001739310
FILING MIX · LIFETIME100%/0%
BUYS
22
SELLS
0
TOTAL VALUE
$216.9K
COMPANIES
1
ACTIVE SINCE
Feb 2020
HOLDINGS NOW
14,189
AVG SELL PX
TRADE KIND
SHOWING 22 / 22
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
19 backtested trades · 8 horizons · 12 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by William G. Kistner, 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
7d19+21.05%-3.09%-0.45%-2.65%-1.60%
14d19+47.37%-0.85%+0.28%-1.13%-0.53%
30d19+47.37%+1.28%+0.77%+0.35%-2.49%
60d19+52.63%+1.75%+2.55%-0.79%+0.76%
90d19(1 pending)+66.67%+4.68%+6.22%-1.54%-1.07%
180d19(1 pending)+83.33%+11.18%+10.07%+1.12%+2.83%
1y19(3 pending)+75.00%+23.02%+18.79%+4.23%+0.48%
2y19(7 pending)+75.00%+38.12%+34.68%+3.44%-14.99%
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
BY · 14,189 shares · as of May 4, 2026
03,5477,09510,64214,189202120222023202420252026SHARES 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
2026
FLOW · 22 buys / 0 sellsCOVERAGE · 26 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
BY
BYLINE BANCORP, INC.
PURCHASE
100$31.97$3.2K14,189May 4, 2026May 4, 2026View →
BY
BYLINE BANCORP, INC.
PURCHASE
65$27.56$1.8K14,089Oct 28, 2025Oct 28, 2025View →
BY
BYLINE BANCORP, INC.
PURCHASE
60$25.71$1.5K14,024Aug 8, 2025Aug 11, 2025View →
BY
BYLINE BANCORP, INC.
PURCHASE
164$25.29$4.1K13,964Jun 13, 2025Jun 13, 2025View →
BY
BYLINE BANCORP, INC.
PURCHASE
65$27.77$1.8K13,800Mar 4, 2025Mar 6, 2025View →
BY
BYLINE BANCORP, INC.
PURCHASE
50$30.56$1.5K13,735Nov 20, 2024Nov 21, 2024View →
BY
BYLINE BANCORP, INC.
PURCHASE
60$27.91$1.7K13,685Aug 26, 2024Aug 28, 2024View →
BY
BYLINE BANCORP, INC.
PURCHASE
50$22.47$1.1K13,625Jun 14, 2024Jun 18, 2024View →
BY
BYLINE BANCORP, INC.
PURCHASE
60$21.09$1.3K13,575Mar 11, 2024Mar 12, 2024View →
BY
BYLINE BANCORP, INC.
PURCHASE
500$20.54$10.3K13,515Nov 21, 2023Nov 21, 2023View →
BY
BYLINE BANCORP, INC.
PURCHASE
600$21.41$12.8K13,015Aug 16, 2023Aug 17, 2023View →
BY
BYLINE BANCORP, INC.
PURCHASEGRANT
Stock grant
1,0362,371Jun 6, 2023Jun 8, 2023View →
BY
BYLINE BANCORP, INC.
PURCHASE
180$22.74$4.1K11,080Aug 25, 2022Aug 26, 2022View →
BY
BYLINE BANCORP, INC.
PURCHASEGRANT
Stock grant
991991Jun 7, 2022Jun 9, 2022View →
BY
BYLINE BANCORP, INC.
PURCHASEGRANT
Stock grant
1,3351,335Jun 7, 2022Jun 21, 2022View →
BY
BYLINE BANCORP, INC.
PURCHASE
800$23.35$18.7K10,900May 9, 2022May 11, 2022View →
BY
BYLINE BANCORP, INC.
PURCHASE
2,600$25.61$66.6K10,100Aug 13, 2021Aug 16, 2021View →
BY
BYLINE BANCORP, INC.
PURCHASE
1,300$23.29$30.3K7,500Jun 1, 2021Jun 3, 2021View →
BY
BYLINE BANCORP, INC.
PURCHASE
1,200$22.95$27.5K6,200May 4, 2021May 6, 2021View →
BY
BYLINE BANCORP, INC.
PURCHASE
1,700$10.36$17.6K5,000May 6, 2020May 7, 2020View →
BY
BYLINE BANCORP, INC.
PURCHASE
600$12.11$7.3K3,300Mar 12, 2020Mar 13, 2020View →
BY
BYLINE BANCORP, INC.
PURCHASE
200$18.60$3.7K2,700Feb 26, 2020Feb 28, 2020View →
Other insiders · BY
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About this filer
CIK 0001739310
ROLE
Director
PRIMARY
BY
COMPANIES
1
ACTIVE SINCE
Feb 2020
MARKETPEEL · /INSIDER/0001739310DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

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