Byline Bancorp Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NYSE:BY Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
04 May 26	BuyUS$3,197	William Kistner	Individual	100	US$31.97
16 Mar 26	BuyUS$9,249	Mary Jo Herseth	Individual	300	US$30.83
26 Feb 26	SellUS$145,776	John Barkidjija	Individual	4,509	US$32.33
17 Feb 26	BuyUS$24,847	Brian Doran	Individual	750	US$33.13
28 Jan 26	BuyUS$5,244	Phillip Cabrera	Individual	169	US$31.03
28 Oct 25	BuyUS$1,791	William Kistner	Individual	65	US$27.56
28 Oct 25	SellUS$629,147	Thomas Abraham	Individual	23,400	US$26.98
12 Sep 25	SellUS$57,491	Dana Rose	Individual	1,999	US$28.76
08 Aug 25	BuyUS$1,542	William Kistner	Individual	60	US$25.71
13 Jun 25	BuyUS$50,654	Mary Jo Herseth	Individual	2,000	US$25.33
13 Jun 25	BuyUS$4,147	William Kistner	Individual	164	US$25.29
11 Jun 25	BuyUS$58,410	Phillip Cabrera	Individual	2,360	US$24.75
11 Jun 25	BuyUS$102,094	Steven Kent	Individual	4,125	US$24.75
11 Jun 25	BuyUS$1,009,998	Antonio Del Valle Perochena	Individual	40,808	US$24.75
11 Jun 25	BuyUS$99,990	Roberto Herencia	Individual	4,040	US$24.75

Insider Trading Volume

Insider Buying: BY insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of BY?
Owner Type	Number of Shares	Ownership Percentage
State or Government	0	0%
Private Companies	13,613	0.03%
General Public	6,859,810	15.1%
Individual Insiders	13,151,197	29%
Institutions	25,384,639	55.9%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 68.71% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
26.2%	Antonio Del Valle Perochena	11,875,953	US$402.7m	0%	no data
7.26%	BlackRock, Inc.	3,294,923	US$111.7m	0.42%	no data
5.21%	Dimensional Fund Advisors LP	2,366,600	US$80.3m	1.57%	0.01%
2.77%	Vanguard Capital Management, LLC	1,258,599	US$42.7m	0%	no data
2.27%	State Street Global Advisors, Inc.	1,031,062	US$35.0m	3.41%	no data
2.25%	Wellington Management Group LLP	1,023,948	US$34.7m	-14.2%	0.01%
2.02%	Boston Partners Global Investors, Inc.	918,449	US$31.1m	30%	0.02%
1.99%	American Century Investment Management Inc	905,189	US$30.7m	7.69%	0.01%
1.82%	FMR LLC	824,526	US$28.0m	-13.7%	no data
1.74%	Geode Capital Management, LLC	788,033	US$26.7m	3.13%	no data
1.49%	Aristotle Capital Boston, LLC	674,784	US$22.9m	-15.8%	1.33%
1.45%	AQR Capital Management, LLC	657,375	US$22.3m	32%	0.01%
1.4%	T. Rowe Price Group, Inc.	637,678	US$21.6m	7.1%	no data
1.38%	Bridgeway Capital Management, LLC	626,050	US$21.2m	0.9%	0.26%
1.38%	Federated Hermes, Inc.	624,421	US$21.2m	8.85%	0.03%
1.37%	Ararat Capital Management, LP	623,772	US$21.2m	-4.21%	12.68%
1.15%	Roberto Herencia	521,214	US$17.7m	20.8%	no data
0.93%	Teachers Insurance and Annuity Association-College Retirement Equities Fund	420,650	US$14.3m	-5.73%	no data
0.84%	JP Morgan Asset Management	380,063	US$12.9m	-9.45%	no data
0.75%	Qube Research & Technologies Ltd	341,527	US$11.6m	-1.01%	0.02%
0.74%	Vanguard Portfolio Management, LLC	335,839	US$11.4m	0%	no data
0.63%	Millennium Management LLC	287,664	US$9.8m	80.4%	0.01%
0.59%	Charles Schwab Investment Management, Inc.	268,447	US$9.1m	-1.06%	no data
0.59%	Northern Trust Global Investments	266,412	US$9.0m	2.84%	no data
0.54%	The Goldman Sachs Group, Inc.	247,389	US$8.4m	7.25%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2026/06/09 13:43
End of Day Share Price	2026/06/09 00:00
Earnings	2026/03/31
Annual Earnings	2025/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Byline Bancorp, Inc. is covered by 8 analysts. 5 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Ebrahim Poonawala	BofA Global Research
Brendan Nosal	Hovde Group, LLC
Damon DelMonte	Keefe, Bruyette, & Woods