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Byline Bancorp, Inc. (BY) institutional ownership

Latest close $37.87 Jul 20, 2026
Market cap$1.1B 52-week range SectorFinancial Services
Funds holding · Q1 2026
159
reported BY position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Activity unavailable N/A
87 buyers · 72 sellers

Byline Bancorp, Inc. (BY) price and institutional activity

Dates

Q1 2026

$0 bought by 87 investors
Assenagon Asset Management S.A.Boston Partners +85 more
$0 sold by 72 investors
Wellington Management Group LLPFMR LLC +70 more
Bought Sold Totals per quarter; hover a bar for the names.

Byline Bancorp, Inc. (BY) institutional activity · 159

Investor Type Est. change Change Δ Own Date
Assenagon Asset Management S.A. · New
Change +227K Date Q1 2026
Assenagon Asset Management S.A. New· Q1 2026 +227K Q1 2026
Boston Partners · Added
Change +212K Date Q1 2026
Boston Partners Added· Q1 2026 +212K Q1 2026
Wellington Management Group LLP · Reduced
Change −170K Δ Own −14.2% Date Q1 2026
Wellington Management Group LLP Reduced· Q1 2026 −170K −14.2% Q1 2026
AQR Capital Management LLC · Added
Change +160K Date Q1 2026
AQR Capital Management LLC Added· Q1 2026 +160K Q1 2026
Zacks Investment Management · New
Change +131K Date Q1 2026
Zacks Investment Management New· Q1 2026 +131K Q1 2026
FMR LLC · Reduced
Change −130K Δ Own −13.6% Date Q1 2026
FMR LLC Reduced· Q1 2026 −130K −13.6% Q1 2026
Millennium Management LLC · Added
Change +128K Date Q1 2026
Millennium Management LLC Added· Q1 2026 +128K Q1 2026
Aristotle Capital Boston, LLC · Reduced
Change −126K Date Q1 2026
Aristotle Capital Boston, LLC Reduced· Q1 2026 −126K Q1 2026
Renaissance Technologies LLC Exited· Q1 2026 −112K −100.0% Q1 2026
JPMorgan Chase & Co · Reduced
Change −111K Date Q1 2026
JPMorgan Chase & Co Reduced· Q1 2026 −111K Q1 2026
Cresset Asset Management, LLC · Reduced
Change −89K Date Q1 2026
Cresset Asset Management, LLC Reduced· Q1 2026 −89K Q1 2026
Point72 Asset Management, L.P. · Reduced
Change −81K Δ Own −62.8% Date Q1 2026
Point72 Asset Management, L.P. Reduced· Q1 2026 −81K −62.8% Q1 2026
UBS Group AG · Added
Change +66K Date Q1 2026
UBS Group AG Added· Q1 2026 +66K Q1 2026
American Century Companies Inc · Added
Change +65K Date Q1 2026
American Century Companies Inc Added· Q1 2026 +65K Q1 2026
Morgan Stanley · Reduced
Change −60K Date Q1 2026
Morgan Stanley Reduced· Q1 2026 −60K Q1 2026
Data through Q1 2026 · filed Jun 2, 2026
15 of 159

Famous investor activity in Byline Bancorp, Inc. (BY)

Byline Bancorp, Inc. (BY) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Sacristan Carlos Ruiz · Director Grant (A) 2K
Owned 14K Trade date Jun 8, 2026 Filed date Jun 10, 2026
Sacristan Carlos Ruiz Director Grant (A) 2K 14K Jun 8, 2026 Jun 10, 2026
Hugues Velez Margarita · Director Grant (A) 2K
Owned 9K Trade date Jun 8, 2026 Filed date Jun 10, 2026
Hugues Velez Margarita Director Grant (A) 2K 9K Jun 8, 2026 Jun 10, 2026
Hugues Velez Margarita · Director Tax withholding or exercise payment (F) -$18K
Price $33.41 Qty -530 Owned 7K Trade date Jun 2, 2026 Filed date Jun 3, 2026
Hugues Velez Margarita Director Tax withholding or exercise payment (F) $33.41 -530 -$18K 7K Jun 2, 2026 Jun 3, 2026
Kistner William G. · Director Buy +$3K
Price $31.97 Qty +100 Owned 14K Trade date May 4, 2026 Filed date May 4, 2026
Kistner William G. Director Buy $31.97 +100 +$3K 14K May 4, 2026 May 4, 2026
Abraham Thomas · Officer Grant (A) 2K
Owned 46K Trade date Apr 16, 2026 Filed date Apr 20, 2026
Abraham Thomas Officer Grant (A) 2K 46K Apr 16, 2026 Apr 20, 2026
Herseth Mary Jo S. · Director Buy +$9K
Price $30.83 Qty +300 Owned 19K Trade date Mar 16, 2026 Filed date Mar 16, 2026
Herseth Mary Jo S. Director Buy $30.83 +300 +$9K 19K Mar 16, 2026 Mar 16, 2026
Barkidjija John · Officer Sell −$146K
Price $32.33 Qty −5K Owned 19K Trade date Feb 26, 2026 Filed date Mar 2, 2026
Barkidjija John Officer Sell $32.33 −5K −$146K 19K Feb 26, 2026 Mar 2, 2026
Mando Nicolas · Officer 2 operations -$47K
Price $33.13 Qty -1K Owned 16K Trade date Feb 22, 2026 Filed date Feb 24, 2026
Mando Nicolas Officer 2 operations $33.13 -1K -$47K 16K Feb 22, 2026 Feb 24, 2026
Mando Nicolas · Officer 2 operations 4K
Owned 16K Trade date Feb 22, 2026 Filed date Feb 24, 2026
Mando Nicolas Officer 2 operations 4K 16K Feb 22, 2026 Feb 24, 2026
Fucinato Mark · Officer 2 operations -$78K
Price $33.13 Qty -2K Owned 23K Trade date Feb 22, 2026 Filed date Feb 24, 2026
Fucinato Mark Officer 2 operations $33.13 -2K -$78K 23K Feb 22, 2026 Feb 24, 2026
Fucinato Mark · Officer 2 operations 6K
Owned 26K Trade date Feb 22, 2026 Filed date Feb 24, 2026
Fucinato Mark Officer 2 operations 6K 26K Feb 22, 2026 Feb 24, 2026
Paracchini Alberto J. · Director, Officer 2 operations -$204K
Price $33.13 Qty -6K Owned 189K Trade date Feb 22, 2026 Filed date Feb 24, 2026
Paracchini Alberto J. Director, Officer 2 operations $33.13 -6K -$204K 189K Feb 22, 2026 Feb 24, 2026
Paracchini Alberto J. · Director, Officer 2 operations 19K
Owned 197K Trade date Feb 22, 2026 Filed date Feb 24, 2026
Paracchini Alberto J. Director, Officer 2 operations 19K 197K Feb 22, 2026 Feb 24, 2026
Herencia Roberto R. · Director 2 operations -$569K
Price $33.13 Qty -17K Owned 431K Trade date Feb 22, 2026 Filed date Feb 24, 2026
Herencia Roberto R. Director 2 operations $33.13 -17K -$569K 431K Feb 22, 2026 Feb 24, 2026
Herencia Roberto R. · Director 2 operations 55K
Owned 441K Trade date Feb 22, 2026 Filed date Feb 24, 2026
Herencia Roberto R. Director 2 operations 55K 441K Feb 22, 2026 Feb 24, 2026
15 of 42
15 of 42 Sign in to continue to older insider transactions.

Byline Bancorp, Inc. (BY) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
Mbg Investors I, L.P. 11.8M
% of shares outstanding 27.0% Filing date Feb 12, 2024
Mbg Investors I, L.P. 11.8M 27.0% Feb 12, 2024
Estate of Daniel L. Goodwin 4.3M
% of shares outstanding 9.7% Filing date Nov 14, 2024
Estate of Daniel L. Goodwin 4.3M 9.7% Nov 14, 2024
BlackRock Inc. 2.4M
% of shares outstanding 5.6% Filing date Jan 31, 2024
BlackRock Inc. 2.4M 5.6% Jan 31, 2024
Clariond Eugenio 2.0M
% of shares outstanding 4.6% Filing date Mar 19, 2024
Clariond Eugenio 2.0M 4.6% Mar 19, 2024
4 of 4

Byline Bancorp, Inc. (BY) ownership FAQ

Who owns BY?

159 reporting institutions disclosed BY position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.