Form4insider filings, from the source

Company · CIK 0002115119 · SIC 6035 — Savings Institution, Federally Chartered · Nasdaq

Columbia Financial, Inc./MD/ · CLBK

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $4.8M · 17sales $0 · 0net $4.8M
$10k$10k$100k$100k$1M$1M$10M$10MbuyssalesSep 2025Nov 2025Jan 2026Mar 2026May 2026Jul 2026Sep 2026

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 18, 2026 AForm 4 →Sep 22, 7:31 am EDTJohn KlimowichSEVP & Chief Risk Officer59$11.58$68520,728—
Sep 18, 2026 AForm 4 →Sep 22, 7:30 am EDTThomas J. KemlyPresident & CEO, Director160$11.58$1,858154,797—
Sep 4, 2026 AForm 4 →Sep 9, 12:20 pm EDTJohn KlimowichSEVP & Chief Risk Officer59$11.70$68520,669—
Sep 4, 2026 AForm 4 →Sep 9, 12:20 pm EDTThomas J. KemlyPresident & CEO, Director159$11.70$1,858154,636—
Sep 4, 2026 AForm 4 →Sep 9, 12:20 pm EDTNoel R. HollandDirector15$11.70$17029,833—
Sep 3, 2026 GForm 4 →Sep 4, 1:15 pm EDTNoel R. HollandDirector20——80,797—
Sep 3, 2026 PForm 4 →Sep 4, 1:15 pm EDTNoel R. HollandDirector20$11.68$23480,817+0.02%
Aug 26, 2026 AForm 4 →Aug 28, 2:21 pm EDTManesh Balachandran PrabhuEVP & CIO10$11.62$1122,259—
Aug 26, 2026 AForm 4 →Aug 28, 2:21 pm EDTAllyson Katz SchlesingerSEVP&Head of Consumer Banking172$11.62$2,00110,347—
Aug 26, 2026 AForm 4 →Aug 28, 2:20 pm EDTLucy SorrentiniDirector73$11.62$84516,970—
Aug 26, 2026 AForm 4 →Aug 28, 2:20 pm EDTOliver Edward Lewis Jr.SEVP & Head Commercial Banking52$11.62$6091,503—
Aug 26, 2026 AForm 4 →Aug 28, 2:20 pm EDTNoel R. HollandDirector128$11.62$1,48529,818—
Aug 26, 2026 AForm 4 →Aug 28, 2:20 pm EDTThomas J. KemlyPresident & CEO, Director1,053$11.62$12,23891,850—
Aug 26, 2026 AForm 4 →Aug 28, 2:19 pm EDTJohn KlimowichSEVP & Chief Risk Officer127$11.62$1,4769,309—
Aug 26, 2026 AForm 4 →Aug 28, 2:19 pm EDTElizabeth E. RandallDirector212$11.62$2,45949,396—
Aug 26, 2026 AForm 4 →Aug 28, 2:19 pm EDTDennis E. Gibney1st Sr. EVP, CBO, Director18$11.62$2154,316—
Aug 21, 2026 AForm 4 →Aug 25, 2:49 pm EDTJohn KlimowichSEVP & Chief Risk Officer58$11.79$68520,523—
Aug 21, 2026 AForm 4 →Aug 25, 2:48 pm EDTThomas J. KemlyPresident & CEO, Director158$11.79$1,858153,816—
Aug 7, 2026 AForm 4 →Aug 11, 3:45 pm EDTNoel R. HollandDirector16$10.84$17029,690—
Aug 7, 2026 AForm 4 →Aug 11, 3:45 pm EDTJohn KlimowichSEVP & Chief Risk Officer63$10.84$68520,465—
Aug 7, 2026 AForm 4 →Aug 11, 3:45 pm EDTThomas J. KemlyPresident & CEO, Director171$10.84$1,858153,659—
Jul 24, 2026 AForm 4 →Jul 28, 3:22 pm EDTJohn KlimowichSEVP & Chief Risk Officer63$10.88$68520,402—
Jul 24, 2026 AForm 4 →Jul 28, 3:22 pm EDTThomas J. KemlyPresident & CEO, Director171$10.88$1,858153,488—
Jul 20, 2026 PForm 4 →Jul 22, 9:24 pm EDTRobert Van DykDirector25,000$10.00$250,000322,013+8.42%
Jul 20, 2026 PForm 4 →Jul 22, 9:23 pm EDTJim Hobart WainwrightDirector10,000$10.00$100,00017,055+142%
Jul 20, 2026 PForm 4 →Jul 22, 9:23 pm EDTMichael Massood Jr.Director25,000$10.00$250,00093,063+36.7%10b5-1
Jul 20, 2026 PForm 4 →Jul 22, 9:23 pm EDTOliver Edward Lewis Jr.SEVP & Head Commercial Banking15,000$10.00$150,00014,500—
Jul 20, 2026 PForm 4 →Jul 22, 9:22 pm EDTSteven M KleinSr. EVP, COO, Director50,000$10.00$500,000711,570+7.56%
Jul 20, 2026 PForm 4 →Jul 22, 9:22 pm EDTElizabeth E. RandallDirector49,980$10.00$499,80049,184—
Jul 20, 2026 PForm 4 →Jul 22, 9:22 pm EDTLucy SorrentiniDirector20,000$10.00$200,00020,000—
Jul 20, 2026 PForm 4 →Jul 22, 9:21 pm EDTJohn KlimowichSEVP & Chief Risk Officer35,000$10.00$350,00067,686+107%
Jul 20, 2026 PForm 4 →Jul 22, 9:21 pm EDTAllyson Katz SchlesingerSEVP&Head of Consumer Banking50,000$10.00$500,0005,600—
Jul 20, 2026 PForm 4 →Jul 22, 9:20 pm EDTThomas Splaine Jr.EVP, CFO50,000$10.00$500,00050,862+5,800%
Jul 20, 2026 PForm 4 →Jul 22, 9:20 pm EDTThomas J. KemlyPresident & CEO, Director53,057$10.00$530,570103,138+106%
Jul 20, 2026 PForm 4 →Jul 22, 9:20 pm EDTNoel R. HollandDirector15,000$10.00$150,000109,316+15.9%
Jul 20, 2026 PForm 4 →Jul 22, 9:19 pm EDTManesh Balachandran PrabhuEVP & CIO15,000$10.00$150,00015,000—
Jul 20, 2026 PForm 4 →Jul 22, 9:19 pm EDTJames Michael KuikenDirector10,000$10.00$100,00010,000—
Jul 20, 2026 PForm 4 →Jul 22, 9:18 pm EDTMayra Liseth RinaldiEVP, Corp Governance & Culture10,337$10.00$103,370118—
Jul 20, 2026 PForm 4 →Jul 22, 9:17 pm EDTDennis E. Gibney1st Sr. EVP, CBO, Director44,500$10.00$445,00011,500—

Reported at this company — derivatives (options, RSUs, warrants)

No reported derivative activity in this period.