13F Pro

SEC Form 4 reporting owner

Bialecki Andrew

Bialecki Andrew has filed 50 Form 4 transactions reported between November 24, 2025 and May 26, 2026, as Co-Chief Executive Officer, Chief Executive Officer of Klaviyo, Inc..

Name as filed: Bialecki Andrew

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$44.4M
24 lines
Companies
1
with Form 4 filings
Latest transaction
May 26, 2026
transaction date

Roles and reported holdings

  • KVYOKlaviyo, Inc.
    Nov 24, 2025 – May 26, 2026

    Co-Chief Executive Officer, Chief Executive Officer

    Held directly0 sh as of May 12, 2026 · Form 4

    24 months: $44.4M sold

Transaction history

All 50 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
May 26, 2026KVYOCo-Chief Executive OfficerConversion of derivativeCode C · direct212,529—Form 4
May 19, 2026KVYOCo-Chief Executive OfficerConversion of derivativeCode C · direct200,000—Form 4
May 12, 2026KVYOCo-Chief Executive OfficerOpen-market saleCode S · direct141,316$2.0M@ $14.46Form 4
May 12, 2026KVYOCo-Chief Executive OfficerOpen-market saleCode S · direct58,684$878K@ $14.97Form 4
May 12, 2026KVYOCo-Chief Executive OfficerConversion of derivativeCode C · direct200,000—Form 4
Apr 14, 2026KVYOCo-Chief Executive OfficerOpen-market saleCode S · direct90,858$1.5M@ $16.94Form 4
Apr 14, 2026KVYOCo-Chief Executive OfficerOpen-market saleCode S · direct109,142$1.9M@ $17.39Form 4
Apr 14, 2026KVYOCo-Chief Executive OfficerConversion of derivativeCode C · direct200,000—Form 4
Apr 7, 2026KVYOCo-Chief Executive OfficerConversion of derivativeCode C · direct200,000—Form 4
Mar 31, 2026KVYOCo-Chief Executive OfficerConversion of derivativeCode C · direct200,000—Form 4
Mar 24, 2026KVYOCo-Chief Executive OfficerConversion of derivativeCode C · direct200,000—Form 4
Mar 17, 2026KVYOCo-Chief Executive OfficerOpen-market saleCode S · direct102,621$2.0M@ $19.15Form 4
Mar 17, 2026KVYOCo-Chief Executive OfficerOpen-market saleCode S · direct97,379$1.9M@ $19.60Form 4
Mar 17, 2026KVYOCo-Chief Executive OfficerConversion of derivativeCode C · direct200,000—Form 4
Mar 10, 2026KVYOCo-Chief Executive OfficerOpen-market saleCode S · direct700$14K@ $19.34Form 4
Mar 10, 2026KVYOCo-Chief Executive OfficerOpen-market saleCode S · direct206,127$4.1M@ $19.96Form 4
Mar 10, 2026KVYOCo-Chief Executive OfficerConversion of derivativeCode C · direct206,827—Form 4
Mar 3, 2026KVYOCo-Chief Executive OfficerOpen-market saleCode S · direct45,978$823K@ $17.90Form 4
Mar 3, 2026KVYOCo-Chief Executive OfficerOpen-market saleCode S · direct154,022$2.9M@ $18.86Form 4
Mar 3, 2026KVYOCo-Chief Executive OfficerConversion of derivativeCode C · direct200,000—Form 4
Feb 24, 2026KVYOCo-Chief Executive OfficerOpen-market saleCode S · direct39,644$649K@ $16.38Form 4
Feb 24, 2026KVYOCo-Chief Executive OfficerOpen-market saleCode S · direct160,356$2.7M@ $16.86Form 4
Feb 24, 2026KVYOCo-Chief Executive OfficerConversion of derivativeCode C · direct200,000—Form 4
Jan 27, 2026KVYOCo-Chief Executive OfficerOpen-market saleCode S · direct4,530$113K@ $24.94Form 4
Jan 27, 2026KVYOCo-Chief Executive OfficerOpen-market saleCode S · direct150,689$3.8M@ $25.34Form 4
Jan 27, 2026KVYOCo-Chief Executive OfficerConversion of derivativeCode C · direct155,219—Form 4
Jan 20, 2026KVYOCo-Chief Executive OfficerOpen-market saleCode S · direct796$19K@ $23.29Form 4
Jan 20, 2026KVYOCo-Chief Executive OfficerOpen-market saleCode S · direct167,130$4.0M@ $24.16Form 4
Jan 20, 2026KVYOCo-Chief Executive OfficerConversion of derivativeCode C · direct167,926—Form 4
Jan 13, 2026KVYOCo-Chief Executive OfficerOpen-market saleCode S · direct90,327$2.5M@ $27.29Form 4
Jan 13, 2026KVYOCo-Chief Executive OfficerOpen-market saleCode S · direct50,319$1.4M@ $27.62Form 4
Jan 13, 2026KVYOCo-Chief Executive OfficerConversion of derivativeCode C · direct140,646—Form 4
Jan 7, 2026KVYOCo-Chief Executive OfficerConversion of derivativeCode C · direct16,649—Form 4
Jan 6, 2026KVYOCo-Chief Executive OfficerOpen-market saleCode S · direct2,382$68K@ $28.52Form 4
Jan 6, 2026KVYOCo-Chief Executive OfficerOpen-market saleCode S · direct135,122$3.9M@ $28.92Form 4
Jan 6, 2026KVYOCo-Chief Executive OfficerConversion of derivativeCode C · direct137,504—Form 4
Dec 22, 2025KVYOChief Executive OfficerOpen-market saleCode S · direct6,934$221K@ $31.94Form 4
Dec 22, 2025KVYOChief Executive OfficerOpen-market saleCode S · direct93,066$3.1M@ $33.05Form 4
Dec 22, 2025KVYOChief Executive OfficerConversion of derivativeCode C · direct100,000—Form 4
Dec 17, 2025KVYOChief Executive OfficerConversion of derivativeCode C · direct100,000—Form 4
Dec 16, 2025KVYOChief Executive OfficerConversion of derivativeCode C · direct138,648—Form 4
Dec 11, 2025KVYOChief Executive OfficerConversion of derivativeCode C · direct3,419,000—Form 4
Dec 11, 2025KVYOChief Executive OfficerConversion of derivativeCode C · direct17,777—Form 4
Dec 10, 2025KVYOChief Executive OfficerConversion of derivativeCode C · direct82,223—Form 4
Dec 9, 2025KVYOChief Executive OfficerOpen-market saleCode S · direct800$23K@ $28.84Form 4
Dec 9, 2025KVYOChief Executive OfficerOpen-market saleCode S · direct130,562$3.8M@ $29.42Form 4
Dec 9, 2025KVYOChief Executive OfficerConversion of derivativeCode C · direct131,362—Form 4
Dec 4, 2025KVYOChief Executive OfficerConversion of derivativeCode C · direct952—Form 4
Dec 2, 2025KVYOChief Executive OfficerConversion of derivativeCode C · direct142,045—Form 4
Nov 24, 2025KVYOChief Executive OfficerConversion of derivativeCode C · direct144,717—Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.