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Klaviyo, Inc.·4

May 20, 8:03 PM ET

Bialecki Andrew 4

4 · Klaviyo, Inc. · Filed May 20, 2026

Research Summary

AI-generated summary of this filing

Updated

Klaviyo (KVYO) CEO Andrew Bialecki Sells 200,000 Shares

What Happened

  • Andrew Bialecki, Klaviyo's Chief Executive Officer, converted Series B common stock into Series A shares and sold 200,000 shares in an open‑market transaction on May 19, 2026. The sales totaled approximately $2,976,000 at a weighted average price of $14.88 per share.
  • The Form 4 also shows related derivative conversion activity (conversion/disposition of Series B shares) connected to the share issuance used for the sale.

Key Details

  • Transaction date: May 19, 2026.
  • Sale: 200,000 shares sold in multiple transactions at prices ranging from $14.68 to $15.41; weighted average $14.88; total proceeds ≈ $2,976,000 (footnote F3).
  • Conversion: Series B common stock convertible into Series A common stock (footnote F2). The filing shows conversion entries reflecting that mechanism.
  • Plan: Transactions were effected under a Rule 10b5‑1 trading plan adopted May 20, 2025 (footnote F1).
  • Trust holdings: Several shares are held in related trusts (footnotes F4–F6); Bialecki disclaims beneficial ownership of those trust shares except to the extent of any pecuniary interest.
  • Shares owned after transaction: not specified in the filing.
  • Filing: Form 4 filed May 20, 2026 for May 19 transactions — appears timely.

Context

  • This was a sale of shares generated by converting Series B into Series A and selling the resulting common shares. Sales executed under a 10b5‑1 plan are pre‑arranged and often represent routine liquidity rather than an immediate personal view on the company. The filing offers to provide a breakdown of how many shares were sold at each price within the reported range upon request (footnote F3).

Insider Transaction Report

Form 4
Period: 2026-05-19
Klaviyo, Inc.KVYO
Bialecki Andrew
DirectorCo-Chief Executive Officer10% Owner
Transactions
  • Conversion

    Series A Common Stock

    [F1][F2]
    2026-05-19+200,000→ 200,000 total
  • Sale

    Series A Common Stock

    [F1][F3]
    2026-05-19$14.88/sh−200,000$2,976,000→ 0 total
  • Conversion

    Series B Common Stock

    [F2][F1]
    2026-05-19−200,000→ 66,944,118 total
    → Series A Common Stock (200,000 underlying)
Holdings

  • Series B Common Stock

    [F2][F4]
    (indirect: By Trust)
    → Series A Common Stock (7,517,410 underlying)
    7,517,410

  • Series B Common Stock

    [F2][F5]
    (indirect: By Trust)
    → Series A Common Stock (517,006 underlying)
    517,006

  • Series B Common Stock

    [F2][F6]
    (indirect: By Trust)
    → Series A Common Stock (517,006 underlying)
    517,006

  • Series B Common Stock

    [F2]
    (indirect: By Spouse)
    → Series A Common Stock (43,218 underlying)
    43,218
Footnotes (6)
  • [F1]These transactions were effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 20, 2025.
  • [F2]Each share of the Issuer's Series B Common Stock, par value $0.001 per share ("Series B Common Stock"), is convertible at any time at the option of the holder into one share of the Issuer's Series A Common Stock, par value $0.001 per share ("Series A Common Stock"), and will automatically convert into one share of Series A Common Stock upon the occurrence of certain events as set forth in the Issuer's certificate of incorporation. The Series B Common Stock has no expiration date.
  • [F3]The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $14.68 to $15.41 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
  • [F4]Shares held by the Andrew P. Bialecki Grantor Retained Annuity Trust I of 2023, of which the Reporting Person serves as trustee. The Reporting Person disclaims Section 16 beneficial ownership of such shares except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed to be an admission that he has beneficial ownership of such shares for Section 16 or any other purpose.
  • [F5]Shares held by the Elizabeth L. Bialecki Irrevocable GST Trust of 2023, of which the Reporting Person serves as a trustee. The Reporting Person disclaims Section 16 beneficial ownership of such shares except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed to be an admission that he has beneficial ownership of such shares for Section 16 or any other purpose.
  • [F6]Shares held by the Andrew P. Bialecki Irrevocable GST Trust of 2023, of which the Reporting Person's spouse serves as a trustee. The Reporting Person disclaims Section 16 beneficial ownership of such shares except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed to be an admission that he has beneficial ownership of such shares for Section 16 or any other purpose.
Signature
/s/ Landon Edmond, Attorney-in-Fact|2026-05-20

Documents

1 file
  • 4
    wk-form4_1779321830.xmlPrimary

    FORM 4