Andrew Bialecki - May 14, 2025 Form 4 Insider Report for Klaviyo, Inc. (KVYO)

Role
Chief Executive Officer, Director, 10%+ Owner
Signature
/s/ Landon Edmond, Attorney-in-Fact
Stock symbol
KVYO
Transactions as of
May 14, 2025
Transactions value $
-$360,559,956
Form type
4
Date filed
5/16/2025, 08:59 PM
Previous filing
Sep 20, 2023
Next filing
Jun 11, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Bialecki Andrew Chief Executive Officer, Director, 10%+ Owner C/O KLAVIYO, INC., 125 SUMMER STREET, 6TH FLOOR, BOSTON /s/ Landon Edmond, Attorney-in-Fact 2025-05-16 0001991099

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction KVYO Series A Common Stock Conversion of derivative security $0 +11M $0.00 11M May 14, 2025 Direct
transaction KVYO Series A Common Stock Sale -$361M -11M -100% $32.90 0 May 16, 2025 Direct F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction KVYO Stock Option (Right to Buy) Options Exercise $0 -15.8M -100% $0.00 0 May 14, 2025 Series B Common Stock 15.8M $0.01 Direct F2
transaction KVYO Stock Option (Right to Buy) Options Exercise $0 -5.6M -100% $0.00 0 May 14, 2025 Series B Common Stock 5.6M $0.01 Direct F2
transaction KVYO Series B Common Stock Options Exercise $268K +21.4M +33.27% $0.01 85.8M May 14, 2025 Series A Common Stock 21.4M Direct F3, F4
transaction KVYO Series B Common Stock Conversion of derivative security $0 -11M -12.78% $0.00 74.9M May 14, 2025 Series A Common Stock 11M Direct F3
holding KVYO Series B Common Stock 11.9M May 14, 2025 Series A Common Stock 11.9M By The Andrew P. Bialecki Grantor Retained Annuity Trust I of 2023 F3, F4, F5
holding KVYO Series B Common Stock 517K May 14, 2025 Series A Common Stock 517K By The Elizabeth L. Bialecki Irrevocable GST Trust of 2023 F3, F6
holding KVYO Series B Common Stock 517K May 14, 2025 Series A Common Stock 517K By The Andrew P. Bialecki Irrevocable GST Trust of 2023 F3, F7
holding KVYO Series B Common Stock 43.2K May 14, 2025 Series A Common Stock 43.2K By spouse F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Represents shares of the Issuer's Series A Common Stock, par value $0.001 per share ("Series A Common Stock"), sold in an underwritten registered offering, the proceeds of which were used to satisfy taxes incurred in connection with stock option exercises.
F2 The shares underlying this option were fully vested and exercisable by the Reporting Person as of the date exercised.
F3 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 Series A Common Stock and will automatically convert into 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.
F4 Reflects 4,054,170 shares of Series B Common Stock previously transferred from the Andrew P. Bialecki Grantor Retained Annuity Trust I of 2023 to the Reporting Person.
F5 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.
F6 Shares held by the Elizabeth L. Bialecki Irrevocable GST Trust 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.
F7 Shares held by the Andrew P. Bialecki Irrevocable GST Trust of 2023, of which the Reporting Person's spouse 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.