Ledger Susan St. - 10 Sep 2025 Form 4 Insider Report for Klaviyo, Inc. (KVYO)

Role
Director
Signature
/s/ Landon Edmond, Attorney-in-Fact
Issuer symbol
KVYO
Transactions as of
10 Sep 2025
Net transactions value
-$109,899
Form type
4
Filing time
12 Sep 2025, 18:07:48 UTC
Previous filing
11 Jun 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
St. Ledger Susan Director C/O KLAVIYO, INC., 125 SUMMER STREET, 6TH FLOOR, BOSTON /s/ Landon Edmond, Attorney-in-Fact 12 Sep 2025 0001673606

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction KVYO Series A Common Stock Sale $109,899 -3,413 -24% $32.20 10,939 10 Sep 2025 Direct F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 These transactions were effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 11, 2025.
F2 Consists of (i) 5,119 shares of the Issuer's Series A Common Stock, par value $0.001 per share ("Series A Common Stock"), and (ii) 5,820 unvested restricted stock units awarded under the Issuer's 2023 Stock Option and Incentive Plan, each representing the contingent right to receive one share of Series A Common Stock upon vesting and settlement.