SUMMIT PARTNERS L P

Holdings History for Klaviyo, Inc. - Series A Common Stock (KVYO)

Symbol: KVYO on NYSE
Investment type: Equity / Series A Common Stock
Latest Disclosed Shares Owned: 18,852,778 shares
Security Ownership %: 12%

Shares, Excluding Options vs Price

Value, Excluding Options

Summit Partners, L.P. ownership in Klaviyo, Inc. Series A Common Stock (KVYO)

13 Nov 2025 - Summit Partners, L.P. has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 18,852,778 shares of Klaviyo, Inc. Series A Common Stock (KVYO). This represents 12% ownership of the company. In their previous filing dated 08 Aug 2025, SUMMIT PARTNERS L P had reported owning 30,827,778 shares, indicating a decrease of +39%. .

Reporting Name	Ownership %	Change	Value $	Shares owned	Change	Activity %	Price	Form	Report date	Filing time
Summit Partners, L.P.	12%	-42%	$522,033,423	18,852,778	-11,975,000	-39%	$27.69	13G/A	30 Sep 2025	13 Nov 2025, 16:05
Summit Partners, L.P.	21%	-30%	$1,046,603,063	30,827,778	-8,000,000	-21%	$33.95	13G/A	30 Jun 2025	08 Aug 2025, 16:33
Summit Partners, L.P.	30%	-12%	$1,123,675,895	38,827,778	-2,000,000	-4.9%	$28.94	13G/A	31 Mar 2025	07 May 2025, 16:31
Summit Partners, L.P.	34%		$1,181,555,895	40,827,778			$28.94	13G/A	31 Dec 2024	07 Feb 2025, 19:49

Holdings date	Weight	Change	Value $	Shares	Change	Activity %	Price	All Holders
30 Sep 2025	56%	-36%	$522,033,423	18,852,778	-11,975,000	-39%	$27.69	Q3 2025
30 Jun 2025	73%	-19%	$1,035,196,785	30,827,778	-8,000,000	-21%	$33.58	Q2 2025
31 Mar 2025	73%	-3.8%	$1,174,928,562	38,827,778	-2,000,000		$30.26	Q1 2025
31 Dec 2024	75%	-10%	$1,683,737,565	40,827,778	-5,600,000	-12%	$41.24	Q4 2024
30 Sep 2024	73%	-2.1%	$1,642,614,786	46,427,778	-1,313,851	-2.8%	$35.38	Q3 2024
30 Jun 2024	71%	0%	$1,188,289,146	47,741,629	0		$24.89	Q2 2024
31 Mar 2024	67%	0%	$1,216,456,707	47,741,629	0		$25.48	Q1 2024
31 Dec 2023	48%	-1.8%	$1,326,262,454	47,741,629	-1,770,318	-3.6%	$27.78	Q4 2023
30 Sep 2023	59%	+59%	$1,708,162,172	49,511,947	+49,511,947	NEW	$34.50	Q3 2023

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.