Summit Partners L P

13F Holdings History for Klaviyo, Inc. - Series A Common Stock (KVYO)

Symbol: KVYO on NYSE
Investment type: Equity / Series A Common Stock
Latest Disclosed Ownership: 18.9M 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)

2025-11-13 - Summit Partners, L.P. has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 18.9M shares of Klaviyo, Inc. Series A Common Stock (KVYO). This represents 12% percent ownership of the company. In their previous filing dated 2025-08-08, SUMMIT PARTNERS L P had reported owning 30.8M shares, indicating a decrease of -38.8% percent.

Reporting Name	Ownership %	Change	Value $	Shares owned	Change	Activity %	Price	Form	Report date	Filed at
Summit Partners, L.P.	12.03%	-42.1%	$522M	18.9M	-11,975,000	-38.8%	$27.69	13G/A	9/30/2025	13 Nov 2025 16:05:02
Summit Partners, L.P.	20.87%	-30.5%	$1.16B	30.8M	-8,000,000	-20.6%	$37.50	13G/A	6/30/2025	8 Aug 2025 16:33:17
Summit Partners, L.P.	30.02%	-12.1%	$1.13B	38.8M	-2,000,000	-4.9%	$29.07	13G/A	3/31/2025	7 May 2025 16:31:05
Summit Partners, L.P.	34.13%		$1.19B	40.8M			$29.07	13G/A	12/31/2024	7 Feb 2025 19:49:16

Holdings date	Weight	Change	Value $	Shares	Change	Activity %	Price	All Holders
9/30/2025	56.5%	-35.9%	$522M	18.9M	-11,975,000	-38.8%	$27.69	Q3 2025
6/30/2025	73%	-18.9%	$1.04B	30.8M	-8,000,000	-20.6%	$33.58	Q2 2025
3/31/2025	72.9%	-3.75%	$1.17B	38.8M	-2,000,000		$30.26	Q1 2025
12/31/2024	75.4%	-10.3%	$1.68B	40.8M	-5,600,000	-12.1%	$41.24	Q4 2024
9/30/2024	73.3%	-2.08%	$1.64B	46.4M	-1,313,851	-2.75%	$35.38	Q3 2024
6/30/2024	70.7%		$1.19B	47.7M			$24.89	Q2 2024
3/31/2024	67.1%		$1.22B	47.7M			$25.48	Q1 2024
12/31/2023	48.4%	-1.69%	$1.33B	47.7M	-1,770,318	-3.58%	$27.78	Q4 2023
9/30/2023	58.5%	+58.5%	$1.71B	49.5M	+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.