SEC ownership of Latham Group, Inc.

Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001833197.

Comparable stake leader

WELLINGTON MANAGEMENT GROUP LLP

Disclosed value leader

Pamplona Capital Management, LLC

Comparable rows

50/50

Latest evidence

30 Jun 2026

Top shareholders Insider holders Latest transactions

Public ticker: SWIM on Nasdaq
Parsed ownership sources: 13F, 13D/G, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
Largest SEC-reported holder: WELLINGTON MANAGEMENT GROUP LLP
Ranking: Comparable ownership first, then disclosed value
Comparable ownership rows: 50 of 50
Meaning: Rows with safely comparable ownership %
Latest 13D/G holder: WELLINGTON MANAGEMENT GROUP LLP
Source: Latest parsed Schedule 13D/G stake
Latest parsed ownership date: 30 Jun 2026
Freshness: Most recent filing date in this holder set
Issuer CIK: 0001833197
Issuer location: Latham, NY

Ownership snapshot

Top shareholders of Latham Group, Inc. (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

WELLINGTON MANAGEMENT GRO...

Disclosed value leader

Pamplona Capital Manageme...

Comparable rows

50/50

Latest evidence

30 Jun 2026

13F 13D/G 3/4/5 Lead comparable stake: 9.7% 13D/G row: WELLINGTON MANAGEMENT GROUP LLP Showing 1-8 of 50 holder rows.

Quick read

WELLINGTON MANAGEMENT GROUP LLP leads the comparable SEC ownership view at 9.7%.

50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens WELLINGTON MANAGEMENT GROUP LLP's linked filing trail.

Comparable ownership Top 5

WELLINGTON MANAGEMENT GROUP LLP 9.7%

Voss Capital, LP 3.9%

James E. Cline 0.66%

Oliver C. Gloe 0.46%

Patrick M. Sheller 0.37%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-8 of 50 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
WELLINGTON MANAGEMENT GROUP LLP	13F 13D/G Company 13F 13D/G	9.7% from 13D/G	$73,525,397 11,364,049 shares	—	30 Jun 2026
Voss Capital, LP	13D/G 13D/G	3.9%	$34,245,000 4,500,000 shares	-$11,161,701	30 Sep 2025
James E. Cline	3/4/5 Director 3/4/5	0.66%	$4,070,412 767,861 shares	+$242,000	19 May 2026
Oliver C. Gloe	3/4/5 CHIEF FINANCIAL OFFICER 3/4/5	0.46%	$2,649,714 540,758 shares	+$73,745	20 May 2026
Patrick M. Sheller	3/4/5 GENERAL COUNSEL & SECRETARY 3/4/5	0.37%	$2,835,574 434,238 shares	—	15 Mar 2026
Sanjeev Bahl	3/4/5 CHIEF OPERATING OFFICER 3/4/5	0.37%	$2,797,053 428,339 shares	—	15 Mar 2026
Kaushal Bhikhesh Dhruv	3/4/5 CIO & CISO 3/4/5	0.34%	$2,589,216 396,511 shares	—	15 Mar 2026
Nikki Vaughan Maczko	3/4/5 Chief Human Resources Officer 3/4/5	0.1%	$634,562 118,168 shares	—	20 May 2026

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Forms 3/4/5 flow

Insider trading overview

Net insider flow leans to buying over the last 12 months. Net value: +$315,745.

Buys

$315,745

Insiders: 2

Sells

Insiders: 0

Net

+$315,745

Shares: +65,050

Window

Last 12 months

4 rolling buckets

Buy value Sell value

Shares: 65,050 Shares: 0

Window (months)	Buy shares	Buy value	Sell value	Net value
0-3	0	$0	$0	$0
3-6	65,050	$315,745	$0	+$315,745
6-9	0	$0	$0	$0
9-12	0	$0	$0	$0

Reporting owners

Insider holders from Forms 3/4/5

Showing 1-20 of 31 reporting-owner rows connected to Latham Group, Inc.. Open a relationship link for the CIK-to-CIK filing trail.

Rows

Largest Forms 3/4/5 holder

Pamplona Capital Partners V, L.P.

Net 12M change

+$315,745

Latest report

17 Aug 2026

Name	Relationship	Holdings Value	Past Year Net Change	Change %	Valuation	Report Date
Pamplona Capital Partners V, L.P.	Director, Other*, 10%+ Owner	$262,510,257			Mixed	02 May 2022
Pamplona Capital Management, LLC	Director, Other*, 10%+ Owner	$262,510,257			Mixed	02 May 2022
WYNNCHURCH CAPITAL PARTNERS IV, L.P.	10%+ Owner	$72,273,233			Filing P/S	14 Mar 2025
Scott Michael Rajeski	CHIEF EXECUTIVE OFFICER, Director	$49,932,575			Mixed	15 Mar 2025
Wynnchurch Partners IV, L.P.	Director, Other*, 10%+ Owner	$37,009,914			Mixed	11 Jan 2022
Christopher Patrick O'Brien	Director, 10%+ Owner	$37,009,914			Mixed	11 Jan 2022
Mark Phillip Laven	Director	$12,704,491			Mixed	01 May 2026
Joshua D. Cowley	Chief Commercial Officer	$5,227,763			Mixed	15 Mar 2025
James E. Cline	Director	$4,070,412	+$242,000	+6.3%	Mixed	19 May 2026
Patrick M. Sheller	General Counsel & Secretary	$2,835,574			Mixed	15 Mar 2026
Sanjeev Bahl	Chief Operating Officer	$2,797,053			Mixed	15 Mar 2026
Oliver C. Gloe	Chief Financial Officer	$2,649,714	+$73,745	+2.9%	Filing P/S	20 May 2026
Kaushal Bhikhesh Dhruv	Cio & Ciso	$2,589,216			Mixed	15 Mar 2026
WC PARTNERS EXECUTIVE IV, L.P.	10%+ Owner	$2,176,630			Filing P/S	14 Mar 2025
Robert Deaton Evans	Director	$2,143,157			Mixed	02 May 2024
J. Mark Borseth	Interim Cfo	$2,024,824			Mixed	24 Jul 2023
Alex Hawkinson	Director	$1,297,459			Mixed	02 May 2023
Melissa Claire Feck	Chief Human Resources Officer	$1,102,032			Mixed	10 Aug 2023
Suzan Morno-Wade	Director	$983,186			Mixed	01 May 2026
DeLu Jackson	Director	$748,257			Mixed	01 May 2026

Recent insider transactions for Latham Group, Inc.

Showing up to 300 recent insider transactions from the last 12 months.

Insider	Symbol	Class	Transaction	%	SEC-reported value	SEC-reported price	Shares	Shares owned	Date	Ownership
Suraj Kunchala	SWIM	Common stock, par value $0.0001 per share	Disposed to Issuer	-10.6%			-8,693	73,743	07 Aug 2026	Direct
Suraj Kunchala	SWIM	Common stock, par value $0.0001 per share	Options Exercise	19.6%			13,483	82,436	07 Aug 2026	Direct
Suraj Kunchala	SWIM	Stock Appreciation Right	Options Exercise	-75%			-13,483	4,495	07 Aug 2026	Direct
Oliver C. Gloe	SWIM	Common stock, par value $0.0001 per share	Purchase	2.86%	$73,745	$4.90	15,050	540,758	20 May 2026	Direct
Nikki Vaughan Maczko	SWIM	Common stock, par value $0.0001 per share	Tax liability	-2.76%			-3,356	118,168	20 May 2026	Direct
James E. Cline	SWIM	Common stock, par value $0.0001 per share	Purchase	100%	$242,000	$4.84	50,000	100,000	19 May 2026	Held by Cynthia L. Cline Revocable Trust
Frank J. Dellaquila	SWIM	Common stock, par value $0.0001 per share	Award	81%			17,677	39,491	01 May 2026	Direct
Mark Phillip Laven	SWIM	Common stock, par value $0.0001 per share	Award	1.72%			17,677	1,044,224	01 May 2026	Direct
DeLu Jackson	SWIM	Common stock, par value $0.0001 per share	Award	20.9%			17,677	102,409	01 May 2026	Direct
Suzan Morno-Wade	SWIM	Common stock, par value $0.0001 per share	Award	15.6%			17,677	130,748	01 May 2026	Direct
Jackson Jeffrey T.	SWIM	Common stock, par value $0.0001 per share	Award				17,677	17,677	01 May 2026	Direct
James E. Cline	SWIM	Common stock, par value $0.0001 per share	Award	12%			22,727	211,978	01 May 2026	Direct
Sanjeev Bahl	SWIM	Common stock, par value $0.0001 per share	Tax liability	-2.27%			-9,970	428,339	15 Mar 2026	Direct
Kaushal Bhikhesh Dhruv	SWIM	Common stock, par value $0.0001 per share	Tax liability	-1.61%			-6,485	396,511	15 Mar 2026	Direct
Suraj Kunchala	SWIM	Common stock, par value $0.0001 per share	Tax liability	-3.04%			-2,162	68,953	15 Mar 2026	Direct
Patrick M. Sheller	SWIM	Common stock, par value $0.0001 per share	Tax liability	-2.24%			-9,943	434,238	15 Mar 2026	Direct
Kaushal Bhikhesh Dhruv	SWIM	Common stock, par value $0.0001 per share	Tax liability	-0.62%			-2,500	402,996	07 Mar 2026	Direct
Sanjeev Bahl	SWIM	Common stock, par value $0.0001 per share	Tax liability	-0.78%			-3,463	438,309	07 Mar 2026	Direct
Oliver C. Gloe	SWIM	Common stock, par value $0.0001 per share	Tax liability	-1.04%			-5,522	525,708	07 Mar 2026	Direct
Suraj Kunchala	SWIM	Common stock, par value $0.0001 per share	Tax liability	-1.36%			-978	71,115	07 Mar 2026	Direct
Nikki Vaughan Maczko	SWIM	Common stock, par value $0.0001 per share	Tax liability	-2.31%			-2,877	121,524	07 Mar 2026	Direct
Patrick M. Sheller	SWIM	Common stock, par value $0.0001 per share	Tax liability	-0.77%			-3,436	444,181	07 Mar 2026	Direct
Kaushal Bhikhesh Dhruv	SWIM	Common stock, par value $0.0001 per share	Award	6.46%			24,604	405,496	06 Mar 2026	Direct
Sanjeev Bahl	SWIM	Common stock, par value $0.0001 per share	Award	12.1%			47,620	441,772	06 Mar 2026	Direct
Oliver C. Gloe	SWIM	Common stock, par value $0.0001 per share	Award	11.4%			54,167	531,230	06 Mar 2026	Direct
Suraj Kunchala	SWIM	Common stock, par value $0.0001 per share	Award	15.2%			9,524	72,093	06 Mar 2026	Direct
Nikki Vaughan Maczko	SWIM	Common stock, par value $0.0001 per share	Award	29.3%			28,175	124,401	06 Mar 2026	Direct
Patrick M. Sheller	SWIM	Common stock, par value $0.0001 per share	Award	11.7%			47,024	447,617	06 Mar 2026	Direct
Kaushal Bhikhesh Dhruv	SWIM	Common stock, par value $0.0001 per share	Award	1.28%			4,797	380,892	05 Mar 2026	Direct
Sanjeev Bahl	SWIM	Common stock, par value $0.0001 per share	Award	2.4%			9,234	394,152	05 Mar 2026	Direct
Oliver C. Gloe	SWIM	Common stock, par value $0.0001 per share	Award	2.24%			10,433	477,063	05 Mar 2026	Direct
Suraj Kunchala	SWIM	Common stock, par value $0.0001 per share	Award	3.05%			1,849	62,569	05 Mar 2026	Direct
Nikki Vaughan Maczko	SWIM	Common stock, par value $0.0001 per share	Award	5.99%			5,436	96,226	05 Mar 2026	Direct
Patrick M. Sheller	SWIM	Common stock, par value $0.0001 per share	Award	2.34%			9,162	400,593	05 Mar 2026	Direct
Patrick M. Sheller	SWIM	Common stock, par value $0.0001 per share	Tax liability	-2.31%			-9,250	391,431	01 Mar 2026	Direct
Kaushal Bhikhesh Dhruv	SWIM	Common stock, par value $0.0001 per share	Tax liability	-1.61%			-6,143	376,095	01 Mar 2026	Direct
Sanjeev Bahl	SWIM	Common stock, par value $0.0001 per share	Tax liability	-2.35%			-9,253	384,918	01 Mar 2026	Direct
Suraj Kunchala	SWIM	Common stock, par value $0.0001 per share	Tax liability	-3.24%			-2,035	60,720	01 Mar 2026	Direct
Sean Gadd	SWIM	Stock Appreciation Right	Award				907,591	907,591	05 Jan 2026	Direct

^* marks a reported price that did not pass the local price check.