SEC ownership of Platinum SpinCo, Inc.

Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0002134183.

Comparable stake leader

MODINE MANUFACTURING CO

Disclosed value leader

Comparable rows

0/1

Latest evidence

12 Aug 2026

Ownership snapshot CIK-linked ownership evidence from parsed SEC filings. 1 signal
Latest parsed ownership date
12 Aug 2026
Freshness: Most recent filing date in this holder set
Issuer Names, identifiers, and filing context for this profile. 2 identity fields
Issuer CIK
0002134183
Issuer location
Racine, WI

Ownership snapshot

Top shareholders of Platinum SpinCo, 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
MODINE MANUFACTURING CO
Disclosed value leader
Comparable rows
0/1
Latest evidence
12 Aug 2026
3/4/5 Some rows are evidence-backed but not safely comparable across classes. 1 rows are not safely comparable across share classes.

Quick read

SEC ownership evidence is available, but the rows are not safely comparable across share classes.

0 of 1 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 MODINE MANUFACTURING CO's linked filing trail.
Detailed SEC evidence table Showing 1-1 of 1 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
MODINE MANUFACTURING CO
3/4/5
10%+ Owner
class O/S missing
1,000 shares
12 Aug 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

Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 17 Aug 2025.

Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value Sell value
Shares: 0 Shares: 0
Window (months) Buy shares Sell shares Buy value Sell value Net value
0-3 0 0 $0 $0 $0
3-6 0 0 $0 $0 $0
6-9 0 0 $0 $0 $0
9-12 0 0 $0 $0 $0

Reporting owners

Insider holders from Forms 3/4/5

Showing 1-6 of 6 reporting-owner rows connected to Platinum SpinCo, Inc.. Open a relationship link for the CIK-to-CIK filing trail.

Rows
6
Largest Forms 3/4/5 holder
Erin J. Roth
Net 12M change
$0
Latest report
12 Aug 2026
Name Relationship Holdings Value Past Year Net Change Change % Valuation Report Date
Erin J. Roth Secretary, Director Mixed 12 Aug 2026
Michael B. Lucareli Director Mixed 12 Aug 2026
Jeremy Michael Patten Chief Executive Officer Mixed 12 Aug 2026
David G. Furlong Director Mixed 12 Aug 2026
MODINE MANUFACTURING CO 10%+ Owner Mixed 12 Aug 2026
Scott C. Reaume Treasurer Mixed 12 Aug 2026

Recent insider transactions for Platinum SpinCo, 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
Modine Manufacturing Co Common Stock, par value $0.001 per share 0 1,000 12 Aug 2026 Direct
* marks a reported price that did not pass the local price check.
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