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

—

Disclosed value leader

—

Comparable rows

0/0

Latest evidence

—

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
—
Disclosed value leader
—
Comparable rows
0/0
Latest evidence
—
No top shareholder records were found across 13F, 13D/G, and Forms 3/4/5 for this issuer.

Forms 3/4/5 flow

Insider trading overview

No eligible buy or sell activity is available for this window. No eligible Buy or Sell transactions are available in this dataset since 25 Oct 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
01 Oct 2026
Name Relationship Holdings Value Past Year Net Change Change % Valuation Report Date
Erin J. Roth Secretary, Director Mixed 01 Oct 2026
Michael B. Lucareli Director Mixed 01 Oct 2026
Jeremy Michael Patten Chief Executive Officer Mixed 01 Oct 2026
David G. Furlong Vice President, Director Mixed 01 Oct 2026
MODINE MANUFACTURING CO 10%+ Owner Mixed 01 Oct 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
Jeremy Michael Patten Common Stock, par value $0.001 per share Other -100% -1,023 0 01 Oct 2026 Direct
Modine Manufacturing Co Common Stock, par value $0.001 per share Other -100% -53,197,549 0 01 Oct 2026 Direct
David G. Furlong Common Stock, par value $0.001 per share Other -100% -2,568 0 01 Oct 2026 Direct
Erin J. Roth Common Stock, par value $0.001 per share Other -100% -5,266 0 01 Oct 2026 Direct
Michael B. Lucareli Common Stock, par value $0.001 per share Other -100% -89,567 0 01 Oct 2026 Direct
* marks a reported price that did not pass the local price check.
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