Platinum SpinCo, Inc.: 10% owner Modine Manufacturing Co sold 53,197,549 shares

What happened

• Modine Manufacturing Co, a 10% owner, distributed 53,197,549 shares of Platinum SpinCo, Inc. on Oct 1, 2026. The filing shows no price and no total value.

Key details

• Transaction date: Oct 1, 2026; transaction code: J (other acquisition or disposition); price: not specified.
• Shares owned after the transaction: 0 shares.
• Footnote F1: reflects adjusted share counts after the issuer's stock split effective Sep 29, 2026.
• Footnote F2: the reporting person distributed all shares reported in Table I to its public shareholders of record as of Sep 28, 2026, for no consideration, pursuant to the Separation Agreement dated Jan 29, 2026, among the reporting person, the issuer and Gentherm Incorporated.
• Form filed Oct 5, 2026; the filing was late relative to the Oct 1, 2026 transaction.

Why it may matter

• This was a distribution for no consideration; it was not a market sale.
• As a 10% owner, the reporting person is a large holder rather than a company executive.
• A filing does not show why the insider traded or why the company acted.