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Platinum Equity Investment Holdings, LLC

CIK 1634372 · last filed 2023-03-01

Platinum Equity Investment Holdings, LLC is a corporate insider who has filed 5 SEC Form 4 insider transactions across 3 companies since 2019. The most recent filing shows the insider sold $1.12B of RYI on Mar 1, 2023. Across all open-market trades the lifetime net is −$8.69B, making them a net seller over the disclosed history. Current disclosed insider exposure totals $47.8M across reported positions. The firm reports its address in Beverly Hills, CA. 37 SEC filings were submitted jointly with PLATINUM EQUITY, LLC.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$47.82M

Companies

3

Total Filings

5

Lifetime Open-Market Net

-$8.69B

Filer Profile

Reported Address
C/O PLATINUM EQUITY
360 NORTH CRESCENT DRIVE
BEVERLY HILLS, CA 90210
Phone
(310) 712-1195
State of Incorporation
DE
Related Filers
PLATINUM EQUITY, LLC — 37 joint filings, latest 2026-06-17
Tom Gores — 31 joint filings, latest 2026-06-17
Platinum Equity Investment Holdings IC (Cayman), LLC — 30 joint filings, latest 2026-06-17
Platinum Equity InvestCo, L.P. — 27 joint filings, latest 2026-06-17
Platinum InvestCo (Cayman), LLC — 13 joint filings, latest 2025-02-03
Platinum Equity Investment Holdings V, LLC — 11 joint filings, latest 2026-06-17
PE Vertiv Holdings, LLC — 10 joint filings, latest 2024-03-01
Platinum Equity Investment Holdings III, LLC — 10 joint filings, latest 2024-03-01
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
Ryerson Holding Corp (RYI) Delisted 10%+ Owner 11,924,478 $28.16 $335.79M -$1.12B 1 2023-03-01
VRRM Director 11,748,165 $4.07 $47.82M -$134.40M 3 2021-08-27
Custom Truck One Source, Inc. (NSCO.WS) Delisted 10%+ Owner 148,600,000 $2.01 $298.69M -$7.43B 1 2021-04-05

Recent Filings

5 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2023-03-01 Ryerson Holding Corp (RYI) Delisted Sell (S) −32,000,000 -$1.12B EDGAR
2021-08-27 VRRM Sell (S) −3,600,000 -$52.56M EDGAR
2021-04-05 Custom Truck One Source, Inc. (NSCO.WS) Delisted Buy (P) −1,486,000,000 -$7.43B EDGAR
2020-02-05 VRRM Exer (X) +7,500,000 $116.25M EDGAR
2019-07-10 VRRM Sell (S) −6,750,000 -$81.84M EDGAR
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.