Comparable stake leader
PLATINUM EQUITY, LLC
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001951070.
Comparable stake leader
PLATINUM EQUITY, LLC
Disclosed value leader
Platinum Equity Advisors, LLC/DE
Comparable rows
50/50
Latest evidence
15 Jun 2026
Ownership snapshot
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.
Quick read
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.
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| PLATINUM EQUITY, LLC |
13D/G
3/4/5
10%+ Owner
|
86%
|
$2,072,760,711
165,160,216 shares
|
$0 | 30 Sep 2025 |
| Philip D. Moyer |
3/4/5
President, Chief Executive Officer, Director
|
0.27%
|
$5,746,460
516,768 shares
|
+$249,322 | 15 Jun 2026 |
| Robert Sallmann |
3/4/5
EVP & CFO
|
0.05%
|
$1,482,393
89,842 shares
|
— | 01 Apr 2026 |
| Steven Reinemund |
3/4/5
Director
|
0.04%
|
$1,171,207
84,592 shares
|
+$1,030,721 | 17 Feb 2026 |
| David Cortese |
3/4/5
EVP & CDIO
|
0.02%
|
$735,982
44,605 shares
|
— | 01 Apr 2026 |
| Brian Keith van Dam |
3/4/5
Chief Accounting Officer
|
0%
|
$139,804
8,473 shares
|
— | 01 Apr 2026 |
| Platinum Equity Advisors, LLC/DE |
13F
Company
|
86%
|
$2,262,694,959
165,160,216 shares
|
— | 31 Mar 2026 |
| T. Rowe Price Investment Management, Inc. |
13F
Company
|
3.8%
|
$98,541,000
7,192,740 shares
|
— | 31 Mar 2026 |
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
Net insider flow leans to buying over the last 12 months. Net value: +$1,280,043.
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 22,421 | 0 | $249,322 | $0 | +$249,322 |
| 3-6 | 58,000 | 0 | $794,600 | $0 | +$794,600 |
| 6-9 | 15,710 | 0 | $236,121 | $0 | +$236,121 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Showing 1-18 of 18 reporting-owner rows connected to McGraw Hill, Inc.. Open a relationship link for the CIK-to-CIK filing trail.
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Philip D. Moyer | President, Chief Executive Officer, Director | $5,746,460 | +$249,322 | +4.5% | Filing P/S | 15 Jun 2026 |
| David B. Stafford | EVP, GC & Secretary | $1,662,771 | Mixed | 01 Apr 2026 | ||
| Robert Sallmann | Evp & Cfo | $1,482,393 | Mixed | 01 Apr 2026 | ||
| Steven Reinemund | Director | $1,171,207 | +$1,030,721 | +734% | Mixed | 17 Feb 2026 |
| David Cortese | Evp & Cdio | $735,982 | Mixed | 01 Apr 2026 | ||
| Tracey Tiska | Evp & Chro | $673,893 | Mixed | 01 Apr 2026 | ||
| Brian Keith van Dam | Chief Accounting Officer | $139,804 | Mixed | 01 Apr 2026 | ||
| Matthew Louie | Director | Mixed | 23 Jul 2025 | |||
| Nick Colagiovanni | Director | Mixed | 23 Jul 2025 | |||
| Mary Ann Sigler | Director | Mixed | 25 Jul 2025 | |||
| Brandon Crawley | Director | Mixed | 23 Jul 2025 | |||
| Simon Jonathan Allen | President, CEO, Director | Mixed | 23 Jul 2025 | |||
| Muhammad Ali Jamal | Senior VP & Controller | Mixed | 23 Jul 2025 | |||
| Felicia Alvaro | Director | Mixed | 23 Jul 2025 | |||
| Guhan Subramanian | Director | Mixed | 23 Jul 2025 | |||
| Jacob Kotzubei | Director | Mixed | 23 Jul 2025 | |||
| PLATINUM EQUITY, LLC | 10%+ Owner | Mixed | 23 Jul 2025 | |||
| Eric Alan Worley | Director | Mixed | 09 Feb 2026 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Philip D. Moyer | MH | Common Stock | Purchase | 4.54% | $249,322 | $11.12 | 22,421 | 516,768 | 15 Jun 2026 | Direct |
| Tracey Tiska | MH | Common Stock | Award | 921% | 36,842 | 40,842 | 01 Apr 2026 | Direct | ||
| Brian Keith van Dam | MH | Common Stock | Award | 8,473 | 8,473 | 01 Apr 2026 | Direct | |||
| David B. Stafford | MH | Common Stock | Award | 57.6% | 36,842 | 100,774 | 01 Apr 2026 | Direct | ||
| Robert Sallmann | MH | Common Stock | Award | 2894.7% | 86,842 | 89,842 | 01 Apr 2026 | Direct | ||
| David Cortese | MH | Common Stock | Award | 1684.2% | 42,105 | 44,605 | 01 Apr 2026 | Direct | ||
| Steven Reinemund | MH | Common Stock | Purchase | 369.2% | $794,600 | $13.70 | 58,000 | 73,710 | 17 Feb 2026 | By The Gail T Reinemund Irrevocable Trust FBO |
| Philip D. Moyer | MH | Common Stock | Award | 78.1% | 216,762 | 494,347 | 17 Feb 2026 | Direct | ||
| Philip D. Moyer | MH | Common Stock | Award | 277,585 | 277,585 | 09 Feb 2026 | Direct | |||
| Steven Reinemund | MH | Common Stock | Purchase | $236,121 | $15.03 | 15,710 | 15,710 | 14 Nov 2025 | By The Gail T Reinemund Irrevocable Trust FBO |