| # | Holder | Shares | % of Shares Out | Change | Filing Date |
|---|---|---|---|---|---|
| 1 |
Platinum Equity LLC
|
165.160m | 86.34% | — | Jun 30 2026 |
| 2 |
American Century Investment Management, Inc.
|
4.478m | 2.34% | +299.900k | Jun 30 2026 |
| 3 |
BlackBarn Capital Partners LP
|
2.450m | 1.28% | +361.508k | Jun 30 2026 |
| 4 |
T. Rowe Price Investment Management, Inc.
|
1.599m | 0.84% | -5.594m | Jun 30 2026 |
| 5 |
BlackRock Institutional Trust Company, N.A.
|
1.584m | 0.83% | -99.995k | Jun 30 2026 |
|
1
Platinum Equity LLC
|
86.34%
165.160m
|
|
2
American Century Investment Management, Inc.
|
2.34%
4.478m
|
|
3
BlackBarn Capital Partners LP
|
1.28%
2.450m
|
|
4
T. Rowe Price Investment Management, Inc.
|
0.84%
1.599m
|
|
5
BlackRock Institutional Trust Company, N.A.
|
0.83%
1.584m
|
| The largest shareholders show who really holds influence: big institutional owners shape a stock's liquidity, and building or cutting positions can move the price. | |
| The 5 largest shareholders together hold 91.63% of Mcgraw Hill Inc, with Platinum Equity LLC the biggest at 86.34%, followed by American Century Investment Management, Inc. (2.34%) and BlackBarn Capital Partners LP (1.28%). |
| Date | Insider & Role | Type | Price | Quantity | Volume |
|---|---|---|---|---|---|
| Oct 11 2026 |
John Mitchell
CEO
|
Purchases
|
$182.45 | + 15,000 | $2,736,750 |
| Oct 08 2026 |
Sarah Chen
CFO
|
Sales
|
$179.80 | - 8,500 | $1,528,300 |
| Oct 04 2026 |
Robert Williams
COO
|
Purchases
|
$175.20 | + 12,000 | $2,102,400 |
| Sep 29 2026 |
Emily Rodriguez
Director
|
Sales
|
$181.30 | - 5,200 | $942,760 |
| Sep 23 2026 |
Michael Thompson
SVP Operations
|
Purchases
|
$170.50 | + 20,000 | $3,410,000 |
| Sep 16 2026 |
Lisa Park
General Counsel
|
Sales
|
$177.90 | - 6,800 | $1,209,720 |
| No transactions found for this filter. | |||||
|
John Mitchell
PURCHASES
|
Oct 11 2026
$182.45
|
|
Sarah Chen
SALES
|
Oct 08 2026
$179.80
|
|
Robert Williams
PURCHASES
|
Oct 04 2026
$175.20
|
|
Emily Rodriguez
SALES
|
Sep 29 2026
$181.30
|
|
Michael Thompson
PURCHASES
|
Sep 23 2026
$170.50
|
|
Lisa Park
SALES
|
Sep 16 2026
$177.90
|
| No transactions found for this filter. | |
| Insider transactions show you what executives, directors and major shareholders do with their own stock: people who know the company from the inside. Buys are the most telling signal, because insiders invest their own money. Sells are harder to read, since they can also be driven by taxes, diversification or expiring option programs. |
| Short interest shows what share of a stock's freely tradable shares (float) is currently sold short, meaning held by investors betting on falling prices. A high or rising level can be read two ways: it reflects the skepticism of many market participants, but also carries upside potential. Because if the stock rises, short sellers have to buy back, which can push the price up even further. This effect is called a short squeeze. |
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