Insider · SEC Form 4 filer

Mark Shapiro

Companies

Where they file as an insider

TKO Group (TKO) Officer, Director Latest filing Aug 18, 2026
Endeavor Group (EDR) Officer, Director Latest filing Mar 24, 2025
Equity Residential (EQR) Director Latest filing Feb 28, 2025

Track record

Did their buys beat the typical stock?

Open-market buys3
Quarters checked 6 months later1
Beat the typical stock —
Quarters too new to check1

Too soon to tell. 1 quarter has finished so far. We show a record once 3 have.

TKO Group (TKO) Bought May 13, 2026 · $2M · 10,807 shares Too new Too new. Its 6-month check uses prices as of Dec 31, 2026.
TKO Group (TKO) Bought Nov 14, 2023 · $1000K · 12,531 shares Beat typical Dec 31, 2023 $81.58 → Jun 30, 2024 $107.99 · +32.4% (typical stock −1.2%)

Each row is one stock in one quarter, however many buys it took. We take the stock's price at the end of that quarter and again 6 months later, and compare it with the typical stock over the same dates. Prices are quarter-end values from funds' 13F reports (the middle value across 3 or more funds), through Sep 30, 2026. Moves past 3 times up or down, mostly stock splits, are left out. How we tested this.

Past results. This is data, not advice.

Where this data comes from. Insider trades, fund holdings, activist stakes and company results come from public SEC EDGAR filings (Forms 4, 13F, 13D/13G, 10-Q and 8-K). Congress trades come from the STOCK Act reports members file with the House Clerk and the Senate. Daily closing prices come from post-no-preference/stocks on DoltHub, a community-run database shared under CC BY-SA 4.0; the prices we show stay under that license. They are each day's close, not live or official exchange prices.

This is data, not investment advice. About StockToast · Your watchlist