Market Briefing / Insider Buying / October 23, 2026 Insider Buying — October 23, 2026 Insider Buying — US Stocks (as of 2026-10-23)
Source: SEC EDGAR Form 4 filings. Open-market purchases by executives and directors. Grouped by filing date; trade date shown with days-to-file lag. Sorted by transaction value.
Filed 2026-10-22
Ticker Company Sector Insider Title Trade Date Shares Price Value % From 52wk Low AMT AMERICAN TOWER CORP /MA/ Real Estate Clarke Teresa Hillary maybe director 2026-07-13 (+101d) 46 $167.52 $7,706 +14.7% AMT AMERICAN TOWER CORP /MA/ Real Estate Clarke Teresa Hillary maybe director 2026-10-20 (+2d) 42 $183.20 $7,694 +14.7% AMT AMERICAN TOWER CORP /MA/ Real Estate Clarke Teresa Hillary maybe director 2026-04-28 (+177d) 43 $177.08 $7,614 +14.7% AMT AMERICAN TOWER CORP /MA/ Real Estate Clarke Teresa Hillary maybe director 2025-07-11 (+468d) 24 $223.23 $5,358 +14.7% AMT AMERICAN TOWER CORP /MA/ Real Estate Clarke Teresa Hillary maybe director 2026-02-02 (+262d) 30 $178.04 $5,341 +14.7% AMT AMERICAN TOWER CORP /MA/ Real Estate Clarke Teresa Hillary maybe director 2025-10-20 (+367d) 28 $189.12 $5,295 +14.7% AMT AMERICAN TOWER CORP /MA/ Real Estate Clarke Teresa Hillary maybe director 2025-04-28 (+542d) 25 $209.33 $5,233 +14.7% AMT AMERICAN TOWER CORP /MA/ Real Estate Clarke Teresa Hillary maybe director 2024-10-25 (+727d) 14 $227.42 $3,184 +14.7% AMT AMERICAN TOWER CORP /MA/ Real Estate Clarke Teresa Hillary maybe director 2025-02-03 (+626d) 17 $187.27 $3,184 +14.7% AMT AMERICAN TOWER CORP /MA/ Real Estate Clarke Teresa Hillary maybe director 2024-04-26 (+909d) 18 $172.82 $3,111 +14.7% AMT AMERICAN TOWER CORP /MA/ Real Estate Clarke Teresa Hillary maybe director 2024-07-12 (+832d) 15 $204.28 $3,064 +14.7% AMT AMERICAN TOWER CORP /MA/ Real Estate Clarke Teresa Hillary maybe director 2024-02-01 (+994d) 7 $199.95 $1,400 +14.7% AMT AMERICAN TOWER CORP /MA/ Real Estate Clarke Teresa Hillary maybe director 2023-10-27 (+1091d) 8 $171.52 $1,372 +14.7% AMT AMERICAN TOWER CORP /MA/ Real Estate Clarke Teresa Hillary maybe director 2023-07-10 (+1200d) 7 $193.78 $1,356 +14.7% AMT AMERICAN TOWER CORP /MA/ Real Estate Clarke Teresa Hillary maybe director 2023-04-28 (+1273d) 6 $205.93 $1,236 +14.7%
Filed 2026-10-21
Ticker Company Sector Insider Title Trade Date Shares Price Value % From 52wk Low NBIS Nebius Group N.V. Information Technology Grimme Arne maybe director 2026-10-20 (+1d) 151 $164.62 $24,858 +116.5% NBIS Nebius Group N.V. Information Technology Grimme Arne maybe director 2026-10-21 (+0d) 148 $167.94 $24,855 +116.5%
Filed 2026-10-20
Ticker Company Sector Insider Title Trade Date Shares Price Value % From 52wk Low NBIS Nebius Group N.V. Information Technology Grimme Arne maybe director 2026-10-19 (+1d) 148 $169.99 $25,159 +116.5% AYI ACUITY INC. (DE) Consumer Discretionary O'Shaughnessy Laura maybe director 2026-10-16 (+4d) 73 $302.32 $22,069 +23.7%
Filed 2026-10-19
Ticker Company Sector Insider Title Trade Date Shares Price Value % From 52wk Low APLD Applied Digital Corp. Information Technology Zhang Jason Gechen President 2026-10-16 (+3d) 300,000 $18.86 $5,658,000 +8.2% APLD Applied Digital Corp. Information Technology Cummins Wes CEO; Chairman 2026-10-16 (+3d) 55,803 $18.04 $1,006,686 +8.2% EME EMCOR Group, Inc. Industrials MCEVOY M KEVIN maybe director 2026-09-01 (+48d) 2 $736.79 $1,474 +17.2% EME EMCOR Group, Inc. Industrials MCEVOY M KEVIN maybe director 2026-06-17 (+124d) 1 $826.31 $826 +17.2%
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