Form4insider filings, from the source

Company · CIK 0001020569 · SIC 6798 — Real Estate Investment Trusts · NYSE

IRON MOUNTAIN INC · IRM

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $18.1M · 8net −$18.1M
$10k$10k$100k$100k$1M$1M$10M$10MbuyssalesJun 28Jul 13Jul 28Aug 13Aug 28Sep 13Sep 28

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 1, 2026 SForm 4 →Sep 2, 4:27 pm EDTWilliam L MeaneyPresident and CEO, Director38,474$114.08$4,389,0160−100%10b5-1
Sep 1, 2026 MForm 4 →Sep 2, 4:27 pm EDTWilliam L MeaneyPresident and CEO, Director38,474$37.00$1,423,53838,474—10b5-1
Sep 1, 2026 SForm 4 →Sep 2, 4:22 pm EDTGreg W McIntoshEVP, Chief Commercial Officer5,000$115.60$578,00075,634−6.20%10b5-1
Sep 1, 2026 SForm 4 →Sep 2, 4:20 pm EDTMark KiddEVP, GM Data Centers & ALM6,000$115.60$693,60095,507−5.91%10b5-1
Aug 7, 2026 SForm 4 →Aug 10, 4:12 pm EDTWilliam L MeaneyPresident and CEO, Director38,474$121.67$4,680,9540−100%10b5-1
Aug 7, 2026 MForm 4 →Aug 10, 4:12 pm EDTWilliam L MeaneyPresident and CEO, Director38,474$37.00$1,423,53838,474—10b5-1
Aug 7, 2026 SForm 4 →Aug 10, 4:08 pm EDTMark KiddEVP, GM Data Centers & ALM6,000$122.70$736,200101,507−5.58%10b5-1
Aug 6, 2026 MForm 4 →Aug 10, 4:03 pm EDTGreg W McIntoshEVP, Chief Commercial Officer6,839$37.00$253,04387,473—10b5-1
Aug 6, 2026 SForm 4 →Aug 10, 4:03 pm EDTGreg W McIntoshEVP, Chief Commercial Officer11,839$127.13$1,505,09280,634−12.8%10b5-1
Jul 1, 2026 SForm 4 →Jul 2, 4:39 pm EDTWilliam L MeaneyPresident and CEO, Director38,474$122.83$4,725,8290−100%10b5-1
Jul 1, 2026 MForm 4 →Jul 2, 4:39 pm EDTWilliam L MeaneyPresident and CEO, Director38,474$37.00$1,423,53838,474—10b5-1
Jul 1, 2026 SForm 4 →Jul 2, 4:30 pm EDTMark KiddEVP, GM Data Centers & ALM6,000$125.62$753,720107,507−5.29%10b5-1

Reported at this company — derivatives (options, RSUs, warrants)

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 1, 2026 MForm 4 →Sep 2, 4:27 pm EDTWilliam L MeaneyPresident and CEO, Director38,474——115,422—10b5-1
Aug 7, 2026 MForm 4 →Aug 10, 4:12 pm EDTWilliam L MeaneyPresident and CEO, Director38,474——153,896—10b5-1
Aug 6, 2026 MForm 4 →Aug 10, 4:03 pm EDTGreg W McIntoshEVP, Chief Commercial Officer6,839——0—10b5-1
Jul 6, 2026 AForm 4 →Jul 7, 4:39 pm EDTDoyle SimonsDirector339$116.79$39,63446,213—
Jul 6, 2026 AForm 4 →Jul 7, 4:31 pm EDTTheodore R. Samuels IIDirector99$116.79$11,56913,800—
Jul 2, 2026 AForm 4 →Jul 6, 4:34 pm EDTTheodore R. Samuels IIDirector311$116.61$36,24913,701—
Jul 1, 2026 MForm 4 →Jul 2, 4:39 pm EDTWilliam L MeaneyPresident and CEO, Director38,474——192,370—10b5-1