David A. Siegel Iron Mountain Inc Transaction History

Two Sigma Advisers, LP

$47 Billion
Q3 2025

A detailed history of David A. Siegel (Two Sigma Advisers, LP) transactions in Iron Mountain Inc stock. As of the latest transaction made, Two Sigma Advisers, LP holds 6,500 shares of IRM stock, worth $593,905. This represents 0.0% of its overall portfolio holdings.

Number of Shares

6,500

Previous 36,100 81.99%

Holding current value

$593,905

Previous $3.7 Million 82.12%

% of portfolio

0.0%

Previous 0.01%

22 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 14, 2025	SELL	$89.46 - $104.46 $2.65 Million - $3.09 Million	-29,600 Reduced 81.99%	6,500 $662,000
Q2 2025 Aug 14, 2025	SELL	$76.93 - $105.25 $2.05 Million - $2.8 Million	-26,600 Reduced 42.42%	36,100 $3.7 Million
Q1 2025 May 15, 2025	BUY	$82.79 - $111.31 $4.55 Million - $6.12 Million	55,000 Added 714.29%	62,700 $5.39 Million
Q4 2024 Feb 14, 2025	BUY	$101.62 - $128.14 $782,474 - $986,677	7,700 New	7,700 $809,000
Q4 2021 Feb 14, 2022	SELL	$42.63 - $52.77 $1.54 Million - $1.9 Million	-36,100 Closed	0 $0

Q3 2021 Nov 15, 2021	SELL	$42.42 - $49.45 $797,496 - $929,660	-18,800 Reduced 34.24%	36,100 $1.57 Million
Q2 2021 Aug 16, 2021	SELL	$37.3 - $47.02 $1.06 Million - $1.33 Million	-28,300 Reduced 34.01%	54,900 $2.32 Million
Q1 2021 May 17, 2021	SELL	$28.0 - $37.28 $260,400 - $346,704	-9,300 Reduced 10.05%	83,200 $3.08 Million
Q4 2020 Feb 16, 2021	SELL	$25.49 - $30.38 $7.94 Million - $9.46 Million	-311,300 Reduced 77.09%	92,500 $2.73 Million
Q3 2020 Nov 16, 2020	BUY	$26.04 - $30.5 $1.52 Million - $1.78 Million	58,500 Added 16.94%	403,800 $10.8 Million
Q2 2020 Aug 14, 2020	SELL	$21.52 - $30.56 $4.1 Million - $5.83 Million	-190,724 Reduced 35.58%	345,300 $9.01 Million
Q1 2020 May 15, 2020	BUY	$22.4 - $34.45 $3.17 Million - $4.87 Million	141,324 Added 35.81%	536,024 $12.8 Million
Q4 2019 Feb 14, 2020	SELL	$31.39 - $34.37 $1.3 Million - $1.42 Million	-41,300 Reduced 9.47%	394,700 $12.6 Million
Q3 2019 Nov 14, 2019	SELL	$29.41 - $34.14 $1.36 Million - $1.57 Million	-46,100 Reduced 9.56%	436,000 $14.1 Million
Q2 2019 Aug 14, 2019	SELL	$30.46 - $36.57 $1.85 Million - $2.22 Million	-60,600 Reduced 11.17%	482,100 $15.1 Million
Q1 2019 May 15, 2019	BUY	$32.1 - $37.2 $13.5 Million - $15.6 Million	420,300 Added 343.38%	542,700 $19.2 Million
Q4 2018 Feb 14, 2019	BUY	$30.48 - $35.02 $3.01 Million - $3.45 Million	98,653 Added 415.43%	122,400 $3.97 Million
Q3 2018 Nov 14, 2018	BUY	$34.09 - $36.74 $809,535 - $872,464	23,747 New	23,747 $820,000
Q2 2018 Aug 14, 2018	SELL	$32.05 - $35.01 $4.62 Million - $5.05 Million	-144,147 Closed	0 $0
Q1 2018 May 15, 2018	BUY	$30.89 - $37.61 $244,031 - $297,119	7,900 Added 5.8%	144,147 $4.74 Million
Q4 2017 Feb 14, 2018	BUY	$37.15 - $41.44 $423,510 - $472,416	11,400 Added 9.13%	136,247 $5.14 Million
Q3 2017 Nov 14, 2017	BUY	$36.43 - $40.38 $4.55 Million - $5.04 Million	124,847	124,847 $4.86 Million

Others Institutions Holding IRM

# of Institutions

1,157

Shares Held

245M

Call Options Held

1.41M

Put Options Held

984K

View Full List

About IRON MOUNTAIN INC

Ticker IRM
Exchange NYSE
Sector Real Estate
Industry REIT—Specialty
Shares Outstandng 290,684,992
Market Cap $26.6B
Description
Iron Mountain Incorporated (NYSE: IRM), founded in 1951, is the global leader for storage and information management services. Trusted by more than 225,000 organizations around the world, and with a real estate network of more than 90 million square feet across approximately 1,450 facilities in approximately 50 countries, Iron Mountain stores an...

More about IRM

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