IRON MTN INC NEW

Ticker: IRM CUSIP: 46284V101 Class: COM

HORIZON KINETICS ASSET MANAGEMENT LLC's Holding History (CIK: 0001056823)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 18,405 Value ($000) $1,527 Avg Close $92.78 Range $77.77 - $107.03

Q3 2025

Shares 19,455 Value ($000) $1,983 Avg Close $94.72 Range $86.18 - $103.65

Q2 2025

Shares 32,455 Value ($000) $3,329 Avg Close $91.94 Range $70.45 - $103.63

Q1 2025

Shares 32,455 Value ($000) $2,792 Avg Close $93.15 Range $78.66 - $108.27

Q4 2024

Shares 32,900 Value ($000) $3,458 Avg Close $112.79 Range $97.81 - $124.90

Q3 2024

Shares 34,450 Value ($000) $4,094 Avg Close $102.07 Range $84.42 - $115.60

Q2 2024

Shares 24,100 Value ($000) $2,160 Avg Close $76.66 Range $69.57 - $86.17

Q1 2024

Shares 24,500 Value ($000) $1,965 Avg Close $68.03 Range $60.70 - $77.13

Q4 2023

Shares 26,450 Value ($000) $1,851 Avg Close $58.41 Range $52.52 - $66.31

Q3 2023

Shares 27,358 Value ($000) $1,626 Avg Close $56.32 Range $51.77 - $59.93

Q2 2023

Shares 27,358 Value ($000) $1,554 Avg Close $49.91 Range $46.48 - $52.92

Q1 2023

Shares 27,358 Value ($000) $1,448 Avg Close $47.24 Range $43.98 - $51.44

Q4 2022

Shares 27,508 Value ($000) $1,371 Avg Close $44.98 Range $39.02 - $50.36

Q3 2022

Shares 27,508 Value ($000) $1,210 Avg Close $44.49 Range $38.52 - $49.96

Q2 2022

Shares 27,558 Value ($000) $1,342 Avg Close $45.77 Range $40.30 - $50.86

Q1 2022

Shares 27,658 Value ($000) $1,533 Avg Close $40.95 Range $35.72 - $49.04

Q4 2021

Shares 25,208 Value ($000) $1,319 Avg Close $40.12 Range $35.72 - $45.55

Q3 2021

Shares 24,858 Value ($000) $1,080 Avg Close $37.70 Range $35.07 - $41.42

Q2 2021

Shares 26,658 Value ($000) $1,128 Avg Close $34.67 Range $30.15 - $39.02

Q1 2021

Shares 26,658 Value ($000) $987 Avg Close $27.21 Range $22.46 - $33.48

Q4 2020

Shares 24,808 Value ($000) $731 Avg Close $22.13 Range $19.73 - $24.37

Q3 2020

Shares 20,488 Value ($000) $549 Avg Close $22.21 Range $19.89 - $23.94

Q2 2020

Shares 16,358 Value ($000) $427 Avg Close $19.29 Range $15.96 - $23.32

Q1 2020

Shares 18,758 Value ($000) $446 Avg Close $22.56 Range $15.97 - $25.60

Q4 2019

Shares 9,058 Value ($000) $289 Avg Close $23.96 Range $23.03 - $25.08

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	18,405	$1,527	$92.78	$77.77 - $107.03
Q3 2025	19,455	$1,983	$94.72	$86.18 - $103.65
Q2 2025	32,455	$3,329	$91.94	$70.45 - $103.63
Q1 2025	32,455	$2,792	$93.15	$78.66 - $108.27
Q4 2024	32,900	$3,458	$112.79	$97.81 - $124.90
Q3 2024	34,450	$4,094	$102.07	$84.42 - $115.60
Q2 2024	24,100	$2,160	$76.66	$69.57 - $86.17
Q1 2024	24,500	$1,965	$68.03	$60.70 - $77.13
Q4 2023	26,450	$1,851	$58.41	$52.52 - $66.31
Q3 2023	27,358	$1,626	$56.32	$51.77 - $59.93
Q2 2023	27,358	$1,554	$49.91	$46.48 - $52.92
Q1 2023	27,358	$1,448	$47.24	$43.98 - $51.44
Q4 2022	27,508	$1,371	$44.98	$39.02 - $50.36
Q3 2022	27,508	$1,210	$44.49	$38.52 - $49.96
Q2 2022	27,558	$1,342	$45.77	$40.30 - $50.86
Q1 2022	27,658	$1,533	$40.95	$35.72 - $49.04
Q4 2021	25,208	$1,319	$40.12	$35.72 - $45.55
Q3 2021	24,858	$1,080	$37.70	$35.07 - $41.42
Q2 2021	26,658	$1,128	$34.67	$30.15 - $39.02
Q1 2021	26,658	$987	$27.21	$22.46 - $33.48
Q4 2020	24,808	$731	$22.13	$19.73 - $24.37
Q3 2020	20,488	$549	$22.21	$19.89 - $23.94
Q2 2020	16,358	$427	$19.29	$15.96 - $23.32
Q1 2020	18,758	$446	$22.56	$15.97 - $25.60
Q4 2019	9,058	$289	$23.96	$23.03 - $25.08