IRON MTN INC NEW

Ticker: IRM CUSIP: 46284V101 Class: COM

National Pension Service's Holding History (CIK: 0001608046)

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

Q4 2025

Shares 509,020 Value ($000) $42,223 Avg Close $92.78 Range $77.77 - $107.03

Q3 2025

Shares 495,480 Value ($000) $50,509 Avg Close $94.72 Range $86.18 - $103.65

Q2 2025

Shares 476,161 Value ($000) $48,840 Avg Close $91.94 Range $70.45 - $103.63

Q1 2025

Shares 472,921 Value ($000) $40,690 Avg Close $93.15 Range $78.66 - $108.27

Q4 2024

Shares 402,813 Value ($000) $42,340 Avg Close $112.79 Range $97.81 - $124.90

Q3 2024

Shares 459,478 Value ($000) $54,600 Avg Close $102.07 Range $84.42 - $115.60

Q2 2024

Shares 398,291 Value ($000) $35,695 Avg Close $76.66 Range $69.57 - $86.17

Q1 2024

Shares 417,128 Value ($000) $33,458 Avg Close $68.03 Range $60.70 - $77.13

Q4 2023

Shares 413,929 Value ($000) $28,967 Avg Close $58.41 Range $52.52 - $66.31

Q3 2023

Shares 413,929 Value ($000) $24,786 Avg Close $56.32 Range $51.77 - $59.93

Q2 2023

Shares 428,189 Value ($000) $24,047 Avg Close $49.91 Range $46.48 - $52.92

Q1 2023

Shares 467,324 Value ($000) $24,203 Avg Close $47.24 Range $43.98 - $51.44

Q4 2022

Shares 511,839 Value ($000) $25,515 Avg Close $44.98 Range $39.02 - $50.36

Q3 2022

Shares 501,601 Value ($000) $21,975 Avg Close $44.49 Range $38.52 - $49.96

Q2 2022

Shares 530,646 Value ($000) $25,837 Avg Close $45.77 Range $40.30 - $50.86

Q1 2022

Shares 518,482 Value ($000) $28,729 Avg Close $40.95 Range $35.72 - $49.04

Q4 2021

Shares 83,245 Value ($000) $4,356 Avg Close $40.12 Range $35.72 - $45.55

Q3 2021

Shares 83,245 Value ($000) $3,617 Avg Close $37.70 Range $35.07 - $41.42

Q1 2020

Shares 2,742 Value ($000) $65 Avg Close $22.56 Range $15.97 - $25.60

Q4 2019

Shares 2,742 Value ($000) $87 Avg Close $23.96 Range $23.03 - $25.08

Q3 2019

Shares 2,747 Value ($000) $89 Avg Close $22.54 Range $20.94 - $24.55

Q2 2019

Shares 2,747 Value ($000) $86 Avg Close $23.07 Range $21.36 - $25.71

Q4 2017

Shares 1,609 Value ($000) $61 Avg Close $25.21 Range $23.77 - $26.32

Q3 2017

Shares 1,609 Value ($000) $62 Avg Close $23.41 Range $20.57 - $25.75

Q2 2017

Shares 1,296 Value ($000) $44 Avg Close $21.58 Range $20.00 - $22.57

Q1 2017

Shares 490 Value ($000) $17 Avg Close $21.50 Range $19.52 - $22.84

Q4 2016

Shares 490 Value ($000) $16 Avg Close $19.85 Range $18.30 - $22.33

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	509,020	$42,223	$92.78	$77.77 - $107.03
Q3 2025	495,480	$50,509	$94.72	$86.18 - $103.65
Q2 2025	476,161	$48,840	$91.94	$70.45 - $103.63
Q1 2025	472,921	$40,690	$93.15	$78.66 - $108.27
Q4 2024	402,813	$42,340	$112.79	$97.81 - $124.90
Q3 2024	459,478	$54,600	$102.07	$84.42 - $115.60
Q2 2024	398,291	$35,695	$76.66	$69.57 - $86.17
Q1 2024	417,128	$33,458	$68.03	$60.70 - $77.13
Q4 2023	413,929	$28,967	$58.41	$52.52 - $66.31
Q3 2023	413,929	$24,786	$56.32	$51.77 - $59.93
Q2 2023	428,189	$24,047	$49.91	$46.48 - $52.92
Q1 2023	467,324	$24,203	$47.24	$43.98 - $51.44
Q4 2022	511,839	$25,515	$44.98	$39.02 - $50.36
Q3 2022	501,601	$21,975	$44.49	$38.52 - $49.96
Q2 2022	530,646	$25,837	$45.77	$40.30 - $50.86
Q1 2022	518,482	$28,729	$40.95	$35.72 - $49.04
Q4 2021	83,245	$4,356	$40.12	$35.72 - $45.55
Q3 2021	83,245	$3,617	$37.70	$35.07 - $41.42
Q1 2020	2,742	$65	$22.56	$15.97 - $25.60
Q4 2019	2,742	$87	$23.96	$23.03 - $25.08
Q3 2019	2,747	$89	$22.54	$20.94 - $24.55
Q2 2019	2,747	$86	$23.07	$21.36 - $25.71
Q4 2017	1,609	$61	$25.21	$23.77 - $26.32
Q3 2017	1,609	$62	$23.41	$20.57 - $25.75
Q2 2017	1,296	$44	$21.58	$20.00 - $22.57
Q1 2017	490	$17	$21.50	$19.52 - $22.84
Q4 2016	490	$16	$19.85	$18.30 - $22.33