Sippican Capital Advisors

Position in IRM — Iron Mountain Inc

CIK 1557406 BOSTON, MA

Position in IRM

as of Mar 31, 2026 · filed Apr 23, 2026 Compact

Position Value

$2,321,335

+$390,508 QoQ

Shares Held

22,727

-2.4% QoQ

Ownership

0.008%

of shares outstanding

% of Portfolio

1.66%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Sep 2020

23 quarters on record

Voting authority Sole 100% Shared 0% None 0%

23 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$2,321,335	22,727	-2.4%	Shares	Sole	2026-04-23
2025-12-31	$1,930,827	23,277	-1.1%	Shares	Sole	2026-01-23
2025-09-30	$2,398,852	23,532	-0.8%	Shares	Sole	2025-10-27
2025-06-30	$2,432,139	23,712	0.0%	Shares	Sole	2025-07-25
2025-03-31	$2,040,180	23,712	-0.2%	Shares	Sole	2025-04-28
2024-12-31	$2,497,623	23,762	-4.3%	Shares	Sole	2025-01-23
2024-09-30	$2,949,004	24,817	-7.0%	Shares	Sole	2024-10-28
2024-06-30	$2,391,688	26,687	0.0%	Shares	Sole	2024-08-06
2024-03-31	$2,140,564	26,687	0.0%	Shares	Sole	2024-05-02
2023-12-31	$1,867,556	26,687	-0.3%	Shares	Sole	2024-01-30
2023-09-30	$1,591,892	26,777	-0.5%	Shares	Sole	2023-10-24
2023-06-30	$1,528,571	26,902	0.0%	Shares	Sole	2023-08-15
2023-03-31	$1,423,384	26,902	+0.1%	Shares	Sole	2023-07-14
2022-12-31	$1,339,818	26,877	-0.8%	Shares	Sole	2023-01-26
2022-09-30	$1,191,455	27,097	-1.3%	Shares	Sole	2022-10-17
2022-06-30	$1,336,150	27,442	-19.9%	Shares	Sole	2022-07-19
2022-03-31	$1,897,903	34,252	-0.5%	Shares	Sole	2022-04-20
2021-12-31	$1,801,826	34,432	-4.3%	Shares	Sole	2022-01-19
2021-09-30	$1,562,548	35,962	-1.5%	Shares	Sole	2021-10-20
2021-06-30	$1,545,611	36,522	-9.7%	Shares	Sole	2021-07-22
2021-03-31	$1,497,128	40,452	+15.6%	Shares	Sole	2021-04-15
2020-12-31	$1,031,711	34,997	+84.3%	Shares	Sole	2021-01-21
2020-09-30	$508,742	18,990	—	Shares	Sole	2020-10-23
No filing history on record for this holder in this stock.