Mark Kidd

CIK: 0001732058

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)16 (64.0%)

Position reduction

Option Exercises (M)4 (16.0%)

Derivative conversions

Awards (A)2 (8.0%)

Compensation grants

Other (G, F, J, C, D, …)3 (12.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

IRM

IRON MOUNTAIN INC

Officer

Discretionary Trading P&L

Holdings

Transaction History (25 total)

IRM
IRON MOUNTAIN INC
Sep 1, 2026
Sale(S)
Direct
6K shares at avg. $115.60$694K
IRM
IRON MOUNTAIN INC
Aug 7, 2026
Sale(S)
Direct
6K shares at avg. $122.70$736K
IRM
IRON MOUNTAIN INC
Jul 1, 2026
Sale(S)
Direct
6K shares at avg. $125.62$754K
IRM
IRON MOUNTAIN INC
Jun 1, 2026
Sale(S)
Direct
6K shares at avg. $126.70$760K
IRM
IRON MOUNTAIN INC
May 8, 2026
Sale(S)
Direct
6K shares at avg. $127.91$767K
IRM
IRON MOUNTAIN INC
Apr 1, 2026
Sale(S)
Direct
6K shares at avg. $102.71$616K
IRM
IRON MOUNTAIN INC
Mar 2, 2026
Sale(S)
Direct
6K shares at avg. $107.27$644K
IRM
IRON MOUNTAIN INC
Mar 1, 2026
Tax Payment(F)
Direct
61.3K shares at avg. $108.33$6.6M
IRM
IRON MOUNTAIN INC
Mar 1, 2026
Exercise(M)
Direct
149.8K shares-
IRM
IRON MOUNTAIN INC
Feb 20, 2026
Sale(S)
Direct
6K shares at avg. $108.17$649K
IRM
IRON MOUNTAIN INC
Feb 16, 2026
Award(A)
Performance Units
Direct
107K shares-
IRM
IRON MOUNTAIN INC
Jan 2, 2026
Sale(S)
Direct
6K shares at avg. $83.10$499K
IRM
IRON MOUNTAIN INC
Dec 1, 2025
Sale(S)
Direct
6K shares at avg. $85.00$510K
IRM
IRON MOUNTAIN INC
Nov 3, 2025
Sale(S)
Direct
6K shares at avg. $102.51$615K
IRM
IRON MOUNTAIN INC
Oct 31, 2025
Sale(S)
Direct
7.3K shares at avg. $100.82$737K
IRM
IRON MOUNTAIN INC
Oct 31, 2025
Exercise(M)
Direct
7.3K shares at avg. $31.46$230K
IRM
IRON MOUNTAIN INC
Oct 1, 2025
Sale(S)
Direct
6K shares at avg. $101.63$610K
IRM
IRON MOUNTAIN INC
Sep 2, 2025
Sale(S)
Direct
6K shares at avg. $91.05$546K
IRM
IRON MOUNTAIN INC
Aug 1, 2025
Sale(S)
Direct
6K shares at avg. $97.20$583K
IRM
IRON MOUNTAIN INC
Jul 1, 2025
Sale(S)
Direct
6K shares at avg. $102.02$612K
IRM
IRON MOUNTAIN INC
Mar 1, 2025
Exercise(M)
Direct
55K shares-
IRM
IRON MOUNTAIN INC
Mar 1, 2025
Tax Payment(F)
Direct
22.5K shares at avg. $93.17$2.1M
IRM
IRON MOUNTAIN INC
Mar 1, 2025
Exercise(M)
Direct
2.8K shares-
IRM
IRON MOUNTAIN INC
Mar 1, 2025
Tax Payment(F)
Direct
1.2K shares at avg. $93.17$107K
IRM
IRON MOUNTAIN INC
Feb 14, 2025
Award(A)
Performance Units
Direct
39.3K shares-

		Type	Shares	Price		Ownership
Sep 1, 2026	IRM IRON MOUNTAIN INC	Sale(S)	6,000	$115.60	$693,600	Direct
Aug 7, 2026	IRM IRON MOUNTAIN INC	Sale(S)	6,000	$122.70	$736,200	Direct
Jul 1, 2026	IRM IRON MOUNTAIN INC	Sale(S)	6,000	$125.62	$753,720	Direct
Jun 1, 2026	IRM IRON MOUNTAIN INC	Sale(S)	6,000	$126.70	$760,200	Direct
May 8, 2026	IRM IRON MOUNTAIN INC	Sale(S)	6,000	$127.91	$767,460	Direct
Apr 1, 2026	IRM IRON MOUNTAIN INC	Sale(S)	6,000	$102.71	$616,260	Direct
Mar 2, 2026	IRM IRON MOUNTAIN INC	Sale(S)	6,000	$107.27	$643,620	Direct
Mar 1, 2026	IRM IRON MOUNTAIN INC	Tax Payment(F)	61,342	$108.33	$6,645,179	Direct
Mar 1, 2026	IRM IRON MOUNTAIN INC	Exercise(M)	149,768	-	$0	Direct
Feb 20, 2026	IRM IRON MOUNTAIN INC	Sale(S)	6,000	$108.17	$649,020	Direct
Feb 16, 2026	IRM IRON MOUNTAIN INC	Award(A) Performance Units	106,977	-	-	Direct
Jan 2, 2026	IRM IRON MOUNTAIN INC	Sale(S)	6,000	$83.10	$498,600	Direct
Dec 1, 2025	IRM IRON MOUNTAIN INC	Sale(S)	6,000	$85.00	$510,000	Direct
Nov 3, 2025	IRM IRON MOUNTAIN INC	Sale(S)	6,000	$102.51	$615,060	Direct
Oct 31, 2025	IRM IRON MOUNTAIN INC	Sale(S)	7,306	$100.82	$736,591	Direct
Oct 31, 2025	IRM IRON MOUNTAIN INC	Exercise(M)	7,306	$31.46	$229,847	Direct
Oct 1, 2025	IRM IRON MOUNTAIN INC	Sale(S)	6,000	$101.63	$609,780	Direct
Sep 2, 2025	IRM IRON MOUNTAIN INC	Sale(S)	6,000	$91.05	$546,300	Direct
Aug 1, 2025	IRM IRON MOUNTAIN INC	Sale(S)	6,000	$97.20	$583,200	Direct
Jul 1, 2025	IRM IRON MOUNTAIN INC	Sale(S)	6,000	$102.02	$612,120	Direct
Mar 1, 2025	IRM IRON MOUNTAIN INC	Exercise(M)	54,960	-	-	Direct
Mar 1, 2025	IRM IRON MOUNTAIN INC	Tax Payment(F)	22,486	$93.17	$2,095,021	Direct
Mar 1, 2025	IRM IRON MOUNTAIN INC	Exercise(M)	2,819	-	-	Direct
Mar 1, 2025	IRM IRON MOUNTAIN INC	Tax Payment(F)	1,150	$93.17	$107,146	Direct
Feb 14, 2025	IRM IRON MOUNTAIN INC	Award(A) Performance Units	39,257	-	-	Direct

1-25 of 25 transactions

About Kidd Mark

Kidd Mark (SEC CIK 0001732058) files insider reports with the SEC as EVP, GM Data Centers & ALM of IRON MOUNTAIN INC (IRM).

Signal8 holds 19 ownership filings by Kidd Mark, all Form 4s, filed between Feb 18, 2025 and Sep 2, 2026. Those filings report 25 transactions, from Feb 14, 2025 to Sep 1, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Kidd Mark's filings is in PORTSMOUTH, NH.

Recent filings by Kidd Mark

Sep 1, 2026: Open-market sale of IRM shares (Form 4, code S).
Aug 7, 2026: Open-market sale of IRM shares (Form 4, code S).
Jul 1, 2026: Open-market sale of IRM shares (Form 4, code S).
Jun 1, 2026: Open-market sale of IRM shares (Form 4, code S).
May 8, 2026: Open-market sale of IRM shares (Form 4, code S).

Other insiders filing for IRON MOUNTAIN INC (IRM)

Samuels Theodore R. II, Director
Simons Doyle, Director
Meaney William L, President and CEO
McIntosh Greg W, EVP, Chief Commercial Officer
Borges Daniel, SVP & Chief Accounting Officer
RAKOWICH WALTER C, Director

How to read Form 4 transaction codes