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Iron Mountain Incorporated 2025-2026 Proxy Voting Records

Compiled from SEC Form N-PX filings and Iron Mountain Incorporated’s Form 8-K, filed May 12, 2026 (Item 5.07 on EDGAR). Page generated October 18, 2026.

13Ballot items
854Asset managers
10,308Fund votes
May 7, 2026Meeting date

Results at a glance

Meeting of May 7, 2026: 13 items on Iron Mountain Incorporated’s Form 8-K, filed May 12, 2026: 2 approved · 11 without a stated outcome.

Material dissent

None.

Material dissent: a director nominee under 80% of the votes cast, say-on-pay under 70%, any other item the board put forward under 80%, or a shareholder proposal with more than 50%, on the company’s own Form 8-K tally. How this is decided

Proxy season: 2023-2024 2024-2025 2025-2026

Explore Iron Mountain Incorporated in the interactive database Compare manager voting policies

Official 2025-2026 meeting results reported by Iron Mountain Incorporated

These tallies are Iron Mountain Incorporated’s own, as disclosed to the U.S. Securities and Exchange Commission on Form 8-K, filed May 12, 2026 (Item 5.07, “Submission of Matters to a Vote of Security Holders”). They cover every share voted at the meeting, not just the funds that file Form N-PX.

Iron Mountain Incorporated — official shareholder meeting results, meeting held May 7, 2026
Ballot item	For	Against	Abstain	Withheld	Broker non-votes	Support (of votes cast)	Reported outcome	Voting standard
Elect Director: Jennifer Allerton	228,147,317	3,714,104	258,469	--	29,485,212	98%	Not verified	—
Elect Director: Pamela M. Arway	224,276,516	7,584,348	259,026	--	29,485,212	97%	Not verified	—
Elect Director: Kent P. Dauten	222,084,314	9,771,888	263,688	--	29,485,212	96%	Not verified	—
Elect Director: June Yee Felix	231,457,579	403,644	258,667	--	29,485,212	99.8%	Not verified	—
Elect Director: Monte Ford	229,673,232	2,176,206	270,452	--	29,485,212	99.0%	Not verified	—
Elect Director: Christie Kelly	230,740,183	1,119,691	260,016	--	29,485,212	99.5%	Not verified	—
Elect Director: Robin L. Matlock	228,348,027	3,510,121	261,742	--	29,485,212	98%	Not verified	—
Elect Director: William L. Meaney	230,355,967	1,518,355	245,568	--	29,485,212	99.3%	Not verified	—
Elect Director: Walter C. Rakowich	221,243,149	10,628,182	248,559	--	29,485,212	95%	Not verified	—
Elect Director: Theodore R. Samuels	223,196,685	8,663,281	259,924	--	29,485,212	96%	Not verified	—
Elect Director: Doyle R. Simons	230,922,536	935,130	262,224	--	29,485,212	99.5%	Not verified	—
At the Annual Meeting, the Company's stockholders approved a non-binding advisory resolution on the compensation paid to the Company's named executive officers as disclosed pursuant to Item 402 of Regulation S-K in the Proxy Statement . This proposal received	223,486,130	7,742,108	891,652	--	29,485,212	97%	Approved	—
At the Annual Meeting, the Company's stockholders ratified the appointment of Deloitte & Touche LLP as the Company's independent registered public accounting firm for the fiscal year ending December 31, 2026. This proposal received the following votes:	249,250,207	11,947,700	407,195	--	--	95%	Approved	—

Source: Iron Mountain Incorporated, Form 8-K, filed with the SEC on May 12, 2026 — read the filing on EDGAR.

How asset managers voted at the Iron Mountain Incorporated 2025-2026 meeting

Each item below shows how the 854 asset managers that disclosed a Iron Mountain Incorporated vote in their SEC Form N-PX filings actually voted. Share totals are the shares those managers' funds voted, summed across every fund they report.

1. Elect Director: Christie Kelly

Outcome not verifiedDIRECTOR ELECTIONSReported outcome: Not verified

Combines 9 wordings of this item as funds reported it.

99.5% Majority: yes · of votes cast

FOR 99.5%

FOR: 230,740,183AGAINST: 1,119,691

Details: description as filed, official tally, votes by 150 asset managers

Description as filed by funds: For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year term or until their successors are elected and qualified: Christie Kelly

Iron Mountain Incorporated’s own tally for this item (“Elect Director: Christie Kelly”): 230,740,183 for, 1,119,691 against, per its Form 8-K filed May 12, 2026 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item.

Reported outcome: not verified — the filing’s own statement of the outcome could not be identified for this item.
Support: 99.5% of votes cast — FOR ÷ (FOR + AGAINST); abstentions and broker non-votes are excluded.

The 150 asset managers below reported 106,766,155 for, 1,656 against, 272,347 abstained, 224 not voted, 1,315 unknown.

FOR

FOR: 106,766,155AGAINST: 1,656ABSTAIN: 272,347UNKNOWN: 1,315NOT VOTED: 224

Largest asset managers voting on “For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year ” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	43,657,910	11	4	For
Fidelity	12,275,834	0	0	For
BlackRock	12,103,751	0	0	For
Cohen & Steers	10,035,224	0	0	For
State Street	4,372,299	0	0	For
Charles Schwab	3,881,258	0	0	For
Invesco	2,691,120	0	0	For
Principal	1,898,920	0	0	For
Capital Group	1,867,169	0	0	For
TIAA	1,533,574	0	0	For
Prudential/PGIM	983,700	0	0	For
DWS	781,504	0	0	For
BARON SELECT FUNDS	544,950	0	0	For
Dimensional	443,875	0	0	For
American Century	439,142	0	0	For
MASTER INVESTMENT PORTFOLIO	410,680	0	0	For
JPMorgan	401,015	0	0	For
Russell Investments	384,109	0	0	For
John Hancock	322,323	0	0	For
New York Life	319,888	0	0	For
Lincoln Financial	312,720	0	0	For
Brighthouse	281,511	0	6,804	For
T. Rowe Price	286,312	0	0	For
Virtus	276,120	0	0	For
Apollo Diversified Real Estate Fund	0	0	265,539	Abstain

Showing the 25 largest of 150 asset managers. See all 150 in the interactive database.

2. Elect Director: Doyle R. Simons

Outcome not verifiedDIRECTOR ELECTIONSReported outcome: Not verified

Combines 9 wordings of this item as funds reported it.

99.5% Majority: yes · of votes cast

FOR 99.5%

FOR: 230,922,536AGAINST: 935,130

Details: description as filed, official tally, votes by 150 asset managers

Iron Mountain Incorporated’s own tally for this item (“Elect Director: Doyle R. Simons”): 230,922,536 for, 935,130 against, per its Form 8-K filed May 12, 2026 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item.

The 150 asset managers below reported 106,748,290 for, 19,523 against, 272,347 abstained, 224 not voted, 1,315 unknown.

FOR

FOR: 106,748,290AGAINST: 19,523ABSTAIN: 272,347UNKNOWN: 1,315NOT VOTED: 224

Largest asset managers voting on “For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year ” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	43,657,915	8	4	For
Fidelity	12,275,834	0	0	For
BlackRock	12,103,751	0	0	For
Cohen & Steers	10,035,224	0	0	For
State Street	4,372,299	0	0	For
Charles Schwab	3,881,258	0	0	For
Invesco	2,691,120	0	0	For
Principal	1,898,920	0	0	For
Capital Group	1,867,169	0	0	For
TIAA	1,533,574	0	0	For
Prudential/PGIM	983,700	0	0	For
DWS	781,504	0	0	For
BARON SELECT FUNDS	544,950	0	0	For
Dimensional	443,875	0	0	For
American Century	439,142	0	0	For
MASTER INVESTMENT PORTFOLIO	410,680	0	0	For
JPMorgan	401,015	0	0	For
Russell Investments	384,109	0	0	For
John Hancock	322,323	0	0	For
New York Life	319,888	0	0	For
Lincoln Financial	312,720	0	0	For
Brighthouse	281,511	0	6,804	For
T. Rowe Price	286,312	0	0	For
Virtus	276,120	0	0	For
Apollo Diversified Real Estate Fund	0	0	265,539	Abstain

Showing the 25 largest of 150 asset managers. See all 150 in the interactive database.

3. Elect Director: Jennifer Allerton

Outcome not verifiedDIRECTOR ELECTIONSReported outcome: Not verified

Combines 9 wordings of this item as funds reported it.

98% Majority: yes · of votes cast

FOR 98%

FOR: 228,147,317AGAINST: 3,714,104

Details: description as filed, official tally, votes by 150 asset managers

Iron Mountain Incorporated’s own tally for this item (“Elect Director: Jennifer Allerton”): 228,147,317 for, 3,714,104 against, per its Form 8-K filed May 12, 2026 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item.

Reported outcome: not verified — the filing’s own statement of the outcome could not be identified for this item.
Support: 98% of votes cast — FOR ÷ (FOR + AGAINST); abstentions and broker non-votes are excluded.

The 150 asset managers below reported 106,731,462 for, 36,351 against, 272,347 abstained, 224 not voted, 1,315 unknown.

FOR

FOR: 106,731,462AGAINST: 36,351ABSTAIN: 272,347UNKNOWN: 1,315NOT VOTED: 224

Largest asset managers voting on “For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year ” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	43,657,883	40	4	For
Fidelity	12,275,834	0	0	For
BlackRock	12,103,751	0	0	For
Cohen & Steers	10,035,224	0	0	For
State Street	4,372,119	180	0	For
Charles Schwab	3,881,258	0	0	For
Invesco	2,691,120	0	0	For
Principal	1,898,920	0	0	For
Capital Group	1,867,169	0	0	For
TIAA	1,533,574	0	0	For
Prudential/PGIM	983,700	0	0	For
DWS	781,504	0	0	For
BARON SELECT FUNDS	544,950	0	0	For
Dimensional	443,875	0	0	For
American Century	439,142	0	0	For
MASTER INVESTMENT PORTFOLIO	410,680	0	0	For
JPMorgan	401,015	0	0	For
Russell Investments	384,109	0	0	For
John Hancock	322,323	0	0	For
New York Life	319,888	0	0	For
Lincoln Financial	312,720	0	0	For
Brighthouse	281,511	0	6,804	For
T. Rowe Price	286,312	0	0	For
Virtus	276,120	0	0	For
Apollo Diversified Real Estate Fund	0	0	265,539	Abstain

Showing the 25 largest of 150 asset managers. See all 150 in the interactive database.

4. Elect Director: June Yee Felix

Outcome not verifiedDIRECTOR ELECTIONSReported outcome: Not verified

Combines 9 wordings of this item as funds reported it.

99.8% Majority: yes · of votes cast

FOR 99.8%

FOR: 231,457,579AGAINST: 403,644

Details: description as filed, official tally, votes by 150 asset managers

Iron Mountain Incorporated’s own tally for this item (“Elect Director: June Yee Felix”): 231,457,579 for, 403,644 against, per its Form 8-K filed May 12, 2026 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item.

Reported outcome: not verified — the filing’s own statement of the outcome could not be identified for this item.
Support: 99.8% of votes cast — FOR ÷ (FOR + AGAINST); abstentions and broker non-votes are excluded.

The 150 asset managers below reported 106,767,808 for, 5 against, 272,347 abstained, 224 not voted, 1,315 unknown.

FOR

FOR: 106,767,808AGAINST: 5ABSTAIN: 272,347UNKNOWN: 1,315NOT VOTED: 224

Largest asset managers voting on “For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year ” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	43,657,918	5	4	For
Fidelity	12,275,834	0	0	For
BlackRock	12,103,751	0	0	For
Cohen & Steers	10,035,224	0	0	For
State Street	4,372,299	0	0	For
Charles Schwab	3,881,258	0	0	For
Invesco	2,691,120	0	0	For
Principal	1,898,920	0	0	For
Capital Group	1,867,169	0	0	For
TIAA	1,533,574	0	0	For
Prudential/PGIM	983,700	0	0	For
DWS	781,504	0	0	For
BARON SELECT FUNDS	544,950	0	0	For
Dimensional	443,875	0	0	For
American Century	439,142	0	0	For
MASTER INVESTMENT PORTFOLIO	410,680	0	0	For
JPMorgan	401,015	0	0	For
Russell Investments	384,109	0	0	For
John Hancock	322,323	0	0	For
New York Life	319,888	0	0	For
Lincoln Financial	312,720	0	0	For
Brighthouse	281,511	0	6,804	For
T. Rowe Price	286,312	0	0	For
Virtus	276,120	0	0	For
Apollo Diversified Real Estate Fund	0	0	265,539	Abstain

Showing the 25 largest of 150 asset managers. See all 150 in the interactive database.

5. Elect Director: Kent P. Dauten

Outcome not verifiedDIRECTOR ELECTIONSReported outcome: Not verified

Combines 9 wordings of this item as funds reported it.

96% Majority: yes · of votes cast

FOR 96%

FOR: 222,084,314AGAINST: 9,771,888

Details: description as filed, official tally, votes by 150 asset managers

Iron Mountain Incorporated’s own tally for this item (“Elect Director: Kent P. Dauten”): 222,084,314 for, 9,771,888 against, per its Form 8-K filed May 12, 2026 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item.

Reported outcome: not verified — the filing’s own statement of the outcome could not be identified for this item.
Support: 96% of votes cast — FOR ÷ (FOR + AGAINST); abstentions and broker non-votes are excluded.

The 150 asset managers below reported 106,703,895 for, 63,917 against, 272,347 abstained, 224 not voted, 1,315 unknown.

FOR

FOR: 106,703,895AGAINST: 63,917ABSTAIN: 272,347UNKNOWN: 1,315NOT VOTED: 224

Largest asset managers voting on “For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year ” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	43,657,798	124	4	For
Fidelity	12,275,834	0	0	For
BlackRock	12,103,751	0	0	For
Cohen & Steers	10,035,224	0	0	For
State Street	4,372,119	180	0	For
Charles Schwab	3,881,258	0	0	For
Invesco	2,691,120	0	0	For
Principal	1,898,920	0	0	For
Capital Group	1,867,169	0	0	For
TIAA	1,533,574	0	0	For
Prudential/PGIM	983,700	0	0	For
DWS	781,504	0	0	For
BARON SELECT FUNDS	544,950	0	0	For
Dimensional	443,875	0	0	For
American Century	439,142	0	0	For
MASTER INVESTMENT PORTFOLIO	410,680	0	0	For
JPMorgan	401,015	0	0	For
Russell Investments	384,109	0	0	For
John Hancock	322,323	0	0	For
New York Life	319,888	0	0	For
Lincoln Financial	312,720	0	0	For
Brighthouse	281,511	0	6,804	For
T. Rowe Price	286,312	0	0	For
Virtus	276,120	0	0	For
Apollo Diversified Real Estate Fund	0	0	265,539	Abstain

Showing the 25 largest of 150 asset managers. See all 150 in the interactive database.

6. Elect Director: Monte Ford

Outcome not verifiedDIRECTOR ELECTIONSReported outcome: Not verified

Combines 9 wordings of this item as funds reported it.

99.0% Majority: yes · of votes cast

FOR 99.0%

FOR: 229,673,232AGAINST: 2,176,206

Details: description as filed, official tally, votes by 150 asset managers

Iron Mountain Incorporated’s own tally for this item (“Elect Director: Monte Ford”): 229,673,232 for, 2,176,206 against, per its Form 8-K filed May 12, 2026 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item.

Reported outcome: not verified — the filing’s own statement of the outcome could not be identified for this item.
Support: 99.0% of votes cast — FOR ÷ (FOR + AGAINST); abstentions and broker non-votes are excluded.

The 150 asset managers below reported 106,748,281 for, 19,531 against, 272,347 abstained, 224 not voted, 1,315 unknown.

FOR

FOR: 106,748,281AGAINST: 19,531ABSTAIN: 272,347UNKNOWN: 1,315NOT VOTED: 224

Largest asset managers voting on “For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year ” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	43,657,906	16	4	For
Fidelity	12,275,834	0	0	For
BlackRock	12,103,751	0	0	For
Cohen & Steers	10,035,224	0	0	For
State Street	4,372,299	0	0	For
Charles Schwab	3,881,258	0	0	For
Invesco	2,691,120	0	0	For
Principal	1,898,920	0	0	For
Capital Group	1,867,169	0	0	For
TIAA	1,533,574	0	0	For
Prudential/PGIM	983,700	0	0	For
DWS	781,504	0	0	For
BARON SELECT FUNDS	544,950	0	0	For
Dimensional	443,875	0	0	For
American Century	439,142	0	0	For
MASTER INVESTMENT PORTFOLIO	410,680	0	0	For
JPMorgan	401,015	0	0	For
Russell Investments	384,109	0	0	For
John Hancock	322,323	0	0	For
New York Life	319,888	0	0	For
Lincoln Financial	312,720	0	0	For
Brighthouse	281,511	0	6,804	For
T. Rowe Price	286,312	0	0	For
Virtus	276,120	0	0	For
Apollo Diversified Real Estate Fund	0	0	265,539	Abstain

Showing the 25 largest of 150 asset managers. See all 150 in the interactive database.

7. Elect Director: Pamela M. Arway

Outcome not verifiedDIRECTOR ELECTIONSReported outcome: Not verified

Combines 9 wordings of this item as funds reported it.

97% Majority: yes · of votes cast

FOR 97%

FOR: 224,276,516AGAINST: 7,584,348

Details: description as filed, official tally, votes by 150 asset managers

Iron Mountain Incorporated’s own tally for this item (“Elect Director: Pamela M. Arway”): 224,276,516 for, 7,584,348 against, per its Form 8-K filed May 12, 2026 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item.

Reported outcome: not verified — the filing’s own statement of the outcome could not be identified for this item.
Support: 97% of votes cast — FOR ÷ (FOR + AGAINST); abstentions and broker non-votes are excluded.

The 150 asset managers below reported 106,670,478 for, 97,333 against, 272,347 abstained, 224 not voted, 1,315 unknown.

FOR

FOR: 106,670,478AGAINST: 97,333ABSTAIN: 272,347UNKNOWN: 1,315NOT VOTED: 224

Largest asset managers voting on “For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year ” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	43,657,832	89	4	For
Fidelity	12,275,834	0	0	For
BlackRock	12,103,751	0	0	For
Cohen & Steers	10,035,224	0	0	For
State Street	4,372,119	180	0	For
Charles Schwab	3,881,258	0	0	For
Invesco	2,691,120	0	0	For
Principal	1,898,920	0	0	For
Capital Group	1,867,169	0	0	For
TIAA	1,533,574	0	0	For
Prudential/PGIM	983,700	0	0	For
DWS	781,504	0	0	For
BARON SELECT FUNDS	544,950	0	0	For
Dimensional	443,875	0	0	For
American Century	439,142	0	0	For
MASTER INVESTMENT PORTFOLIO	410,680	0	0	For
JPMorgan	401,015	0	0	For
Russell Investments	384,109	0	0	For
John Hancock	322,323	0	0	For
New York Life	319,888	0	0	For
Lincoln Financial	312,720	0	0	For
Brighthouse	281,511	0	6,804	For
T. Rowe Price	286,312	0	0	For
Virtus	276,120	0	0	For
Apollo Diversified Real Estate Fund	0	0	265,539	Abstain

Showing the 25 largest of 150 asset managers. See all 150 in the interactive database.

8. Elect Director: Robin L. Matlock

Outcome not verifiedDIRECTOR ELECTIONSReported outcome: Not verified

Combines 9 wordings of this item as funds reported it.

98% Majority: yes · of votes cast

FOR 98%

FOR: 228,348,027AGAINST: 3,510,121

Details: description as filed, official tally, votes by 150 asset managers

Iron Mountain Incorporated’s own tally for this item (“Elect Director: Robin L. Matlock”): 228,348,027 for, 3,510,121 against, per its Form 8-K filed May 12, 2026 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item.

The 150 asset managers below reported 106,766,120 for, 1,693 against, 272,347 abstained, 224 not voted, 1,315 unknown.

FOR

FOR: 106,766,120AGAINST: 1,693ABSTAIN: 272,347UNKNOWN: 1,315NOT VOTED: 224

Largest asset managers voting on “For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year ” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	43,657,875	48	4	For
Fidelity	12,275,834	0	0	For
BlackRock	12,103,751	0	0	For
Cohen & Steers	10,035,224	0	0	For
State Street	4,372,299	0	0	For
Charles Schwab	3,881,258	0	0	For
Invesco	2,691,120	0	0	For
Principal	1,898,920	0	0	For
Capital Group	1,867,169	0	0	For
TIAA	1,533,574	0	0	For
Prudential/PGIM	983,700	0	0	For
DWS	781,504	0	0	For
BARON SELECT FUNDS	544,950	0	0	For
Dimensional	443,875	0	0	For
American Century	439,142	0	0	For
MASTER INVESTMENT PORTFOLIO	410,680	0	0	For
JPMorgan	401,015	0	0	For
Russell Investments	384,109	0	0	For
John Hancock	322,323	0	0	For
New York Life	319,888	0	0	For
Lincoln Financial	312,720	0	0	For
Brighthouse	281,511	0	6,804	For
T. Rowe Price	286,312	0	0	For
Virtus	276,120	0	0	For
Apollo Diversified Real Estate Fund	0	0	265,539	Abstain

Showing the 25 largest of 150 asset managers. See all 150 in the interactive database.

9. Elect Director: Theodore R. Samuels

Outcome not verifiedDIRECTOR ELECTIONSReported outcome: Not verified

Combines 9 wordings of this item as funds reported it.

96% Majority: yes · of votes cast

FOR 96%

FOR: 223,196,685AGAINST: 8,663,281

Details: description as filed, official tally, votes by 150 asset managers

Iron Mountain Incorporated’s own tally for this item (“Elect Director: Theodore R. Samuels”): 223,196,685 for, 8,663,281 against, per its Form 8-K filed May 12, 2026 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item.

The 150 asset managers below reported 106,647,388 for, 120,423 against, 272,347 abstained, 224 not voted, 1,315 unknown.

FOR

FOR: 106,647,388AGAINST: 120,423ABSTAIN: 272,347UNKNOWN: 1,315NOT VOTED: 224

Largest asset managers voting on “For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year ” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	43,626,882	31,040	4	For
Fidelity	12,275,834	0	0	For
BlackRock	12,102,050	1,701	0	For
Cohen & Steers	10,035,224	0	0	For
State Street	4,372,299	0	0	For
Charles Schwab	3,881,258	0	0	For
Invesco	2,691,120	0	0	For
Principal	1,898,920	0	0	For
Capital Group	1,867,169	0	0	For
TIAA	1,533,574	0	0	For
Prudential/PGIM	983,700	0	0	For
DWS	781,504	0	0	For
BARON SELECT FUNDS	544,950	0	0	For
Dimensional	443,875	0	0	For
American Century	439,142	0	0	For
MASTER INVESTMENT PORTFOLIO	410,680	0	0	For
JPMorgan	401,015	0	0	For
Russell Investments	384,109	0	0	For
John Hancock	322,323	0	0	For
New York Life	319,888	0	0	For
Lincoln Financial	312,720	0	0	For
Brighthouse	281,249	262	6,804	For
T. Rowe Price	286,312	0	0	For
Virtus	276,120	0	0	For
Apollo Diversified Real Estate Fund	0	0	265,539	Abstain

Showing the 25 largest of 150 asset managers. See all 150 in the interactive database.

10. Elect Director: Walter C. Rakowich

Outcome not verifiedDIRECTOR ELECTIONSReported outcome: Not verified

Combines 9 wordings of this item as funds reported it.

95% Majority: yes · of votes cast

FOR 95%

FOR: 221,243,149AGAINST: 10,628,182

Details: description as filed, official tally, votes by 150 asset managers

Iron Mountain Incorporated’s own tally for this item (“Elect Director: Walter C. Rakowich”): 221,243,149 for, 10,628,182 against, per its Form 8-K filed May 12, 2026 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item.

Reported outcome: not verified — the filing’s own statement of the outcome could not be identified for this item.
Support: 95% of votes cast — FOR ÷ (FOR + AGAINST); abstentions and broker non-votes are excluded.

The 150 asset managers below reported 106,713,502 for, 54,311 against, 272,347 abstained, 224 not voted, 1,315 unknown.

FOR

FOR: 106,713,502AGAINST: 54,311ABSTAIN: 272,347UNKNOWN: 1,315NOT VOTED: 224

Largest asset managers voting on “For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year ” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	43,657,793	130	4	For
Fidelity	12,275,834	0	0	For
BlackRock	12,103,751	0	0	For
Cohen & Steers	10,035,224	0	0	For
State Street	4,372,119	180	0	For
Charles Schwab	3,881,258	0	0	For
Invesco	2,691,120	0	0	For
Principal	1,898,920	0	0	For
Capital Group	1,867,169	0	0	For
TIAA	1,533,574	0	0	For
Prudential/PGIM	983,700	0	0	For
DWS	781,504	0	0	For
BARON SELECT FUNDS	544,950	0	0	For
Dimensional	443,875	0	0	For
American Century	439,142	0	0	For
MASTER INVESTMENT PORTFOLIO	410,680	0	0	For
JPMorgan	401,015	0	0	For
Russell Investments	384,109	0	0	For
John Hancock	322,323	0	0	For
New York Life	319,888	0	0	For
Lincoln Financial	312,720	0	0	For
Brighthouse	281,511	0	6,804	For
T. Rowe Price	286,312	0	0	For
Virtus	276,120	0	0	For
Apollo Diversified Real Estate Fund	0	0	265,539	Abstain

Showing the 25 largest of 150 asset managers. See all 150 in the interactive database.

11. Elect Director: William L. Meaney

Outcome not verifiedDIRECTOR ELECTIONSReported outcome: Not verified

Combines 9 wordings of this item as funds reported it.

99.3% Majority: yes · of votes cast

FOR 99.3%

FOR: 230,355,967AGAINST: 1,518,355

Details: description as filed, official tally, votes by 150 asset managers

Iron Mountain Incorporated’s own tally for this item (“Elect Director: William L. Meaney”): 230,355,967 for, 1,518,355 against, per its Form 8-K filed May 12, 2026 (Item 5.07). FOR was more than half of the votes cast. Whether the item passed is for the filing to say; its statement has not been read for this item.

Reported outcome: not verified — the filing’s own statement of the outcome could not be identified for this item.
Support: 99.3% of votes cast — FOR ÷ (FOR + AGAINST); abstentions and broker non-votes are excluded.

The 150 asset managers below reported 106,767,712 for, 100 against, 272,347 abstained, 224 not voted, 1,315 unknown.

FOR

FOR: 106,767,712AGAINST: 100ABSTAIN: 272,347UNKNOWN: 1,315NOT VOTED: 224

Largest asset managers voting on “For the election of eleven (11) directors to the Iron Mountain Incorporated Board of Directors for a one-year ” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	43,657,901	22	4	For
Fidelity	12,275,834	0	0	For
BlackRock	12,103,751	0	0	For
Cohen & Steers	10,035,224	0	0	For
State Street	4,372,221	78	0	For
Charles Schwab	3,881,258	0	0	For
Invesco	2,691,120	0	0	For
Principal	1,898,920	0	0	For
Capital Group	1,867,169	0	0	For
TIAA	1,533,574	0	0	For
Prudential/PGIM	983,700	0	0	For
DWS	781,504	0	0	For
BARON SELECT FUNDS	544,950	0	0	For
Dimensional	443,875	0	0	For
American Century	439,142	0	0	For
MASTER INVESTMENT PORTFOLIO	410,680	0	0	For
JPMorgan	401,015	0	0	For
Russell Investments	384,109	0	0	For
John Hancock	322,323	0	0	For
New York Life	319,888	0	0	For
Lincoln Financial	312,720	0	0	For
Brighthouse	281,511	0	6,804	For
T. Rowe Price	286,312	0	0	For
Virtus	276,120	0	0	For
Apollo Diversified Real Estate Fund	0	0	265,539	Abstain

Showing the 25 largest of 150 asset managers. See all 150 in the interactive database.

12. At the Annual Meeting, the Company's stockholders approved a non-binding advisory resolution on the compensation paid…

Official result Fund totals may overlapSECTION 14A SAY-ON-PAY VOTESReported outcome: Approved

Combines 24 wordings of this item as funds reported it.

97% Approved · of votes cast

FOR 97%

FOR: 223,486,130AGAINST: 7,742,108

Details: description as filed, official tally, votes by 854 asset managers

Description as filed by funds: The approval of a non-binding, advisory resolution approving the compensation of our named executive officers as described in the Iron Mountain Incorporated Proxy Statement.

Iron Mountain Incorporated’s own tally for this item (“At the Annual Meeting, the Company's stockholders approved a non-binding advisory resolution on the compensation paid to the Company's named executive officers as disclosed pursuant to Item 402 of Regulation S-K in the P”): 223,486,130 for, 7,742,108 against — passed, per its Form 8-K filed May 12, 2026 (Item 5.07).

Reported outcome: Approved, in the filing’s own words: “At the Annual Meeting, the Company's stockholders approved a non-binding advisory resolution on the compensation paid to the Company's named executive officers as disclosed pursuant to Item 402 of Regulation S-K in the Proxy Statement .”
Support: 97% of votes cast — FOR ÷ (FOR + AGAINST); abstentions and broker non-votes are excluded.

Fund voting reports and institutional-manager reports both cover this item. An institutional manager can report shares that a fund it advises also reports, so the two are shown separately below and never added together, and their sum is not shown (fund and manager reports combined may count the same shares twice).

Fund voting reports: 145 asset managers voting on “The approval of a non-binding, advisory resolution approving the compensation of our named executive officers ” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	43,606,002	51,912	12	For
Fidelity	12,275,834	0	0	For
BlackRock	12,098,584	5,167	0	For
Cohen & Steers	10,035,224	0	0	For
State Street	4,363,900	8,399	0	For
Charles Schwab	3,881,258	0	0	For
Invesco	2,691,120	0	0	For
Principal	1,898,920	0	0	For
Capital Group	1,867,169	0	0	For
TIAA	1,533,574	0	0	For
Prudential/PGIM	983,700	0	0	For
DWS	781,504	0	0	For
BARON SELECT FUNDS	544,950	0	0	For
Dimensional	443,875	0	0	For
American Century	439,142	0	0	For
MASTER INVESTMENT PORTFOLIO	410,680	0	0	For
JPMorgan	401,015	0	0	For
Russell Investments	384,109	0	0	For
John Hancock	322,323	0	0	For
New York Life	319,888	0	0	For
Lincoln Financial	288,289	24,431	0	Mixed
Brighthouse	281,249	262	6,804	For
T. Rowe Price	201,712	84,600	0	Mixed
Virtus	276,120	0	0	For
Apollo Diversified Real Estate Fund	0	0	265,539	Abstain

Fund voting reports, all 145 managers: 106,397,167 for, 317,325 against, 272,355 abstained, 224 not voted. Showing the 25 largest; see all in the interactive database.

Institutional-manager reports: 748 asset managers voting on “The approval of a non-binding, advisory resolution approving the compensation of our named executive officers ” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Vote
BlackRock	18,787,712	1,853	For
State Street	11,533,454	35,733	For
GEODE CAPITAL MANAGEMENT, LLC	8,387,651	0	For
PRINCIPAL GLOBAL INVESTORS	7,778,321	0	For
Fidelity	7,339,630	0	For
Invesco	4,233,678	0	For
Charles Schwab	3,946,911	0	For
Northern Trust	3,409,626	0	For
Vanguard	3,184,578	0	For
Daiwa Securities Group Inc.	2,916,027	0	For
Cohen & Steers	2,804,047	0	For
Prudential/PGIM	2,140,107	0	For
Nuveen	1,986,179	0	For
Legal & General Investment Management Ltd	28,855	1,913,798	Against
Capital Group	1,868,868	0	For
UBS	1,766,457	0	For
MELLON INVESTMENTS Corp	1,396,747	0	For
Russell Investments	1,380,472	0	For
APG Asset Management US Inc.	1,313,980	0	For
PARAMETRIC PORTFOLIO ASSOCIATES LLC	1,254,400	0	For
Contour Asset Management LLC	1,167,315	0	For
CENTERSQUARE INVESTMENT MANAGEMENT LLC	1,138,994	0	For
CBRE INVESTMENT MANAGEMENT LISTED REAL ASSETS LLC	1,132,356	0	For
Amundi	1,088,890	4,218	For
T. Rowe Price	878,075	163,010	Mixed

Institutional-manager reports, all 748 managers: 128,571,925 for, 5,371,118 against, 361,489 abstained, 56,266 not voted, 1,315 unknown. Showing the 25 largest; see all in the interactive database.

13. At the Annual Meeting, the Company's stockholders ratified the appointment of Deloitte & Touche LLP as the Company's…

Official resultAUDIT-RELATEDReported outcome: Approved

Combines 8 wordings of this item as funds reported it.

95% Approved · of votes cast

FOR 95%

FOR: 249,250,207AGAINST: 11,947,700

Details: description as filed, official tally, votes by 149 asset managers

Description as filed by funds: The ratification of the selection by the Audit Committee of Deloitte & Touche LLP as Iron Mountain Incorporated's independent registered public accounting firm for the year ending December 31, 2026.

Iron Mountain Incorporated’s own tally for this item (“At the Annual Meeting, the Company's stockholders ratified the appointment of Deloitte & Touche LLP as the Company's independent registered public accounting firm for the fiscal year ending December 31, 2026. This propos”): 249,250,207 for, 11,947,700 against — passed, per its Form 8-K filed May 12, 2026 (Item 5.07).

Reported outcome: Approved, in the filing’s own words: “At the Annual Meeting, the Company's stockholders ratified the appointment of Deloitte & Touche LLP as the Company's independent registered public accounting firm for the fiscal year ending December 31, 2026.”
Support: 95% of votes cast — FOR ÷ (FOR + AGAINST); abstentions and broker non-votes are excluded.

The 149 asset managers below reported 106,572,879 for, 117,785 against, 272,347 abstained, 224 not voted, 1,315 unknown.

FOR

FOR: 106,572,879AGAINST: 117,785ABSTAIN: 272,347UNKNOWN: 1,315NOT VOTED: 224

Largest asset managers voting on “The ratification of the selection by the Audit Committee of Deloitte & Touche LLP as Iron Mountain Incorporate” at Iron Mountain Incorporated, 2025-2026
Asset manager	For	Against	Abstain	Vote
Vanguard	43,626,835	31,086	4	For
Fidelity	12,275,834	0	0	For
BlackRock	12,102,050	1,701	0	For
Cohen & Steers	10,035,224	0	0	For
State Street	4,372,119	180	0	For
Charles Schwab	3,881,258	0	0	For
Invesco	2,691,120	0	0	For
Principal	1,898,920	0	0	For
Capital Group	1,867,169	0	0	For
TIAA	1,533,574	0	0	For
Prudential/PGIM	983,700	0	0	For
DWS	781,504	0	0	For
BARON SELECT FUNDS	544,950	0	0	For
Dimensional	443,875	0	0	For
American Century	439,142	0	0	For
MASTER INVESTMENT PORTFOLIO	410,680	0	0	For
JPMorgan	401,015	0	0	For
Russell Investments	384,109	0	0	For
John Hancock	322,323	0	0	For
New York Life	319,888	0	0	For
Lincoln Financial	312,720	0	0	For
Brighthouse	281,249	262	6,804	For
T. Rowe Price	286,312	0	0	For
Virtus	276,120	0	0	For
Apollo Diversified Real Estate Fund	0	0	265,539	Abstain

Showing the 25 largest of 149 asset managers. See all 149 in the interactive database.

Not shown here: this season’s fund filings also report 1 item from the meeting of May 29, 2025, which belongs to the 2024-2025 season. A meeting outside this season’s July 1 to June 30 window is not counted in this page’s items or in its totals of asset managers and fund votes.

Largest Iron Mountain Incorporated shareholders voting in 2025-2026

Ranked separately for each type of Form N-PX report. An institutional manager can report shares that a fund it advises also reports, so the two tables can list the same shares and are never added together. Each is ranked by the shares voted on the item that the most managers of that type reported, shown as a share of the 297,478,818 shares outstanding at the time of that meeting.

Fund voting reports: top Iron Mountain Incorporated shareholders by shares voted on “The approval of a non-binding, advisory resolution approving the compensation of our named…”, 2025-2026
#	Asset manager	% of shares outstanding
1	Vanguard	14.68%
2	Fidelity	4.13%
3	BlackRock	4.07%
4	Cohen & Steers	3.37%
5	State Street	1.47%
6	Charles Schwab	1.30%
7	Invesco	0.90%
8	Principal	0.64%
9	Capital Group	0.63%
10	TIAA	0.52%

Institutional-manager reports: top Iron Mountain Incorporated shareholders by shares voted on “The approval of a non-binding, advisory resolution approving the compensation of our named…”, 2025-2026
#	Asset manager	% of shares outstanding
1	BlackRock	6.32%
2	State Street	3.89%
3	GEODE CAPITAL MANAGEMENT, LLC	2.82%
4	PRINCIPAL GLOBAL INVESTORS	2.61%
5	Fidelity	2.47%
6	Invesco	1.42%
7	Charles Schwab	1.33%
8	Northern Trust	1.15%
9	Vanguard	1.07%
10	Daiwa Securities Group Inc.	0.98%

Reported Iron Mountain Incorporated holdings and ownership

As disclosed to the SEC in Form 13F (quarter-end holdings of 30 large managers), Schedules 13D and 13G (beneficial ownership above 5%) and the company’s own proxy statement (DEF 14A). Each row names its form.

Iron Mountain Incorporated holdings and ownership disclosed for the 2025-2026 proxy season
Holder	% outstanding	Disclosure
Vanguard Group	15.67%	13F
BlackRock	11.10%	13F
Vanguard Portfolio Management	8.42%	13G
State Street	5.90%	13F
Cohen & Steers, Inc.	4.89%	13G
FMR (Fidelity)	2.52%	13F
Dimensional Fund Advisors	1.53%	13F
Northern Trust	1.40%	13F
Charles Schwab	1.35%	13F
Invesco	1.32%	13F

Percentages above are of 297,478,818 shares outstanding, as reported by Iron Mountain Incorporated on its Form 10-Q dated March 31, 2026 (see the filing on EDGAR). This is the count contemporaneous with the 2025-2026 meeting, not today’s. Each holding is as of its own filing, which may be dated before or after the meeting.

About this page

Every figure above is derived from filings made with the US Securities and Exchange Commission: Form N-PX, in which registered funds disclose how they voted every proxy and institutional managers disclose their votes on executive pay (say-on-pay, say-on-frequency and golden parachutes), and Form 8-K Item 5.07, in which the company reports its own meeting results. Shares outstanding are taken from Iron Mountain Incorporated’s 10-Q dated March 31, 2026. This page is a static snapshot rebuilt weekly on October 18, 2026; a live search always shows the current data.

At Iron Mountain Incorporated's shareholder meeting held May 7, 2026, in the 2025-2026 proxy season, 854 asset managers reported how they voted on 13 ballot items in their SEC Form N-PX filings, covering 10,308 separate fund positions. On the most widely held item on that ballot — The approval of a non-binding, advisory resolution approving the compensation of our named… — Iron Mountain Incorporated's filing reports the proposal as approved, with 97% support of the votes cast (FOR divided by FOR plus AGAINST, the conventional basis for proxy support; abstentions, broker non-votes and unvoted shares are excluded because none of them took a side). Source: Iron Mountain Incorporated's Form 8-K, Item 5.07, filed with the U.S. Securities and Exchange Commission on May 12, 2026.

Iron Mountain Incorporated proxy season coverage: 2023-2024 · 2024-2025 · 2025-2026 (this page).

Download data (CSV): ballot items · votes by manager · column guide.