Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| IRON MOUNTAIN INCIRM · Entity 517 | Director | May 07, 2026 | May 11, 2026 |
| Ridgepost Capital, Inc.PX · Entity 5006 | 10% owner | October 25, 2023 | November 16, 2023 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
IRON MOUNTAIN INC
Report date May 07, 2026 · Filed May 11, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common Stock, par value $.01 per shareSEC Table I · non-derivative | Direct | 1,209,573 |
Reported balance
After 2026-05-07 transaction · row 1
1 source rowRow 1 · 2026-05-07 · Grant · Acquired 1,892 · Balance 1,209,573 F1: Consists of shares issuable upon the settlement of restricted stock units ("RSUs") granted on May 7, 2026. The RSUs vest in their entirety on the grant date. |
Filing footnotes · ownership attribution and instrument terms
F1: Consists of shares issuable upon the settlement of restricted stock units ("RSUs") granted on May 7, 2026. The RSUs vest in their entirety on the grant date.
Ridgepost Capital, Inc.
Report date October 25, 2023 · Filed November 16, 2023
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Class A Common StockSEC Table I · non-derivative | Direct | 6,274,938 |
Reported balance
Holding disclosure · report date 2023-10-25 · row 1
Holding and transaction disclosures are not merged.
1 source rowRow 1 · Balance 6,274,938 |
| Class A Common StockSEC Table I · non-derivative | IndirectBy Amanda Porter Dauten GST Descendant's Trust | 77,038 |
Reported balance
Holding disclosure · report date 2023-10-25 · row 2
Holding and transaction disclosures are not merged.
1 source rowRow 2 · Balance 77,038 |
| Class A Common StockSEC Table I · non-derivative | IndirectBy Benjamin Paul Dauten GST Descendant's Trust | 77,038 |
Reported balance
Holding disclosure · report date 2023-10-25 · row 3
Holding and transaction disclosures are not merged.
1 source rowRow 3 · Balance 77,038 |
| Class A Common StockSEC Table I · non-derivative | IndirectBy Jenna Stewart Dauten GST Descendant's Trust | 77,038 |
Reported balance
Holding disclosure · report date 2023-10-25 · row 4
Holding and transaction disclosures are not merged.
1 source rowRow 4 · Balance 77,038 |
| Class A Common StockSEC Table I · non-derivative | IndirectBy Katherine Margaret Dauten GST Descendant's Trust | 77,038 |
Reported balance
Holding disclosure · report date 2023-10-25 · row 5
Holding and transaction disclosures are not merged.
1 source rowRow 5 · Balance 77,038 |
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| May 07, 2026 Filed May 11, 2026 21:21 UTC | IRON MOUNTAIN INC IRM · Entity 517 | GrantCommon Stock, par value $.01 per share | 1,892 | $0.00 | $0.00 |
DisclosureSEC source: 0001049128-26-000002 · wk-form4_1778534509.xml · nonDerivative · entry 1 DAUTEN KENT P · CIK 0001049128 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,209,573 F1 · shares: Consists of shares issuable upon the settlement of restricted stock units ("RSUs") granted on May 7, 2026. The RSUs vest in their entirety on the grant date. Read SEC document |
| May 29, 2025 Filed Jun 2, 2025 20:17 UTC | IRON MOUNTAIN INC IRM · Entity 517 | GrantCommon Stock, par value $.01 per share | 2,249 | $0.00 | $0.00 |
DisclosureSEC source: 0001020569-25-000124 · wk-form4_1748895419.xml · nonDerivative · entry 1 DAUTEN KENT P · CIK 0001049128 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,207,681 F1 · shares: Consists of shares issuable upon the settlement of restricted stock units ("RSUs") granted on May 29, 2025. The RSUs vest in their entirety on the grant date. Read SEC document |
| September 17, 2024 Filed Sep 18, 2024 22:00 UTC | IRON MOUNTAIN INC IRM · Entity 517 | GiftCommon Stock, par value $.01 per share | 200,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001020569-24-000225 · wk-form4_1726696834.xml · nonDerivative · entry 1 DAUTEN KENT P · CIK 0001049128 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,205,432 F1 · kind: The Reporting Person made a bona fide gift to a charitable organization. Read SEC document |
| August 07, 2024 Filed Aug 8, 2024 20:09 UTC | IRON MOUNTAIN INC IRM · Entity 517 | GiftCommon Stock, par value $.01 per share | 100,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001020569-24-000214 · wk-form4_1723147767.xml · nonDerivative · entry 1 DAUTEN KENT P · CIK 0001049128 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,405,432 F1 · kind: The Reporting Person made a bona fide gift to a charitable organization. Read SEC document |
| May 30, 2024 Filed Jun 3, 2024 21:16 UTC | IRON MOUNTAIN INC IRM · Entity 517 | GrantCommon Stock, par value $.01 per share | 2,385 | $0.01 | $23.85 |
DisclosureSEC source: 0001020569-24-000153 · wk-form4_1717449394.xml · nonDerivative · entry 1 DAUTEN KENT P · CIK 0001049128 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,505,432 F1 · shares: Consists of shares issuable upon the settlement of restricted stock units ("RSUs") granted on May 30, 2024. The RSUs vest on the grant date. Read SEC document |
| May 09, 2023 Filed May 11, 2023 01:13 UTC | IRON MOUNTAIN INC IRM · Entity 517 | GrantCommon Stock, par value $.01 per share | 3,047 | $0.01 | $30.47 |
DisclosureSEC source: 0001020569-23-000118 · wf-form4_168376757229147.xml · nonDerivative · entry 1 DAUTEN KENT P · CIK 0001049128 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,503,047 F1 · shares: Consists of shares issuable upon the settlement of restricted stock units ("RSUs") granted on May 9, 2023. The RSUs vest on the grant date. Read SEC document |
| December 15, 2022 Filed Dec 20, 2022 21:49 UTC | IRON MOUNTAIN INC IRM · Entity 517 | GiftCommon Stock, par value $.01 per share | 23,717 | $0.00 | $0.00 |
DisclosureSEC source: 0001020569-22-000218 · wf-form4_167157293597478.xml · nonDerivative · entry 1 DAUTEN KENT P · CIK 0001049128 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 1,500,000 F1 · price: The Reporting Person made a bona fide gift to a charitable organization. Read SEC document |
| May 10, 2022 Filed May 13, 2022 20:47 UTC | IRON MOUNTAIN INC IRM · Entity 517 | GrantCommon Stock, par value $.01 per share | 3,300 | $0.01 | $33.00 |
DisclosureSEC source: 0001020569-22-000119 · wf-form4_165247479303009.xml · nonDerivative · entry 1 DAUTEN KENT P · CIK 0001049128 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 1,523,717 F1 · shares: Consists of shares issuable upon the settlement of restricted stock units ("RSUs") granted on May 10, 2022. The RSUs vest on the grant date. Read SEC document |
| December 15, 2021 Filed Jan 4, 2022 01:57 UTC | IRON MOUNTAIN INC IRM · Entity 517 | GiftCommon Stock, par value $.01 per share | 500,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001020569-22-000002 · wf-form4_164126140422646.xml · nonDerivative · entry 1 DAUTEN KENT P · CIK 0001049128 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 1,520,417 F1 · price: The Reporting Person made a bona fide gift to a charitable organization. Read SEC document |
| May 12, 2021 Filed May 14, 2021 20:31 UTC | IRON MOUNTAIN INC IRM · Entity 517 | GrantCommon Stock, par value $.01 per share | 3,933 | $0.01 | $39.33 |
DisclosureSEC source: 0001020569-21-000154 · wf-form4_162102424373937.xml · nonDerivative · entry 1 DAUTEN KENT P · CIK 0001049128 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,020,417 F1 · shares: Consists of shares issuable upon the settlement of restricted stock units ("RSUs") granted on May 12, 2021. The RSUs vest on the grant date. Read SEC document |
| May 13, 2020 Filed May 15, 2020 22:04 UTC | IRON MOUNTAIN INC IRM · Entity 517 | GrantCommon Stock, par value $.01 per share | 7,011 | $0.01 | $70.11 |
DisclosureSEC source: 0001020569-20-000153 · wf-form4_158958024926502.xml · nonDerivative · entry 1 DAUTEN KENT P · CIK 0001049128 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,016,484 F1 · shares: Consists of shares issuable upon the settlement of restricted stock units ("RSUs") granted on May 13, 2020. The RSUs vest on the grant date. Read SEC document |
| May 22, 2019 Filed May 24, 2019 21:15 UTC | IRON MOUNTAIN INC IRM · Entity 517 | GrantCommon Stock, par value $.01 per share | 5,060 | $0.01 | $50.60 |
DisclosureSEC source: 0001020569-19-000161 · wf-form4_155873252554834.xml · nonDerivative · entry 1 DAUTEN KENT P · CIK 0001049128 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,009,473 F1 · shares: Consists of shares issuable upon the settlement of restricted stock units ("RSUs") granted on May 22, 2019. The RSUs vest on the grant date. Read SEC document |
| June 14, 2018 Filed Jun 19, 2018 01:08 UTC | IRON MOUNTAIN INC IRM · Entity 517 | GrantCommon Stock, par value $.01 per share | 4,413 | $0.01 | $44.13 |
DisclosureSEC source: 0001104659-18-040901 · a4.xml · nonDerivative · entry 2 DAUTEN KENT P · CIK 0001049128 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,004,413 F2 · shares: Consists of shares issuable upon the settlement of restricted stock units ("RSUs") granted on June 14, 2018. The RSUs vest on the grant date. Read SEC document |
| June 06, 2018 Filed Jun 19, 2018 01:08 UTC | IRON MOUNTAIN INC IRM · Entity 517 | GiftCommon Stock, par value $.01 per share | 46,601 | $0.00 | $0.00 |
DisclosureSEC source: 0001104659-18-040901 · a4.xml · nonDerivative · entry 1 DAUTEN KENT P · CIK 0001049128 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,000,000 F1 · price: The Reporting Person made a bona fide gift to a charitable organization. Read SEC document |
| May 10, 2018 Filed May 14, 2018 22:02 UTC | IRON MOUNTAIN INC IRM · Entity 517 | Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative | 15,555 | $0.00 Strike: $19.25 | $0.00 |
DisclosureSEC source: 0001020569-18-000058 · wf-form4_152633531056751.xml · derivative · entry 6 DAUTEN KENT P · CIK 0001049128 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 15,555 shares Expires 2020-06-04 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_date: This stock option, representing a right to purchase a total of 15,555 shares, is fully vested. The number of stock options granted includes previously reported adjustments effective on September 26, 2014 made in connection with the Special Distribution. Read SEC document |
| May 10, 2018 Filed May 14, 2018 22:02 UTC | IRON MOUNTAIN INC IRM · Entity 517 | Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative | 9,108 | $0.00 Strike: $23.03 | $0.00 |
DisclosureSEC source: 0001020569-18-000058 · wf-form4_152633531056751.xml · derivative · entry 5 DAUTEN KENT P · CIK 0001049128 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 9,108 shares Expires 2019-06-04 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · derivative.exercise_date: This stock option, representing a right to purchase a total of 9,108 shares, is fully vested. The number of stock options granted includes previously reported adjustments effective on September 26, 2014 made in connection with the Special Distribution. Read SEC document |
| May 10, 2018 Filed May 14, 2018 22:02 UTC | IRON MOUNTAIN INC IRM · Entity 517 | Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative | 9,261 | $0.00 Strike: $24.90 | $0.00 |
DisclosureSEC source: 0001020569-18-000058 · wf-form4_152633531056751.xml · derivative · entry 4 DAUTEN KENT P · CIK 0001049128 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 9,261 shares Expires 2018-06-05 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_date: This stock option, representing a right to purchase a total of 9,261 shares, is fully vested. The number of stock options granted includes previously reported adjustments effective on September 26, 2014 made in connection with the special distribution declared by the Board of Directors of the Issuer on September 15, 2014 and paid on November 4, 2014 (the "Special Distribution"). Read SEC document |
| May 10, 2018 Filed May 14, 2018 22:02 UTC | IRON MOUNTAIN INC IRM · Entity 517 | Exercise / conversionCommon Stock, par value $.01 per share | 15,555 | $19.25 | $299,449.31 |
DisclosureSEC source: 0001020569-18-000058 · wf-form4_152633531056751.xml · nonDerivative · entry 3 DAUTEN KENT P · CIK 0001049128 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,046,601 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| May 10, 2018 Filed May 14, 2018 22:02 UTC | IRON MOUNTAIN INC IRM · Entity 517 | Exercise / conversionCommon Stock, par value $.01 per share | 9,108 | $23.03 | $209,784.56 |
DisclosureSEC source: 0001020569-18-000058 · wf-form4_152633531056751.xml · nonDerivative · entry 2 DAUTEN KENT P · CIK 0001049128 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,031,046 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| May 10, 2018 Filed May 14, 2018 22:02 UTC | IRON MOUNTAIN INC IRM · Entity 517 | Exercise / conversionCommon Stock, par value $.01 per share | 9,261 | $24.90 | $230,617.42 |
DisclosureSEC source: 0001020569-18-000058 · wf-form4_152633531056751.xml · nonDerivative · entry 1 DAUTEN KENT P · CIK 0001049128 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,021,938 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| May 24, 2017 Filed May 26, 2017 22:40 UTC | IRON MOUNTAIN INC IRM · Entity 517 | GrantCommon Stock, par value $.01 per share | 3,879 | $0.01 | $38.79 |
DisclosureSEC source: 0001104659-17-035800 · a4.xml · nonDerivative · entry 1 DAUTEN KENT P · CIK 0001049128 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,012,677 F1 · shares: Consists of shares issuable upon the settlement of restricted stock units ("RSUs") granted on May 24, 2017. The RSUs vest on the grant date. Read SEC document |
| May 19, 2017 Filed May 23, 2017 23:17 UTC | IRON MOUNTAIN INC IRM · Entity 517 | Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative | 8,798 | $0.00 Strike: $22.43 | $0.00 |
DisclosureSEC source: 0001104659-17-034671 · a4.xml · derivative · entry 2 DAUTEN KENT P · CIK 0001049128 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 8,798 shares Expires 2017-05-23 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_date: This stock option, representing a right to purchase a total of 8,798 shares of Common Stock, is fully vested. The number of stock options granted includes previously reported adjustments effective on September 26, 2014 made in connection with the special distribution declared by the Board of Directors of Iron Mountain Incorporated on September 15, 2014 and paid on November 4, 2014. Read SEC document |
| May 19, 2017 Filed May 23, 2017 23:17 UTC | IRON MOUNTAIN INC IRM · Entity 517 | Exercise / conversionCommon Stock, par value $.01 per share | 8,798 | $22.43 | $197,330.34 |
DisclosureSEC source: 0001104659-17-034671 · a4.xml · nonDerivative · entry 1 DAUTEN KENT P · CIK 0001049128 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,008,798 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| December 12, 2016 Filed Dec 28, 2016 21:11 UTC | IRON MOUNTAIN INC IRM · Entity 517 | GiftCommon Stock, par value $.01 per share | 54,447 | $0.00 | $0.00 |
DisclosureSEC source: 0001104659-16-164064 · a4.xml · nonDerivative · entry 1 DAUTEN KENT P · CIK 0001049128 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,000,000 F1 · price: The Reporting Person made a bona fide gift to a charitable organization. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.