AMT

SEC source: 0002000070-26-000002 · wk-form4_1772659236.xml · nonDerivative · entry 4

Noel Eugene M · CIK 0002000070 · EVP & Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 36,577

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2025.

F5 · price: Represents the weighted average price of shares sold in multiple same-day transactions at prices ranging from $190.92 to $191.91 per share.

SEC source: 0002000070-26-000002 · wk-form4_1772659236.xml · nonDerivative · entry 3

Noel Eugene M · CIK 0002000070 · EVP & Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 58,181

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2025.

F4 · price: Represents the weighted average price of shares sold in multiple same-day transactions at prices ranging from $189.92 to $190.88 per share.

SEC source: 0002000070-26-000002 · wk-form4_1772659236.xml · nonDerivative · entry 2

Noel Eugene M · CIK 0002000070 · EVP & Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 65,559

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2025.

F3 · price: Represents the weighted average price of shares sold in multiple same-day transactions at prices ranging from $188.82 to $189.78 per share.

SEC source: 0002000070-26-000002 · wk-form4_1772659236.xml · nonDerivative · entry 1

Noel Eugene M · CIK 0002000070 · EVP & Chief Operating Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 70,801

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 · balance_after: Includes 73 and 46 shares acquired under the issuer's employee stock purchase plan in May 2025 and November 2025, respectively.

SEC source: 0001363889-26-000002 · wk-form4_1772572537.xml · nonDerivative · entry 1

Meyer Robert Joseph · CIK 0001363889 · SVP & Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,461

F1 · balance_after: Includes 121 shares acquired under the issuer's employee stock purchase plan in May 2025.

SEC source: 0001960785-26-000004 · wk-form4_1772572431.xml · nonDerivative · entry 1

Dowling Ruth T · CIK 0001960785 · EVP, Chief Admin Ofr, GC & Sec

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 31,729

F1 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on October 29, 2025.

SEC source: 0001960785-26-000002 · wk-form4_1772226601.xml · nonDerivative · entry 1

Dowling Ruth T · CIK 0001960785 · EVP, Chief Admin Ofr, GC & Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,385

F1 · shares: Reflects the number of performance-based restricted stock units ("PSUs") earned, as a result of the Compensation and Human Capital Committee's certification to the achievement of performance based on a three-year performance period, under the terms of a PSU award granted on March 10, 2023. These shares will vest three years from the grant date of such PSU award, and each PSU represents a contingent right to receive one share of Common Stock.

F2 · balance_after: Includes 40 shares acquired under the issuer's employee stock purchase plan in November 2025.

SEC source: 0001749304-26-000002 · wk-form4_1772226393.xml · nonDerivative · entry 1

Vondran Steven O · CIK 0001749304 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 105,374

F1 · shares: Reflects the number of performance-based restricted stock units ("PSUs") earned, as a result of the Compensation and Human Capital Committee's certification to the achievement of performance based on a three-year performance period, under the terms of a PSU award granted on March 10, 2023. These shares will vest three years from the grant date of such PSU award, and each PSU represents a contingent right to receive one share of Common Stock.

SEC source: 0001807541-26-000004 · wk-form4_1772226496.xml · nonDerivative · entry 1

Smith Rodney M · CIK 0001807541 · EVP, CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 95,739

F1 · shares: Reflects the number of performance-based restricted stock units ("PSUs") earned, as a result of the Compensation and Human Capital Committee's certification to the achievement of performance based on a three-year performance period, under the terms of a PSU award granted on March 10, 2023. These shares will vest three years from the grant date of such PSU award, and each PSU represents a contingent right to receive one share of Common Stock.

SEC source: 0001807541-26-000002 · wk-form4_1771535252.xml · derivative · entry 6

Smith Rodney M · CIK 0001807541 · EVP, CFO & Treasurer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 34,341 shares

Expires 2026-03-10

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.

F6 · derivative.exercise_date: This option was granted pursuant to the 2007 Equity Incentive Plan, as amended, and is exercisable in 25% cumulative annual increments beginning March 10, 2017.

SEC source: 0001807541-26-000002 · wk-form4_1771535252.xml · nonDerivative · entry 5

Smith Rodney M · CIK 0001807541 · EVP, CFO & Treasurer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 74,314

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 22, 2025.

SEC source: 0001807541-26-000002 · wk-form4_1771535252.xml · nonDerivative · entry 4

Smith Rodney M · CIK 0001807541 · EVP, CFO & Treasurer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 74,315

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 22, 2025.

F5 · price: Represents the weighted average price of shares sold in multiple same-day transactions at prices ranging from $192.13 to $193.00 per share.

SEC source: 0001807541-26-000002 · wk-form4_1771535252.xml · nonDerivative · entry 3

Smith Rodney M · CIK 0001807541 · EVP, CFO & Treasurer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 96,973

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 22, 2025.

F4 · price: Represents the weighted average price of shares sold in multiple same-day transactions at prices ranging from $191.06 to $192.00 per share.

SEC source: 0001807541-26-000002 · wk-form4_1771535252.xml · nonDerivative · entry 2

Smith Rodney M · CIK 0001807541 · EVP, CFO & Treasurer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 106,569

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 22, 2025.

F3 · price: Represents the weighted average price of shares sold in multiple same-day transactions at prices ranging from $189.93 to $190.88 per share.

SEC source: 0001807541-26-000002 · wk-form4_1771535252.xml · nonDerivative · entry 1

Smith Rodney M · CIK 0001807541 · EVP, CFO & Treasurer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 108,655

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 · balance_after: Includes 93 and 26 shares acquired under the issuer's employee stock purchase plan in May 2025 and in November 2025, respectively.

SEC source: 0001733553-26-000002 · wk-form4_1767734833.xml · nonDerivative · entry 1

Font Juan · CIK 0001733553 · SVP, Pres. & CEO, CoreSite

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,054

F1 · kind: Shares delivered to the issuer for the payment of withholding taxes in connection with the vesting of restricted stock units previously granted under the 2007 Equity Incentive Plan, as amended.

F2 · balance_after: Includes 48 shares acquired under the issuer's employee stock purchase plan in November 2025.

SEC source: 0001053507-25-000151 · wk-form4_1762290623.xml · nonDerivative · entry 1

REILLY EUGENE F · CIK 0001266076 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,689

SEC source: 0001053507-25-000144 · wk-form4_1759522276.xml · nonDerivative · entry 1

Dowling Ruth T · CIK 0001960785 · EVP, Chief Admin Ofr, GC & Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,262

F1 · kind: Shares delivered to the issuer for the payment of withholding taxes in connection with the vesting of restricted stock units previously granted under the 2007 Equity Incentive Plan, as amended.

F2 · balance_after: Includes 35 shares acquired under the issuer's employee stock purchase plan in May 2025.

SEC source: 0001053507-25-000141 · wk-form4_1758658687.xml · derivative · entry 2

REILLY EUGENE F · CIK 0001266076 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 100 shares

Expires 2025-09-19

SEC source: 0001053507-25-000122 · wk-form4_1754079077.xml · nonDerivative · entry 1

Font Juan · CIK 0001733553 · SVP, Pres. & CEO, CoreSite

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,425

F1 · balance_after: Includes 41 shares acquired under the issuer's employee stock purchase plan in May 2025.

SEC source: 0001053507-25-000114 · wk-form4_1748981912.xml · nonDerivative · entry 1

Meyer Robert Joseph JR · CIK 0001363889 · SVP & Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,794

F1 · kind: Shares delivered to the issuer for the payment of withholding taxes in connection with the vesting of restricted stock units previously granted under the 2007 Equity Incentive Plan, as amended.

SEC source: 0001053507-25-000084 · wk-form4_1742415686.xml · nonDerivative · entry 1

Goel Sanjay · CIK 0001852058 · EVP & President, Asia-Pacific

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,408

F1 · price: Represents the weighted average price of shares sold in multiple same-day transactions at prices ranging from $215.85 to $215.92 per share.

SEC source: 0001053507-25-000080 · wk-form4_1741814537.xml · nonDerivative · entry 3

Rossi Richard C · CIK 0002053262 · EVP & President, U.S. Tower

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,178

F2 · kind: Shares delivered to the issuer for the payment of withholding taxes in connection with the vesting of RSUs previously granted under the Plan.

SEC source: 0001053507-25-000078 · wk-form4_1741814464.xml · nonDerivative · entry 3

Vondran Steven O · CIK 0001749304 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 80,748

F3 · kind: Shares delivered to the issuer for the payment of withholding taxes in connection with the vesting of RSUs previously granted under the Plan.

SEC source: 0001053507-25-000082 · wk-form4_1741814599.xml · nonDerivative · entry 3

Smith Rodney M · CIK 0001807541 · EVP, CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 74,195

F3 · kind: Shares delivered to the issuer for the payment of withholding taxes in connection with the vesting of RSUs previously granted under the Plan.

SEC source: 0001053507-25-000076 · wk-form4_1741814391.xml · nonDerivative · entry 3

Puech Olivier · CIK 0001754833 · EVP & President, International

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,023

F3 · kind: Shares delivered to the issuer for the payment of withholding taxes in connection with the vesting of RSUs previously granted under the Plan.

SEC source: 0001053507-25-000074 · wk-form4_1741814124.xml · nonDerivative · entry 3

Noel Eugene M · CIK 0002000070 · EVP & Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,473

F3 · kind: Shares delivered to the issuer for the payment of withholding taxes in connection with the vesting of RSUs previously granted under the Plan.

SEC source: 0001053507-25-000072 · wk-form4_1741813847.xml · nonDerivative · entry 3

Meyer Robert Joseph JR · CIK 0001363889 · SVP & Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,956

F2 · kind: Shares delivered to the issuer for the payment of withholding taxes in connection with the vesting of RSUs previously granted under the Plan.

SEC source: 0001053507-25-000070 · wk-form4_1741813679.xml · nonDerivative · entry 3

Font Juan · CIK 0001733553 · SVP, Pres. & CEO, CoreSite

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,104

F2 · kind: Shares delivered to the issuer for the payment of withholding taxes in connection with the vesting of RSUs previously granted under the Plan.

SEC source: 0001053507-25-000068 · wk-form4_1741813501.xml · nonDerivative · entry 3

Dowling Ruth T · CIK 0001960785 · EVP, Chief Admin Ofr, GC & Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,282

F3 · kind: Shares delivered to the issuer for the payment of withholding taxes in connection with the vesting of RSUs previously granted under the Plan.

SEC source: 0001053507-25-000060 · wk-form4_1741812393.xml · nonDerivative · entry 1

MACNAB CRAIG · CIK 0001020280 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,106

F1 · shares: These restricted stock units ("RSUs") were granted pursuant to the 2007 Equity Incentive Plan, as amended, and vest on March 10, 2026. Each RSU represents a contingent right to receive one share of Common Stock.

SEC source: 0001053507-25-000080 · wk-form4_1741814537.xml · nonDerivative · entry 2

Rossi Richard C · CIK 0002053262 · EVP & President, U.S. Tower

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,895

F2 · kind: Shares delivered to the issuer for the payment of withholding taxes in connection with the vesting of RSUs previously granted under the Plan.

SEC source: 0001053507-25-000080 · wk-form4_1741814537.xml · nonDerivative · entry 1

Rossi Richard C · CIK 0002053262 · EVP & President, U.S. Tower

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,929

F1 · kind: These restricted stock units ("RSUs") were granted pursuant to the 2007 Equity Incentive Plan, as amended (the "Plan"), and vest 1/3rd annually over three years, commencing one year from the date of grant. Each RSU represents a contingent right to receive one share of Common Stock.

SEC source: 0001053507-25-000078 · wk-form4_1741814464.xml · nonDerivative · entry 2

Vondran Steven O · CIK 0001749304 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 83,010

F2 · kind: Shares delivered to the issuer for the payment of withholding taxes in connection with the vesting of RSUs and performance-based restricted stock units previously granted under the Plan.

SEC source: 0001053507-25-000078 · wk-form4_1741814464.xml · nonDerivative · entry 1

Vondran Steven O · CIK 0001749304 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 93,337

F1 · kind: These restricted stock units ("RSUs") were granted pursuant to the 2007 Equity Incentive Plan, as amended (the "Plan"), and vest 1/3rd annually over three years, commencing one year from the date of grant. Each RSU represents a contingent right to receive one share of Common Stock.

SEC source: 0001053507-25-000082 · wk-form4_1741814599.xml · nonDerivative · entry 2

Smith Rodney M · CIK 0001807541 · EVP, CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,553

F2 · kind: Shares delivered to the issuer for the payment of withholding taxes in connection with the vesting of RSUs and performance-based restricted stock units previously granted under the Plan.

SEC source: 0001053507-25-000082 · wk-form4_1741814599.xml · nonDerivative · entry 1

Smith Rodney M · CIK 0001807541 · EVP, CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 83,767

F1 · kind: These restricted stock units ("RSUs") were granted pursuant to the 2007 Equity Incentive Plan, as amended (the "Plan"), and vest 1/3rd annually over three years, commencing one year from the date of grant. Each RSU represents a contingent right to receive one share of Common Stock.

SEC source: 0001053507-25-000076 · wk-form4_1741814391.xml · nonDerivative · entry 2

Puech Olivier · CIK 0001754833 · EVP & President, International

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 39,232

F2 · kind: Shares delivered to the issuer for the payment of withholding taxes in connection with the vesting of RSUs and performance-based restricted stock units previously granted under the Plan.

SEC source: 0001053507-25-000076 · wk-form4_1741814391.xml · nonDerivative · entry 1

Puech Olivier · CIK 0001754833 · EVP & President, International

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,223

F1 · kind: These restricted stock units ("RSUs") were granted pursuant to the 2007 Equity Incentive Plan, as amended (the "Plan"), and vest 1/3rd annually over three years, commencing one year from the date of grant. Each RSU represents a contingent right to receive one share of Common Stock.

SEC source: 0001053507-25-000074 · wk-form4_1741814124.xml · nonDerivative · entry 2

Noel Eugene M · CIK 0002000070 · EVP & Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,228

F3 · kind: Shares delivered to the issuer for the payment of withholding taxes in connection with the vesting of RSUs previously granted under the Plan.

SEC source: 0001053507-25-000074 · wk-form4_1741814124.xml · nonDerivative · entry 1

Noel Eugene M · CIK 0002000070 · EVP & Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,375

F1 · kind: These restricted stock units ("RSUs") were granted pursuant to the 2007 Equity Incentive Plan, as amended (the "Plan"), and vest 1/3rd annually over three years, commencing one year from the date of grant. Each RSU represents a contingent right to receive one share of Common Stock.

F2 · balance_after: Includes 3 shares acquired under the issuer's employee stock purchase plan in November 2024.

SEC source: 0001053507-25-000072 · wk-form4_1741813847.xml · nonDerivative · entry 2

Meyer Robert Joseph JR · CIK 0001363889 · SVP & Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,673

F2 · kind: Shares delivered to the issuer for the payment of withholding taxes in connection with the vesting of RSUs previously granted under the Plan.

SEC source: 0001053507-25-000072 · wk-form4_1741813847.xml · nonDerivative · entry 1

Meyer Robert Joseph JR · CIK 0001363889 · SVP & Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,904

F1 · kind: These restricted stock units ("RSUs") were granted pursuant to the 2007 Equity Incentive Plan, as amended (the "Plan"), and vest 1/3rd annually over three years, commencing one year from the date of grant. Each RSU represents a contingent right to receive one share of Common Stock.

SEC source: 0001053507-25-000070 · wk-form4_1741813679.xml · nonDerivative · entry 2

Font Juan · CIK 0001733553 · SVP, Pres. & CEO, CoreSite

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,085

F2 · kind: Shares delivered to the issuer for the payment of withholding taxes in connection with the vesting of RSUs previously granted under the Plan.

SEC source: 0001053507-25-000070 · wk-form4_1741813679.xml · nonDerivative · entry 1

Font Juan · CIK 0001733553 · SVP, Pres. & CEO, CoreSite

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,959

F1 · kind: These restricted stock units ("RSUs") were granted pursuant to the 2007 Equity Incentive Plan, as amended (the "Plan"), and vest 1/3rd annually over three years, commencing one year from the date of grant. Each RSU represents a contingent right to receive one share of Common Stock.

SEC source: 0001053507-25-000068 · wk-form4_1741813501.xml · nonDerivative · entry 2

Dowling Ruth T · CIK 0001960785 · EVP, Chief Admin Ofr, GC & Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,187

F3 · kind: Shares delivered to the issuer for the payment of withholding taxes in connection with the vesting of RSUs previously granted under the Plan.

SEC source: 0001053507-25-000068 · wk-form4_1741813501.xml · nonDerivative · entry 1

Dowling Ruth T · CIK 0001960785 · EVP, Chief Admin Ofr, GC & Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,598

F1 · kind: These restricted stock units ("RSUs") were granted pursuant to the 2007 Equity Incentive Plan, as amended (the "Plan"), and vest 1/3rd annually over three years, commencing one year from the date of grant. Each RSU represents a contingent right to receive one share of Common Stock.

F2 · balance_after: Includes 37 shares acquired under the issuer's employee stock purchase plan in November 2024.

SEC source: 0001053507-25-000066 · wk-form4_1741813147.xml · nonDerivative · entry 1

REEVE PAMELA D A · CIK 0001032946 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,690

F1 · shares: These restricted stock units ("RSUs") were granted pursuant to the 2007 Equity Incentive Plan, as amended, and vest on March 10, 2026. Each RSU represents a contingent right to receive one share of Common Stock.

SEC source: 0001053507-25-000064 · wk-form4_1741813039.xml · nonDerivative · entry 1

REED JOANN A · CIK 0001252013 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 62,940

F1 · shares: These restricted stock units ("RSUs") were granted pursuant to the 2007 Equity Incentive Plan, as amended, and vest on March 10, 2026. Each RSU represents a contingent right to receive one share of Common Stock.

SEC source: 0001053507-25-000062 · wk-form4_1741812929.xml · nonDerivative · entry 1

Kalathur Rajesh · CIK 0001555586 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,056

F1 · shares: These restricted stock units ("RSUs") were granted pursuant to the 2007 Equity Incentive Plan, as amended, and vest on March 10, 2026. Each RSU represents a contingent right to receive one share of Common Stock.