X0508 4 2026-02-26 0 0001674101 Vertiv Holdings Co VRT 0001246989 FRADIN ROGER C/O VERTIV HOLDINGS CO 505 N. CLEVELAND AVE WESTERVILLE OH 43082 1 0 0 0 0 Class A Common Stock 2026-02-26 4 S 0 18561 252.61 D 90606 I By R VRT GRAT 2025 Class A Common Stock 2026-02-26 4 S 0 9056 253.67 D 81550 I By R VRT GRAT 2025 Class A Common Stock 2026-02-26 4 S 0 8216 254.70 D 73334 I By R VRT GRAT 2025 Class A Common Stock 2026-02-26 4 S 0 1251 255.24 D 72083 I By R VRT GRAT 2025 Class A Common Stock 2026-02-27 4 S 0 20808 251.61 D 51275 I By R VRT GRAT 2025 Class A Common Stock 2026-02-27 4 S 0 16275 252.26 D 35000 I By R VRT GRAT 2025 Class A Common Stock 2026-02-26 4 S 0 27354 252.61 D 81812 I By S VRT GRAT 2025 Class A Common Stock 2026-02-26 4 S 0 13287 253.67 D 68525 I By S VRT GRAT 2025 Class A Common Stock 2026-02-26 4 S 0 12098 254.70 D 56427 I By S VRT GRAT 2025 Class A Common Stock 2026-02-26 4 S 0 1844 255.24 D 54583 I By S VRT GRAT 2025 Class A Common Stock 2026-02-27 4 S 0 20909 251.62 D 33674 I By S VRT GRAT 2025 Class A Common Stock 2026-02-27 4 S 0 17293 252.29 D 16381 I By S VRT GRAT 2025 Class A Common Stock 2026-02-27 4 S 0 16181 253.49 D 200 I By S VRT GRAT 2025 Class A Common Stock 2026-02-27 4 S 0 200 254.09 D 0 I By S VRT GRAT 2025 Class A Common Stock 2026-02-26 4 S 0 5003 252.61 D 44997 I By R VRT GRAT 2024 II Class A Common Stock 2026-02-26 4 S 0 2448 253.67 D 42549 I By R VRT GRAT 2024 II Class A Common Stock 2026-02-26 4 S 0 2210 254.70 D 40339 I By R VRT GRAT 2024 II Class A Common Stock 2026-02-26 4 S 0 339 255.24 D 40000 I By R VRT GRAT 2024 II Class A Common Stock 2026-02-27 4 S 0 9470 251.53 D 30530 I By R VRT GRAT 2024 II Class A Common Stock 2026-02-27 4 S 0 530 252.02 D 30000 I By R VRT GRAT 2024 II Class A Common Stock 18313 I By R VRT GRAT 2025 II Class A Common Stock 18313 I By S VRT GRAT 2025 II Class A Common Stock 50000 I By S VRT GRAT 2024 II Stock Option 12.05 2030-02-07 Class A Common Stock 38647 38647 D Stock Option 20.56 2031-02-04 Class A Common Stock 38647 38647 D Stock Option 11.50 2032-03-03 Class A Common Stock 38647 38647 D Stock Option 15.84 2033-03-07 Class A Common Stock 30000 30000 D Stock Option 72.09 2034-03-07 Class A Common Stock 15000 15000 D Stock Option 85.04 2035-03-07 Class A Common Stock 15000 15000 D The trade was executed in a series of transactions with a price range of $252.15 to $253.14, inclusive, with a weighted average price of $252.61. The reporting person undertakes to provide to Vertiv Holdings Co, any security holder of Vertiv Holdings Co, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote and in footnotes 2 through 12, inclusive. The trade was executed in a series of transactions with a price range of $253.15 to $254.14, inclusive, with a weighted average price of $253.67. The trade was executed in a series of transactions with a price range of $254.15 to $255.145, inclusive, with a weighted average price of $254.70. The trade was executed in a series of transactions with a price range of $255.15 to $255.48, inclusive, with a weighted average price of $255.24. The trade was executed in a series of transactions with a price range of $251.01 to $252.00, inclusive, with a weighted average price of $251.61. The trade was executed in a series of transactions with a price range of $252.01 to $252.60, inclusive, with a weighted average price of $252.26. The trade was executed in a series of transactions with a price range of $251.03 to $252.02, inclusive, with a weighted average price of $251.62. The trade was executed in a series of transactions with a price range of $252.03 to $252.60, inclusive, with a weighted average price of $252.29. The trade was executed in a series of transactions with a price range of $253.08 to $254.04, inclusive, with a weighted average price of $253.49. The trade was executed in a series of transactions with a price range of $254.08 to $254.10, inclusive, with a weighted average price of $254.09. The trade was executed in a series of transactions with a price range of $251.00 to $251.98, inclusive, with a weighted average price of $251.53. The trade was executed in a series of transactions with a price range of $252.00 to $252.09, inclusive, with a weighted average price of $252.02. Consists of 38,647 stock options granted on February 7, 2020, which vested as to 9,661 on February 7, 2021 and as to 9,662 on each of February 7, 2022, February 7, 2023 and February 7, 2024. Consists of 38,647 stock options granted on February 4, 2021, which vested as to 9,662 on each of February 4, 2022, February 4, 2023 and February 4, 2024, and as to 9,661 on February 4, 2025. Consists of 38,647 stock options granted on March 3, 2022, which vested as to 9,661 on March 3, 2023 and as to 9,662 on each of March 3, 2024 and March 3, 2025, and which will vest as to 9,662 on March 3, 2026. Consists of 30,000 stock options granted on March 7, 2023, which vested as to 7,500 on each of March 15, 2024 and March 15, 2025, and which will vest as to 7,500 on each of March 15, 2026 and March 15, 2027. Consists of 15,000 stock options granted on March 7, 2024, which vested as to 3,750 on March 15, 2025, and which will vest as to 3,750 on each of March 15, 2026, March 15, 2027 and March 15, 2028. Consists of 15,000 stock options granted on March 7, 2025, which will vest as to 3,750 on each of March 15, 2026, March 15, 2027, March 15, 2028 and March 15, 2029. /s/ Eric Boxterman, as attorney-in-fact 2026-03-02