Exhibit 99.1 Joint Filer Information Name of Joint Filer: VPE Holdings, LLC Address of Joint Filer: c/o Platinum Equity Advisors, LLC 360 North Crescent Drive, South Building Beverly Hills, CA 90210 Relationship of Joint Filer to Issuer: 10% Owner, Director Issuer Name and Ticker or Trading Symbol: Vertiv Holdings Co (VRT) Date of Event Requiring Statement: 08/17/2020 (Month/Day/Year) Designated Filer: VPE Holdings, LLC Name of Joint Filer: Vertiv JV Holdings, LLC Address of Joint Filer: c/o Platinum Equity Advisors, LLC 360 North Crescent Drive, South Building Beverly Hills, CA 90210 Relationship of Joint Filer to Issuer: 10% Owner, Director Issuer Name and Ticker or Trading Symbol: Vertiv Holdings Co (VRT) Date of Event Requiring Statement: 08/17/2020 (Month/Day/Year) Designated Filer: VPE Holdings, LLC Name of Joint Filer: PE Vertiv Holdings, LLC Address of Joint Filer: c/o Platinum Equity Advisors, LLC 360 North Crescent Drive, South Building Beverly Hills, CA 90210 Relationship of Joint Filer to Issuer: 10% Owner, Director Issuer Name and Ticker or Trading Symbol: Vertiv Holdings Co (VRT) Date of Event Requiring Statement: 08/17/2020 (Month/Day/Year) Designated Filer: VPE Holdings, LLC Name of Joint Filer: Platinum Equity Investment Holdings III, LLC Address of Joint Filer: c/o Platinum Equity Advisors, LLC 360 North Crescent Drive, South Building Beverly Hills, CA 90210 Relationship of Joint Filer to Issuer: 10% Owner, Director Issuer Name and Ticker or Trading Symbol: Vertiv Holdings Co (VRT) Date of Event Requiring Statement: 08/17/2020 (Month/Day/Year) Designated Filer: VPE Holdings, LLC Name of Joint Filer: Platinum Equity Investment Holdings Manager III, LLC Address of Joint Filer: c/o Platinum Equity Advisors, LLC 360 North Crescent Drive, South Building Beverly Hills, CA 90210 Relationship of Joint Filer to Issuer: 10% Owner, Director Issuer Name and Ticker or Trading Symbol: Vertiv Holdings Co (VRT) Date of Event Requiring Statement: 08/17/2020 (Month/Day/Year) Designated Filer: VPE Holdings, LLC Name of Joint Filer: Platinum Equity InvestCo, L.P. Address of Joint Filer: c/o Platinum Equity Advisors, LLC 360 North Crescent Drive, South Building Beverly Hills, CA 90210 Relationship of Joint Filer to Issuer: 10% Owner, Director Issuer Name and Ticker or Trading Symbol: Vertiv Holdings Co (VRT) Date of Event Requiring Statement: 08/17/2020 (Month/Day/Year) Designated Filer: VPE Holdings, LLC Name of Joint Filer: Platinum Equity Investment Holdings IC (Cayman), LLC Address of Joint Filer: c/o Platinum Equity Advisors, LLC 360 North Crescent Drive, South Building Beverly Hills, CA 90210 Relationship of Joint Filer to Issuer: 10% Owner, Director Issuer Name and Ticker or Trading Symbol: Vertiv Holdings Co (VRT) Date of Event Requiring Statement: 08/17/2020 (Month/Day/Year) Designated Filer: VPE Holdings, LLC Name of Joint Filer: Platinum InvestCo (Cayman), LLC Address of Joint Filer: c/o Platinum Equity Advisors, LLC 360 North Crescent Drive, South Building Beverly Hills, CA 90210 Relationship of Joint Filer to Issuer: 10% Owner, Director Issuer Name and Ticker or Trading Symbol: Vertiv Holdings Co (VRT) Date of Event Requiring Statement: 08/17/2020 (Month/Day/Year) Designated Filer: VPE Holdings, LLC Name of Joint Filer: Platinum Equity Investment Holdings, LLC Address of Joint Filer: c/o Platinum Equity Advisors, LLC 360 North Crescent Drive, South Building Beverly Hills, CA 90210 Relationship of Joint Filer to Issuer: 10% Owner, Director Issuer Name and Ticker or Trading Symbol: Vertiv Holdings Co (VRT) Date of Event Requiring Statement: 08/17/2020 (Month/Day/Year) Designated Filer: VPE Holdings, LLC Name of Joint Filer: Platinum Equity, LLC Address of Joint Filer: c/o Platinum Equity Advisors, LLC 360 North Crescent Drive, South Building Beverly Hills, CA 90210 Relationship of Joint Filer to Issuer: 10% Owner, Director Issuer Name and Ticker or Trading Symbol: Vertiv Holdings Co (VRT) Date of Event Requiring Statement: 08/17/2020 (Month/Day/Year) Designated Filer: VPE Holdings, LLC Name of Joint Filer: Tom Gores Address of Joint Filer: c/o Platinum Equity Advisors, LLC 360 North Crescent Drive, South Building Beverly Hills, CA 90210 Relationship of Joint Filer to Issuer: 10% Owner, Director Issuer Name and Ticker or Trading Symbol: Vertiv Holdings Co (VRT) Date of Event Requiring Statement: 08/17/2020 (Month/Day/Year) Designated Filer: VPE Holdings, LLC