SSGA ACTIVE TRUST

SPDR^® SSGA Income Allocation ETF

SPDR SSGA Global Allocation ETF

(each a “Fund”, collectively the “Funds”)

Supplement dated February 1, 2019 to the Summary Prospectuses, Prospectus and

Statement of Additional Information (“SAI”) each dated October 31, 2018,

each as may be supplemented from time to time

Effective immediately, Timothy Furbush no longer serves as a Portfolio Manager of either Fund. Accordingly, effective immediately, all references to Timothy Furbush in each Fund’s Summary Prospectus, Prospectus and SAI are deleted in their entirety.

PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE

02012019SUP

SSGA Active Trust

SPDR SSGA Ultra Short Term Bond ETF

(the “Fund”)

Supplement dated February 1, 2019 to the Prospectus dated October 31, 2018,

as may be supplemented from time to time

Effective immediately, Thomas Connelley and Karyn Corridan no longer serve as portfolio managers of the Fund and have been replaced by James Palmieri. Accordingly, all references to Thomas Connelley and Karyn Corridan with respect to the Fund are deleted and the Prospectus is revised as follows:

The professional primarily responsible for the day-to-day management of the Fund is James Palmieri.

James Palmieri, CFA, is a Managing Director of the Adviser and Head of Structure Credit for the Fundamental Active Fixed Income Team. He joined the Adviser in 2016 as part of the State Street Global Advisors acquisition of GE Asset Management.

SPDR SSGA Ultra Short Term Bond ETF

The professional primarily responsible for the day-to-day management of the Fund is James Palmieri.

James Palmieri, CFA, is a Managing Director of SSGA and the Adviser, a Senior Portfolio Manager, and Head of Structured Credit for the Fundamental Active Fixed Income Team. In his role, he is the lead portfolio manager and trader for the Structured Products Group servicing all total rate of return and insurance accounts managed in Stamford, CT. In addition to his portfolio management responsibilities, Mr. Palmieri is a member of the Fixed Income Currency and Cash Senior Leadership Team, and the Fundamental Active Core and Core Plus Fixed Income Team. He joined SSGA in 2016 as part of the SSGA acquisition of GE Asset Management. Prior to joining SSGA, Mr. Palmieri worked at GE Asset Management for eleven years as a senior portfolio manager and trader for all fixed income total rate of return and insurance accounts for GE. Prior to joining GE Asset Management, he worked at Constitution State Corporate Credit Union for one year as an investment director and CIGNA Investment Management for five years as a fixed income portfolio manager. He received his Bachelor of Science from Central Connecticut State University, is a Chartered Financial Analyst (CFA) charter holder, and has twenty years of investment experience.

PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE

02012019SUP1

SSGA Active Trust

SPDR SSGA Ultra Short Term Bond ETF

(the “Fund”)

Supplement dated February 1, 2019 to the Statement of Additional Information (“SAI”) dated

October 31, 2018, as may be supplemented from time to time

Effective immediately, Thomas Connelley and Karyn Corridan no longer serve as portfolio managers of the Fund and have been replaced by James Palmieri. Accordingly, the SAI is revised as follows:

PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE

02012019SUP3