OGE ENERGY CORP.

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Entry into a Material Definitive Agreement

Submission of Matters to a Vote of Security Holders

Additional Information for Proxy Statement/ Votes

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G)

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G)

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Additional Information for Proxy Statement/ Votes

Other Events

Annual Report Scanned (Paper)

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Automatic Shelf Registration

Annual report pursuant to Section 13 or 15(d)

Results of Operations and Financial Condition

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Entry into a Material Definitive Agreement

Prospectus Supplement for Primary Offering

Prospectus Supplement for Primary Offering

Other Events

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Submission of Matters to a Vote of Security Holders

Additional Information for Proxy Statement/ Votes

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

Other Events

Annual Report Scanned (Paper)

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Preliminary Proxy Statement

Annual report pursuant to Section 13 or 15(d)

Results of Operations and Financial Condition

Entry into a Material Definitive Agreement

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Prospectus Supplement for Delayed or Continuous Offering

Additional Information for Proxy Statement/ Votes

Prospectus Supplement for Primary Offering

Free Writing Prospectus

Automatic Shelf Registration

General form for quarterly reports under Section 13 or 15(d)

Annual Report Scanned (Paper)

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Annual report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Automatic Shelf Registration

General form for quarterly reports under Section 13 or 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

General form for quarterly reports under Section 13 or 15(d)

Additional Information for Proxy Statement/ Votes

Shareholder Letter

Annual Report Scanned (Paper)

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Preliminary Proxy Statement

Annual report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

General form for quarterly reports under Section 13 or 15(d)

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Post Effective Amendment to S-8

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Additional Information for Proxy Statement/ Votes

General form for quarterly reports under Section 13 or 15(d)

Shareholder Letter

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Annual report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Correspondence with the SEC

Prospectus Supplement for Delayed or Continuous Offering

Prospectus Supplement for Primary Offering

Free Writing Prospectus

Letter from the SEC

Automatic Shelf Registration

Automatic Shelf Registration

Automatic Shelf Registration

Automatic Shelf Registration

Automatic Shelf Registration

Prospectus Supplement for Delayed or Continuous Offering

Free Writing Prospectus

Jones Donnie O.

Jones Donnie O.

Muncrief Richard E

RAINBOLT DAVID E

SULTEMEIER WILLIAM H

SULTEMEIER WILLIAM H

RAINBOLT DAVID E

BRIGGS SCOTT A

Stafford Sarah R.

Stafford Sarah R.

Ganske Lyle G.

WALWORTH CHARLES B

PARKER DAVID A

Jones Donnie O.

Stafford Sarah R.

SULTEMEIER WILLIAM H

Trauschke Sean