UNITED STATES

SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER
PURSUANT TO RULE 13A-16 OR 15D-16 OF
THE SECURITIES EXCHANGE ACT OF 1934

 March 25, 2020


Commission file number: 001-10533Commission file number: 001-34121


Rio Tinto plcRio Tinto Limited

ABN 96 004 458 404
(Translation of registrant’s name into English)(Translation of registrant’s name into English)


6 St. James’s SquareLevel 7, 360 Collins Street
London, SW1Y 4AD, United Kingdom
Melbourne, Victoria 3000, Australia
(Address of principal executive offices)(Address of principal executive offices)


Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

Form 20-F ☒ Form 40-F ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ☐

Indicate by check mark whether by furnishing the information contained in this Form, the registrant is also thereby furnishing the information to the Commission pursuant to
Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes ☐ No ☒

If "Yes" is marked, indicate below the file number assigned to the registrant in connection
with Rule 12g3-2(b): 82- ________




EXHIBIT 99

1.Stock Exchange announcement dated 25 March 2020 entitled ‘Addendum to Rio Tinto Limited notice of meeting'





SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrants have duly caused this report to be signed on their behalf by the undersigned, thereunto duly authorised.

Rio Tinto plcRio Tinto Limited
(Registrant)(Registrant)




By/s/ Steve AllenBy/s/ Steve Allen
NameSteve AllenNameSteve Allen
TitleCompany SecretaryTitleJoint Company Secretary




Date25 March 2020Date25 March 2020


ex991_20200325
Notice to ASX Addendum to Rio Tinto Limited notice of meeting 25 March 2020 Rio Tinto Limited has today issued an addendum to its 2020 notice of annual general meeting. The addendum will be available at riotinto.com/invest/shareholder-information/annual-general-meetings and will be released to the ASX. The addendum sets out the shareholder requisitioned resolutions and supporting statements received by the company as announced on 4 March 2020, and the board’s response and voting recommendation with respect to those resolutions. The addendum also provides an update on the arrangements for the Rio Tinto Limited’s annual general meeting to be held on 7 May 2020. Consistent with the Australian Government’s recently announced limitations on large gatherings as a result of the impact of the COVID-19 virus in Australia, shareholders are strongly encouraged not to attend this year’s annual general meeting in person. Rio Tinto Limited is investigating possible arrangements for shareholders to participate in its annual general meeting remotely, including holding it as a “hybrid” meeting. Shareholders will be updated as soon as practicable on these arrangements at riotinto.com/invest/shareholder-information/annual-general-meetings. Page 1 of 2


 
Contacts media.enquiries@riotinto.com riotinto.com Follow @RioTinto on Twitter Media Relations, United Kingdom Media Relations, Australia Illtud Harri Jonathan Rose M +44 7920 503 600 T +61 3 9283 3088 M +61 447 028 913 David Outhwaite T +44 20 7781 1623 Matt Chambers M +44 7787 597 493 T +61 3 9283 3087 M +61 433 525 739 Media Relations, Americas Matthew Klar Jesse Riseborough T +1 514 608 4429 T +61 8 6211 6013 M +61 436 653 412 Media Relations, Asia Grant Donald T +65 6679 9290 M +65 9722 6028 Investor Relations, United Kingdom Investor Relations, Australia Menno Sanderse Natalie Worley T: +44 20 7781 1517 T +61 3 9283 3063 M: +44 7825 195 178 M +61 409 210 462 David Ovington Amar Jambaa T +44 20 7781 2051 T +61 3 9283 3627 M +44 7920 010 978 M +61 472 865 948 Group Company Secretary Joint Company Secretary Steve Allen Tim Paine Rio Tinto plc Rio Tinto Limited 6 St James’s Square Level 7, 360 Collins Street London SW1Y 4AD Melbourne 3000 United Kingdom Australia T +44 20 7781 2000 T +61 3 9283 3333 Registered in England Registered in Australia No. 719885 ABN 96 004 458 404 This announcement is authorised for release to the market by Rio Tinto’s Group Company Secretary. Page 2 of 2