Form 8.3 - Rio Tinto plc

Macquarie Group Ltd

13 January 2026

 

FORM 8.3

PUBLIC OPENING POSITION DISCLOSURE/DEALING DISCLOSURE BY

A PERSON WITH INTERESTS IN RELEVANT SECURITIES REPRESENTING 1% OR MORE

Rule 8.3 of the Takeover Code (the "Code")

1.         KEY INFORMATION

(a) Full name of discloser:	Macquarie Group Limited
(b) Owner or controller of interests and short positions disclosed, if different from 1(a):      The naming of nominee or vehicle companies is insufficient.  For a trust, the trustee(s), settlor and beneficiaries must be named.	Macquarie Group Limited
(c) Name of offeror/offeree in relation to whose relevant securities this form relates:      Use a separate form for each offeror/offeree	Rio Tinto plc
(d) If an exempt fund manager connected with an offeror/offeree, state this and specify identity of offeror/offeree:	N/A
(e) Date position held/dealing undertaken:      For an opening position disclosure, state the latest practicable date prior to the disclosure	12th January 2026
(f)  In addition to the company in 1(c) above, is the discloser making disclosures in respect of any other party to the offer?      If it is a cash offer or possible cash offer, state "N/A"	Yes, Rio Tinto Limited

2.         POSITIONS OF THE PERSON MAKING THE DISCLOSURE

If there are positions or rights to subscribe to disclose in more than one class of relevant securities of the offeror or offeree named in 1(c), copy table 2(a) or (b) (as appropriate) for each additional class of relevant security.

(a)        Interests and short positions in the relevant securities of the offeror or offeree to which the disclosure relates following the dealing (if any)

Class of relevant security:	Rio Tinto plc 10p ordinary & Rio Tinto plc ADR
	Interests		Short positions
	Number	%	Number	%
(1) Relevant securities owned and/or controlled:	759,084	0.06	0	0
(2) Cash-settled derivatives:	0	0	552,754	0.04
(3) Stock-settled derivatives (including options) and agreements to purchase/sell:	0	0	0	0
TOTAL:	759,084	0.06	552,754	0.04

All interests and all short positions should be disclosed.

Details of any open stock-settled derivative positions (including traded options), or agreements to purchase or sell relevant securities, should be given on a Supplemental Form 8 (Open Positions).

(b)        Rights to subscribe for new securities (including directors' and other employee options)

Class of relevant security in relation to which subscription right exists:
Details, including nature of the rights concerned and relevant percentages:

3.         DEALINGS (IF ANY) BY THE PERSON MAKING THE DISCLOSURE

Where there have been dealings in more than one class of relevant securities of the offeror or offeree named in 1(c), copy table 3(a), (b), (c) or (d) (as appropriate) for each additional class of relevant security dealt in.

The currency of all prices and other monetary amounts should be stated.

(a)        Purchases and sales

Class of relevant security	Purchase/sale	Number of securities	Price per unit
Rio Tinto plc ADR	Sell	122	81.88 USD
Rio Tinto plc ADR	Sell	200	81.885 USD
Rio Tinto plc ADR	Sell	10	81.89 USD
Rio Tinto plc ADR	Sell	456	81.9 USD
Rio Tinto plc ADR	Sell	480	81.91 USD
Rio Tinto plc ADR	Sell	539	81.92 USD
Rio Tinto plc ADR	Sell	244	81.93 USD
Rio Tinto plc ADR	Sell	772	81.94 USD
Rio Tinto plc ADR	Sell	732	81.95 USD
Rio Tinto plc ADR	Sell	135	81.96 USD
Rio Tinto plc ADR	Sell	366	81.97 USD
Rio Tinto plc ADR	Sell	761	81.98 USD
Rio Tinto plc ADR	Sell	26	81.99 USD
Rio Tinto plc ADR	Sell	1,076	82 USD
Rio Tinto plc ADR	Sell	244	82.01 USD
Rio Tinto plc ADR	Sell	425	82.02 USD
Rio Tinto plc ADR	Sell	732	82.03 USD
Rio Tinto plc ADR	Sell	952	82.04 USD
Rio Tinto plc ADR	Sell	366	82.05 USD
Rio Tinto plc ADR	Sell	122	82.06 USD
Rio Tinto plc ADR	Sell	290	82.08 USD
Rio Tinto plc ADR	Sell	122	82.1 USD
Rio Tinto plc ADR	Sell	250	82.11 USD
Rio Tinto plc ADR	Sell	387	82.12 USD
Rio Tinto plc ADR	Sell	122	82.13 USD
Rio Tinto plc ADR	Sell	123	82.14 USD
Rio Tinto plc ADR	Sell	2,078	82.15 USD
Rio Tinto plc ADR	Sell	121	82.155 USD
Rio Tinto plc ADR	Sell	790	82.16 USD
Rio Tinto plc ADR	Sell	494	82.17 USD
Rio Tinto plc ADR	Sell	924	82.18 USD
Rio Tinto plc ADR	Sell	52	82.185 USD
Rio Tinto plc ADR	Sell	531	82.19 USD
Rio Tinto plc ADR	Sell	127	82.2 USD
Rio Tinto plc ADR	Sell	463	82.22 USD
Rio Tinto plc ADR	Sell	321	82.29 USD
Rio Tinto plc ADR	Sell	363	82.3 USD
Rio Tinto plc ADR	Sell	242	82.31 USD
Rio Tinto plc ADR	Sell	242	82.32 USD
Rio Tinto plc ADR	Sell	121	82.325 USD
Rio Tinto plc ADR	Sell	221	82.33 USD
Rio Tinto plc ADR	Sell	471	82.34 USD
Rio Tinto plc ADR	Sell	100	82.345 USD
Rio Tinto plc ADR	Sell	1	82.35 USD
Rio Tinto plc ADR	Sell	363	82.36 USD
Rio Tinto plc ADR	Sell	75	82.37 USD
Rio Tinto plc ADR	Sell	200	82.38 USD
Rio Tinto plc ADR	Sell	12	82.39 USD
Rio Tinto plc ADR	Sell	121	82.46 USD
Rio Tinto plc ADR	Sell	100	82.73 USD
Rio Tinto plc ADR	Sell	100	82.75 USD
Rio Tinto plc ADR	Sell	100	82.78 USD
Rio Tinto plc ADR	Sell	100	82.7805 USD
Rio Tinto plc ADR	Sell	200	82.79 USD
Rio Tinto plc ADR	Sell	200	82.8 USD
Rio Tinto plc ADR	Sell	200	82.805 USD
Rio Tinto plc ADR	Sell	100	82.815 USD
Rio Tinto plc ADR	Sell	2	82.8193 USD
Rio Tinto plc ADR	Sell	100	82.82 USD
Rio Tinto plc ADR	Sell	100	82.825 USD
Rio Tinto plc ADR	Sell	200	82.83 USD
Rio Tinto plc ADR	Sell	100	82.85 USD
Rio Tinto plc ADR	Sell	100	82.86 USD
Rio Tinto plc ADR	Sell	11	82.8704 USD
Rio Tinto plc ADR	Sell	19	82.8718 USD
Rio Tinto plc ADR	Sell	14	82.8807 USD
Rio Tinto plc ADR	Sell	10	82.8844 USD
Rio Tinto plc ADR	Sell	10	82.8867 USD
Rio Tinto plc ADR	Sell	10	82.887 USD
Rio Tinto plc ADR	Sell	314	82.89 USD
Rio Tinto plc ADR	Sell	100	82.895 USD
Rio Tinto plc ADR	Sell	204	82.9 USD
Rio Tinto plc ADR	Sell	1	82.9083 USD
Rio Tinto plc ADR	Sell	500	82.91 USD
Rio Tinto plc ADR	Sell	300	82.915 USD
Rio Tinto plc ADR	Sell	128	82.9187 USD
Rio Tinto plc ADR	Sell	400	82.92 USD
Rio Tinto plc ADR	Sell	300	82.925 USD
Rio Tinto plc ADR	Sell	300	82.93 USD
Rio Tinto plc ADR	Sell	100	82.935 USD
Rio Tinto plc ADR	Sell	400	82.94 USD
Rio Tinto plc ADR	Sell	100	82.941 USD
Rio Tinto plc ADR	Sell	81	82.9435 USD
Rio Tinto plc ADR	Sell	100	82.945 USD
Rio Tinto plc ADR	Sell	200	82.95 USD
Rio Tinto plc ADR	Sell	400	82.955 USD
Rio Tinto plc ADR	Sell	500	82.96 USD
Rio Tinto plc ADR	Sell	300	82.965 USD
Rio Tinto plc ADR	Sell	200	82.97 USD
Rio Tinto plc ADR	Sell	100	82.9705 USD
Rio Tinto plc ADR	Sell	400	82.975 USD
Rio Tinto plc ADR	Sell	1	82.9763 USD
Rio Tinto plc ADR	Sell	840	82.98 USD
Rio Tinto plc ADR	Sell	60	82.9815 USD
Rio Tinto plc ADR	Sell	100	82.983 USD
Rio Tinto plc ADR	Sell	400	82.985 USD
Rio Tinto plc ADR	Sell	94	82.9883 USD
Rio Tinto plc ADR	Sell	1,600	82.99 USD
Rio Tinto plc ADR	Sell	100	82.9905 USD
Rio Tinto plc ADR	Sell	200	82.991 USD
Rio Tinto plc ADR	Sell	200	82.995 USD
Rio Tinto plc ADR	Sell	18	82.9989 USD
Rio Tinto plc ADR	Sell	1,490	83 USD
Rio Tinto plc ADR	Sell	100	83.001 USD
Rio Tinto plc ADR	Sell	60	83.0015 USD
Rio Tinto plc ADR	Sell	700	83.005 USD
Rio Tinto plc ADR	Sell	144	83.0076 USD
Rio Tinto plc ADR	Sell	1,211	83.01 USD
Rio Tinto plc ADR	Sell	100	83.011 USD
Rio Tinto plc ADR	Sell	50	83.013 USD
Rio Tinto plc ADR	Sell	300	83.015 USD
Rio Tinto plc ADR	Sell	73	83.0158 USD
Rio Tinto plc ADR	Sell	81	83.0187 USD
Rio Tinto plc ADR	Sell	900	83.02 USD
Rio Tinto plc ADR	Sell	200	83.025 USD
Rio Tinto plc ADR	Sell	700	83.03 USD
Rio Tinto plc ADR	Sell	52	83.0315 USD
Rio Tinto plc ADR	Sell	100	83.033 USD
Rio Tinto plc ADR	Sell	400	83.035 USD
Rio Tinto plc ADR	Sell	202	83.0375 USD
Rio Tinto plc ADR	Sell	500	83.04 USD
Rio Tinto plc ADR	Sell	400	83.045 USD
Rio Tinto plc ADR	Sell	58	83.0453 USD
Rio Tinto plc ADR	Sell	600	83.05 USD
Rio Tinto plc ADR	Sell	100	83.055 USD
Rio Tinto plc ADR	Sell	700	83.06 USD
Rio Tinto plc ADR	Sell	134	83.0602 USD
Rio Tinto plc ADR	Sell	300	83.065 USD
Rio Tinto plc ADR	Sell	800	83.07 USD
Rio Tinto plc ADR	Sell	100	83.075 USD
Rio Tinto plc ADR	Sell	400	83.08 USD
Rio Tinto plc ADR	Sell	100	83.085 USD
Rio Tinto plc ADR	Sell	800	83.09 USD
Rio Tinto plc ADR	Sell	600	83.1 USD
Rio Tinto plc ADR	Sell	100	83.101 USD
Rio Tinto plc ADR	Sell	100	83.11 USD
Rio Tinto plc ADR	Sell	200	83.115 USD
Rio Tinto plc ADR	Sell	840	83.12 USD
Rio Tinto plc ADR	Sell	60	83.123 USD
Rio Tinto plc ADR	Sell	500	83.13 USD
Rio Tinto plc ADR	Sell	200	83.135 USD
Rio Tinto plc ADR	Sell	300	83.14 USD
Rio Tinto plc ADR	Sell	100	83.155 USD
Rio Tinto plc 10p ordinary	Purchase	33,690	59.453 GBP
Rio Tinto plc 10p ordinary	Purchase	121	60.58 GBP
Rio Tinto plc 10p ordinary	Purchase	244	60.59 GBP
Rio Tinto plc 10p ordinary	Purchase	309	60.6 GBP
Rio Tinto plc 10p ordinary	Purchase	577	60.61 GBP
Rio Tinto plc 10p ordinary	Purchase	539	60.62 GBP
Rio Tinto plc 10p ordinary	Purchase	214	60.625 GBP
Rio Tinto plc 10p ordinary	Purchase	467	60.63 GBP
Rio Tinto plc 10p ordinary	Purchase	244	60.635 GBP
Rio Tinto plc 10p ordinary	Purchase	919	60.64 GBP
Rio Tinto plc 10p ordinary	Purchase	92	60.645 GBP
Rio Tinto plc 10p ordinary	Purchase	123	60.65 GBP
Rio Tinto plc 10p ordinary	Purchase	734	60.66 GBP
Rio Tinto plc 10p ordinary	Purchase	231	60.67 GBP
Rio Tinto plc 10p ordinary	Purchase	11	60.675 GBP
Rio Tinto plc 10p ordinary	Purchase	1,181	60.68 GBP
Rio Tinto plc 10p ordinary	Purchase	162	60.69 GBP
Rio Tinto plc 10p ordinary	Purchase	786	60.7 GBP
Rio Tinto plc 10p ordinary	Purchase	353	60.705 GBP
Rio Tinto plc 10p ordinary	Purchase	843	60.71 GBP
Rio Tinto plc 10p ordinary	Purchase	122	60.715 GBP
Rio Tinto plc 10p ordinary	Purchase	651	60.72 GBP
Rio Tinto plc 10p ordinary	Purchase	542	60.73 GBP
Rio Tinto plc 10p ordinary	Purchase	2,091	60.735 GBP
Rio Tinto plc 10p ordinary	Purchase	954	60.74 GBP
Rio Tinto plc 10p ordinary	Purchase	121	60.745 GBP
Rio Tinto plc 10p ordinary	Purchase	391	60.75 GBP
Rio Tinto plc 10p ordinary	Purchase	526	60.755 GBP
Rio Tinto plc 10p ordinary	Purchase	978	60.76 GBP
Rio Tinto plc 10p ordinary	Purchase	323	60.77 GBP
Rio Tinto plc 10p ordinary	Purchase	442	60.775 GBP
Rio Tinto plc 10p ordinary	Purchase	100	60.78 GBP
Rio Tinto plc 10p ordinary	Purchase	122	60.79 GBP
Rio Tinto plc 10p ordinary	Purchase	100	60.8 GBP
Rio Tinto plc 10p ordinary	Purchase	77	60.82 GBP
Rio Tinto plc 10p ordinary	Purchase	321	60.825 GBP
Rio Tinto plc 10p ordinary	Purchase	286	60.83 GBP
Rio Tinto plc 10p ordinary	Purchase	150	60.835 GBP
Rio Tinto plc 10p ordinary	Purchase	476	60.84 GBP
Rio Tinto plc 10p ordinary	Purchase	514	60.85 GBP
Rio Tinto plc 10p ordinary	Purchase	98	60.855 GBP
Rio Tinto plc 10p ordinary	Purchase	181	60.86 GBP
Rio Tinto plc 10p ordinary	Purchase	121	60.87 GBP
Rio Tinto plc 10p ordinary	Purchase	100	60.875 GBP
Rio Tinto plc 10p ordinary	Purchase	308	60.88 GBP
Rio Tinto plc 10p ordinary	Purchase	121	60.89 GBP
Rio Tinto plc 10p ordinary	Purchase	121	60.925 GBP
Rio Tinto plc 10p ordinary	Sell	10,840	60.235767 GBP
Rio Tinto plc 10p ordinary	Sell	23,200	60.391053 GBP

(b)        Cash-settled derivative transactions

Class of relevant security	Product description e.g. CFD	Nature of dealing e.g. opening/closing a long/short position, increasing/reducing a long/short position	Number of reference securities	Price per unit
Rio Tinto plc 10p ordinary	Equity Swap	Opening/Increasing Long Position	10,840	60.23576716 GBP

(c)        Stock-settled derivative transactions (including options)

(i)         Writing, selling, purchasing or varying

Class of relevant security	Product description e.g. call option	Writing, purchasing, selling, varying etc.	Number of securities to which option relates	Exercise price per unit	Type e.g. American, European etc.	Expiry date	Option money paid/ received per unit

(ii)        Exercise

Class of relevant security	Product description e.g. call option	Exercising/ exercised against	Number of securities	Exercise price per unit

(d)        Other dealings (including subscribing for new securities)

Class of relevant security	Nature of dealing e.g. subscription, conversion	Details	Price per unit (if applicable)

4.         OTHER INFORMATION

(a)        Indemnity and other dealing arrangements

Details of any indemnity or option arrangement, or any agreement or understanding, formal or informal, relating to relevant securities which may be an inducement to deal or refrain from dealing entered into by the person making the disclosure and any party to the offer or any person acting in concert with a party to the offer: Irrevocable commitments and letters of intent should not be included.  If there are no such agreements, arrangements or understandings, state "none"

(b)        Agreements, arrangements or understandings relating to options or derivatives

Details of any agreement, arrangement or understanding, formal or informal, between the person making the disclosure and any other person relating to: (i)  the voting rights of any relevant securities under any option; or (ii) the voting rights or future acquisition or disposal of any relevant securities to which any derivative is referenced: If there are no such agreements, arrangements or understandings, state "none"

(c)        Attachments

Is a Supplemental Form 8 (Open Positions) attached?

NO

Date of disclosure:	13th January 2026
Contact name:	Stephanie Kannimmel
Telephone number*:	[phone]

Public disclosures under Rule 8 of the Code must be made to a Regulatory Information Service.

The Panel's Market Surveillance Unit is available for consultation in relation to the Code's disclosure requirements on [phone].

*If the discloser is a natural person, a telephone number does not need to be included, provided contact information has been provided to the Panel's Market Surveillance Unit.

The Code can be viewed on the Panel's website at www.thetakeoverpanel.org.uk.

 

END