Form 8.3 RIO TINTO PLC AND RIO TINTO LIMITED

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:

Barclays PLC.

(b)

Owner or controller of interest and short positions disclosed, if different from 1(a):

(c)

Name of offeror/offeree in relation to whose relevant securities this form relates:

RIO TINTO PLC AND RIO TINTO LIMITED

(d)

If an exempt fund manager connected with an offeror/offeree, state this and specify identity of offeror/offeree:

(e)

Date position held/dealing undertaken:

20 Jan 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?

YES: GLENCORE PLC

2.

POSITIONS OF THE PERSON MAKING THE DISCLOSURE

(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

Interests

Short Positions

Number

(%)

Number

(%)

(1) Relevant securities owned and/or controlled:

9,071,087

0.72%

8,129,232

0.64%

(2) Cash-settled derivatives:

3,665,971

0.29%

4,634,097

0.36%

(3) Stock-settled derivatives (including options) and agreements to purchase/sell: 

31,000

0.00%

1,112,199

0.08%

TOTAL: 

12,768,058

1.01%

13,875,528

1.08%

Class of relevant security:

Rio Tinto Limited ordinary

Interests

Short Positions

Number

(%)

Number

(%)

(1) Relevant securities owned and/or controlled:

924,165

0.25%

1,081,610

0.29%

(2) Cash-settled derivatives:

1,054,331

0.28%

807,736

0.22%

(3) Stock-settled derivatives (including options) and agreements to purchase/sell: 

0

0.00%

0

0.00%

TOTAL: 

1,978,496

0.53%

1,889,346

0.51%

(b)

Rights to subscribe for new securities (including directors and other executive 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

(a)

Purchase and sales

Class of relevant security

Purchase/sale

Number of securities

Price per unit

Rio Tinto Limited ordinary

Purchase

7,696

146.8008 AUD

Rio Tinto Limited ordinary

Purchase

5,965

146.3692 AUD

Rio Tinto Limited ordinary

Purchase

2,120

148.4145 AUD

Rio Tinto Limited ordinary

Purchase

152

147.4413 AUD

Rio Tinto Limited ordinary

Purchase

95

147.2653 AUD

Rio Tinto plc 10p ordinary

Purchase

258,119

63.1402 GBP

Rio Tinto plc 10p ordinary

Purchase

97,970

63.0456 GBP

Rio Tinto plc 10p ordinary

Purchase

49,833

62.8874 GBP

Rio Tinto plc 10p ordinary

Purchase

29,642

62.9777 GBP

Rio Tinto plc 10p ordinary

Purchase

26,860

62.9344 GBP

Rio Tinto plc 10p ordinary

Purchase

25,336

63.1425 GBP

Rio Tinto plc 10p ordinary

Purchase

20,980

63.1400 GBP

Rio Tinto plc 10p ordinary

Purchase

15,862

62.7934 GBP

Rio Tinto plc 10p ordinary

Purchase

14,890

62.9592 GBP

Rio Tinto plc 10p ordinary

Purchase

12,510

62.8928 GBP

Rio Tinto plc 10p ordinary

Purchase

11,658

62.8880 GBP

Rio Tinto plc 10p ordinary

Purchase

10,692

63.1382 GBP

Rio Tinto plc 10p ordinary

Purchase

10,020

62.5800 GBP

Rio Tinto plc 10p ordinary

Purchase

9,695

62.9899 GBP

Rio Tinto plc 10p ordinary

Purchase

8,942

63.0441 GBP

Rio Tinto plc 10p ordinary

Purchase

8,013

62.9178 GBP

Rio Tinto plc 10p ordinary

Purchase

6,288

62.7461 GBP

Rio Tinto plc 10p ordinary

Purchase

5,261

62.9416 GBP

Rio Tinto plc 10p ordinary

Purchase

4,896

72.1716 EUR

Rio Tinto plc 10p ordinary

Purchase

4,376

62.9761 GBP

Rio Tinto plc 10p ordinary

Purchase

4,368

62.7713 GBP

Rio Tinto plc 10p ordinary

Purchase

3,730

62.5160 GBP

Rio Tinto plc 10p ordinary

Purchase

3,696

63.1273 GBP

Rio Tinto plc 10p ordinary

Purchase

3,141

62.9556 GBP

Rio Tinto plc 10p ordinary

Purchase

3,006

62.9892 GBP

Rio Tinto plc 10p ordinary

Purchase

2,045

63.0807 GBP

Rio Tinto plc 10p ordinary

Purchase

2,034

62.9310 GBP

Rio Tinto plc 10p ordinary

Purchase

1,935

63.1304 GBP

Rio Tinto plc 10p ordinary

Purchase

1,620

62.5657 GBP

Rio Tinto plc 10p ordinary

Purchase

1,605

62.9584 GBP

Rio Tinto plc 10p ordinary

Purchase

1,564

62.9894 GBP

Rio Tinto plc 10p ordinary

Purchase

1,546

62.7995 GBP

Rio Tinto plc 10p ordinary

Purchase

1,529

62.6133 GBP

Rio Tinto plc 10p ordinary

Purchase

1,464

62.7768 GBP

Rio Tinto plc 10p ordinary

Purchase

1,440

62.9729 GBP

Rio Tinto plc 10p ordinary

Purchase

1,438

62.8794 GBP

Rio Tinto plc 10p ordinary

Purchase

1,415

63.1431 GBP

Rio Tinto plc 10p ordinary

Purchase

1,145

62.7638 GBP

ADR

Purchase

1,122

85.6800 USD

Rio Tinto plc 10p ordinary

Purchase

1,003

62.8680 GBP

Rio Tinto plc 10p ordinary

Purchase

949

63.1526 GBP

Rio Tinto plc 10p ordinary

Purchase

855

63.0561 GBP

Rio Tinto plc 10p ordinary

Purchase

776

62.5400 GBP

Rio Tinto plc 10p ordinary

Purchase

773

62.8464 GBP

Rio Tinto plc 10p ordinary

Purchase

738

63.0926 GBP

Rio Tinto plc 10p ordinary

Purchase

725

62.9103 GBP

Rio Tinto plc 10p ordinary

Purchase

705

62.8172 GBP

Rio Tinto plc 10p ordinary

Purchase

678

63.0600 GBP

Rio Tinto plc 10p ordinary

Purchase

668

62.9655 GBP

Rio Tinto plc 10p ordinary

Purchase

663

63.0626 GBP

Rio Tinto plc 10p ordinary

Purchase

579

72.1953 EUR

Rio Tinto plc 10p ordinary

Purchase

564

62.5790 GBP

Rio Tinto plc 10p ordinary

Purchase

552

62.7060 GBP

Rio Tinto plc 10p ordinary

Purchase

552

62.7800 GBP

Rio Tinto plc 10p ordinary

Purchase

531

62.6833 GBP

Rio Tinto plc 10p ordinary

Purchase

508

62.8700 GBP

Rio Tinto plc 10p ordinary

Purchase

503

62.7200 GBP

Rio Tinto plc 10p ordinary

Purchase

432

62.7500 GBP

Rio Tinto plc 10p ordinary

Purchase

419

62.8963 GBP

Rio Tinto plc 10p ordinary

Purchase

413

62.8451 GBP

Rio Tinto plc 10p ordinary

Purchase

383

62.7663 GBP

Rio Tinto plc 10p ordinary

Purchase

371

62.8681 GBP

Rio Tinto plc 10p ordinary

Purchase

341

72.0200 EUR

Rio Tinto plc 10p ordinary

Purchase

329

62.7895 GBP

Rio Tinto plc 10p ordinary

Purchase

317

62.7700 GBP

Rio Tinto plc 10p ordinary

Purchase

312

62.9257 GBP

Rio Tinto plc 10p ordinary

Purchase

309

63.0463 GBP

Rio Tinto plc 10p ordinary

Purchase

284

62.9975 GBP

Rio Tinto plc 10p ordinary

Purchase

280

63.0800 GBP

Rio Tinto plc 10p ordinary

Purchase

278

63.0900 GBP

Rio Tinto plc 10p ordinary

Purchase

263

62.6704 GBP

Rio Tinto plc 10p ordinary

Purchase

260

62.7400 GBP

Rio Tinto plc 10p ordinary

Purchase

250

62.5250 GBP

Rio Tinto plc 10p ordinary

Purchase

244

62.7987 GBP

Rio Tinto plc 10p ordinary

Purchase

225

63.0586 GBP

Rio Tinto plc 10p ordinary

Purchase

222

63.0650 GBP

Rio Tinto plc 10p ordinary

Purchase

214

63.0663 GBP

Rio Tinto plc 10p ordinary

Purchase

197

63.0306 GBP

Rio Tinto plc 10p ordinary

Purchase

196

63.0700 GBP

Rio Tinto plc 10p ordinary

Purchase

190

62.8500 GBP

Rio Tinto plc 10p ordinary

Purchase

177

63.0727 GBP

Rio Tinto plc 10p ordinary

Purchase

146

62.8000 GBP

Rio Tinto plc 10p ordinary

Purchase

145

62.8600 GBP

Rio Tinto plc 10p ordinary

Purchase

144

63.0628 GBP

Rio Tinto plc 10p ordinary

Purchase

140

63.0525 GBP

Rio Tinto plc 10p ordinary

Purchase

136

62.7850 GBP

Rio Tinto plc 10p ordinary

Purchase

125

63.0100 GBP

Rio Tinto plc 10p ordinary

Purchase

111

62.6653 GBP

Rio Tinto plc 10p ordinary

Purchase

111

62.9516 GBP

Rio Tinto plc 10p ordinary

Purchase

111

62.8100 GBP

Rio Tinto plc 10p ordinary

Purchase

106

63.0960 GBP

Rio Tinto plc 10p ordinary

Purchase

102

62.7950 GBP

Rio Tinto plc 10p ordinary

Purchase

100

62.9050 GBP

Rio Tinto plc 10p ordinary

Purchase

87

62.9200 GBP

Rio Tinto plc 10p ordinary

Purchase

87

63.0593 GBP

Rio Tinto plc 10p ordinary

Purchase

76

63.0492 GBP

Rio Tinto plc 10p ordinary

Purchase

75

63.0450 GBP

Rio Tinto plc 10p ordinary

Purchase

75

62.8780 GBP

Rio Tinto plc 10p ordinary

Purchase

70

63.0500 GBP

Rio Tinto plc 10p ordinary

Purchase

64

63.0950 GBP

Rio Tinto plc 10p ordinary

Purchase

60

63.0300 GBP

Rio Tinto plc 10p ordinary

Purchase

56

62.6250 GBP

Rio Tinto plc 10p ordinary

Purchase

46

62.6000 GBP

Rio Tinto plc 10p ordinary

Purchase

45

62.9013 GBP

Rio Tinto plc 10p ordinary

Purchase

43

63.0400 GBP

Rio Tinto plc 10p ordinary

Purchase

42

62.8294 GBP

Rio Tinto plc 10p ordinary

Purchase

42

72.4900 EUR

Rio Tinto plc 10p ordinary

Purchase

39

63.1236 GBP

Rio Tinto plc 10p ordinary

Purchase

35

62.8081 GBP

Rio Tinto plc 10p ordinary

Purchase

33

62.8350 GBP

Rio Tinto plc 10p ordinary

Purchase

28

62.9161 GBP

Rio Tinto plc 10p ordinary

Purchase

27

62.5700 GBP

Rio Tinto plc 10p ordinary

Purchase

26

62.7600 GBP

Rio Tinto plc 10p ordinary

Purchase

25

62.8190 GBP

Rio Tinto plc 10p ordinary

Purchase

25

63.1000 GBP

Rio Tinto plc 10p ordinary

Purchase

18

62.5600 GBP

Rio Tinto plc 10p ordinary

Purchase

11

62.8200 GBP

Rio Tinto plc 10p ordinary

Purchase

7

62.4987 GBP

Rio Tinto plc 10p ordinary

Purchase

6

62.8300 GBP

Rio Tinto Limited ordinary

Sale

7,696

146.8008 AUD

Rio Tinto Limited ordinary

Sale

828

146.4182 AUD

Rio Tinto Limited ordinary

Sale

376

149.2527 AUD

Rio Tinto Limited ordinary

Sale

334

147.1458 AUD

Rio Tinto Limited ordinary

Sale

166

147.1386 AUD

Rio Tinto Limited ordinary

Sale

9

146.3297 AUD

Rio Tinto plc 10p ordinary

Sale

59,875

62.4217 GBP

Rio Tinto plc 10p ordinary

Sale

58,997

62.9713 GBP

Rio Tinto plc 10p ordinary

Sale

52,830

62.9700 GBP

Rio Tinto plc 10p ordinary

Sale

48,145

63.1400 GBP

Rio Tinto plc 10p ordinary

Sale

43,300

62.5800 GBP

Rio Tinto plc 10p ordinary

Sale

25,115

63.0019 GBP

Rio Tinto plc 10p ordinary

Sale

17,107

62.5409 GBP

Rio Tinto plc 10p ordinary

Sale

12,884

62.7257 GBP

Rio Tinto plc 10p ordinary

Sale

11,863

62.8081 GBP

Rio Tinto plc 10p ordinary

Sale

10,887

63.0100 GBP

Rio Tinto plc 10p ordinary

Sale

7,576

62.7970 GBP

Rio Tinto plc 10p ordinary

Sale

7,234

62.9107 GBP

Rio Tinto plc 10p ordinary

Sale

6,685

63.0454 GBP

Rio Tinto plc 10p ordinary

Sale

6,442

62.9649 GBP

Rio Tinto plc 10p ordinary

Sale

6,386

62.9987 GBP

ADR

Sale

6,001

85.6800 USD

Rio Tinto plc 10p ordinary

Sale

5,828

62.8824 GBP

Rio Tinto plc 10p ordinary

Sale

5,815

63.0856 GBP

Rio Tinto plc 10p ordinary

Sale

3,941

62.9627 GBP

Rio Tinto plc 10p ordinary

Sale

3,885

62.8730 GBP

Rio Tinto plc 10p ordinary

Sale

3,021

62.6237 GBP

Rio Tinto plc 10p ordinary

Sale

2,946

62.9743 GBP

Rio Tinto plc 10p ordinary

Sale

2,450

62.7927 GBP

Rio Tinto plc 10p ordinary

Sale

2,344

62.7684 GBP

Rio Tinto plc 10p ordinary

Sale

2,340

62.8943 GBP

Rio Tinto plc 10p ordinary

Sale

2,263

62.6292 GBP

Rio Tinto plc 10p ordinary

Sale

1,958

62.8107 GBP

Rio Tinto plc 10p ordinary

Sale

1,878

62.8286 GBP

ADR

Sale

1,800

84.8100 USD

Rio Tinto plc 10p ordinary

Sale

1,750

62.9547 GBP

Rio Tinto plc 10p ordinary

Sale

1,589

62.6402 GBP

Rio Tinto plc 10p ordinary

Sale

1,528

62.7957 GBP

Rio Tinto plc 10p ordinary

Sale

1,522

62.9148 GBP

Rio Tinto plc 10p ordinary

Sale

1,396

62.8587 GBP

Rio Tinto plc 10p ordinary

Sale

1,323

62.9322 GBP

Rio Tinto plc 10p ordinary

Sale

1,271

62.5625 GBP

Rio Tinto plc 10p ordinary

Sale

1,242

63.0899 GBP

Rio Tinto plc 10p ordinary

Sale

1,201

72.5536 EUR

Rio Tinto plc 10p ordinary

Sale

1,128

62.7882 GBP

Rio Tinto plc 10p ordinary

Sale

1,101

62.8779 GBP

Rio Tinto plc 10p ordinary

Sale

1,086

62.9329 GBP

Rio Tinto plc 10p ordinary

Sale

1,078

62.7902 GBP

Rio Tinto plc 10p ordinary

Sale

959

63.0500 GBP

Rio Tinto plc 10p ordinary

Sale

931

62.8315 GBP

Rio Tinto plc 10p ordinary

Sale

929

63.0406 GBP

ADR

Sale

900

84.7800 USD

Rio Tinto plc 10p ordinary

Sale

830

62.8800 GBP

Rio Tinto plc 10p ordinary

Sale

826

63.0993 GBP

Rio Tinto plc 10p ordinary

Sale

809

63.0600 GBP

Rio Tinto plc 10p ordinary

Sale

651

62.8830 GBP

Rio Tinto plc 10p ordinary

Sale

590

62.8897 GBP

Rio Tinto plc 10p ordinary

Sale

566

62.8467 GBP

ADR

Sale

544

84.8000 USD

Rio Tinto plc 10p ordinary

Sale

522

62.8850 GBP

Rio Tinto plc 10p ordinary

Sale

488

72.3140 EUR

Rio Tinto plc 10p ordinary

Sale

468

62.8595 GBP

Rio Tinto plc 10p ordinary

Sale

435

62.7200 GBP

Rio Tinto plc 10p ordinary

Sale

413

62.9174 GBP

Rio Tinto plc 10p ordinary

Sale

402

62.7083 GBP

Rio Tinto plc 10p ordinary

Sale

398

62.8929 GBP

Rio Tinto plc 10p ordinary

Sale

383

62.6966 GBP

Rio Tinto plc 10p ordinary

Sale

378

63.0473 GBP

Rio Tinto plc 10p ordinary

Sale

341

72.0210 EUR

Rio Tinto plc 10p ordinary

Sale

326

62.7656 GBP

Rio Tinto plc 10p ordinary

Sale

307

63.0433 GBP

ADR

Sale

300

85.6850 USD

Rio Tinto plc 10p ordinary

Sale

278

63.0900 GBP

Rio Tinto plc 10p ordinary

Sale

273

62.6612 GBP

Rio Tinto plc 10p ordinary

Sale

264

62.7800 GBP

Rio Tinto plc 10p ordinary

Sale

261

62.9688 GBP

Rio Tinto plc 10p ordinary

Sale

257

62.6587 GBP

Rio Tinto plc 10p ordinary

Sale

247

63.0628 GBP

Rio Tinto plc 10p ordinary

Sale

241

62.8905 GBP

Rio Tinto plc 10p ordinary

Sale

241

63.0181 GBP

Rio Tinto plc 10p ordinary

Sale

233

63.0850 GBP

Rio Tinto plc 10p ordinary

Sale

218

62.7700 GBP

Rio Tinto plc 10p ordinary

Sale

200

62.5464 GBP

Rio Tinto plc 10p ordinary

Sale

199

62.7646 GBP

Rio Tinto plc 10p ordinary

Sale

193

62.8700 GBP

Rio Tinto plc 10p ordinary

Sale

193

62.8321 GBP

Rio Tinto plc 10p ordinary

Sale

191

62.7521 GBP

Rio Tinto plc 10p ordinary

Sale

190

62.8500 GBP

Rio Tinto plc 10p ordinary

Sale

189

62.6923 GBP

Rio Tinto plc 10p ordinary

Sale

182

63.1348 GBP

ADR

Sale

180

84.7700 USD

Rio Tinto plc 10p ordinary

Sale

179

63.0743 GBP

Rio Tinto plc 10p ordinary

Sale

132

62.8600 GBP

Rio Tinto plc 10p ordinary

Sale

132

62.8554 GBP

Rio Tinto plc 10p ordinary

Sale

130

63.0650 GBP

Rio Tinto plc 10p ordinary

Sale

127

62.5300 GBP

ADR

Sale

120

84.7900 USD

Rio Tinto plc 10p ordinary

Sale

114

63.0400 GBP

Rio Tinto plc 10p ordinary

Sale

112

63.0800 GBP

Rio Tinto plc 10p ordinary

Sale

111

62.8100 GBP

Rio Tinto plc 10p ordinary

Sale

102

62.7950 GBP

ADR

Sale

100

85.6550 USD

ADR

Sale

100

85.6500 USD

Rio Tinto plc 10p ordinary

Sale

100

62.9050 GBP

ADR

Sale

100

85.7100 USD

Rio Tinto plc 10p ordinary

Sale

84

72.4900 EUR

Rio Tinto plc 10p ordinary

Sale

75

62.7761 GBP

Rio Tinto plc 10p ordinary

Sale

73

62.9435 GBP

Rio Tinto plc 10p ordinary

Sale

71

62.5900 GBP

ADR

Sale

70

85.6700 USD

Rio Tinto plc 10p ordinary

Sale

68

63.0150 GBP

Rio Tinto plc 10p ordinary

Sale

64

63.0950 GBP

Rio Tinto plc 10p ordinary

Sale

63

63.0700 GBP

Rio Tinto plc 10p ordinary

Sale

60

63.0300 GBP

Rio Tinto plc 10p ordinary

Sale

60

62.8400 GBP

Rio Tinto plc 10p ordinary

Sale

60

62.7400 GBP

Rio Tinto plc 10p ordinary

Sale

59

63.0200 GBP

ADR

Sale

56

84.7910 USD

Rio Tinto plc 10p ordinary

Sale

56

62.6250 GBP

Rio Tinto plc 10p ordinary

Sale

54

62.6000 GBP

Rio Tinto plc 10p ordinary

Sale

50

62.8000 GBP

Rio Tinto plc 10p ordinary

Sale

45

62.8986 GBP

Rio Tinto plc 10p ordinary

Sale

35

62.8144 GBP

Rio Tinto plc 10p ordinary

Sale

34

62.5400 GBP

Rio Tinto plc 10p ordinary

Sale

33

62.8412 GBP

Rio Tinto plc 10p ordinary

Sale

31

62.9496 GBP

ADR

Sale

27

84.6900 USD

Rio Tinto plc 10p ordinary

Sale

27

62.5700 GBP

Rio Tinto plc 10p ordinary

Sale

25

62.8252 GBP

Rio Tinto plc 10p ordinary

Sale

25

63.1000 GBP

Rio Tinto plc 10p ordinary

Sale

20

62.7600 GBP

Rio Tinto plc 10p ordinary

Sale

18

62.5600 GBP

Rio Tinto plc 10p ordinary

Sale

13

62.9769 GBP

Rio Tinto plc 10p ordinary

Sale

13

62.5353 GBP

Rio Tinto plc 10p ordinary

Sale

11

62.8200 GBP

Rio Tinto plc 10p ordinary

Sale

7

62.5050 GBP

Rio Tinto plc 10p ordinary

Sale

6

62.8362 GBP

Rio Tinto plc 10p ordinary

Sale

5

63.1340 GBP

ADR

Sale

4

84.8900 USD

ADR

Sale

4

84.6600 USD

(b)

Cash-settled derivative transactions

Class of relevant security

Product description

Nature of dealing

Number of reference securities

Price per unit

Rio Tinto Limited ordinary

SWAP

Decreasing Short

334

147.1458 AUD

Rio Tinto Limited ordinary

SWAP

Decreasing Short

376

149.2527 AUD

Rio Tinto Limited ordinary

SWAP

Increasing Short

5,965

146.3692 AUD

Rio Tinto Limited ordinary

SWAP

Increasing Short

95

147.2652 AUD

Rio Tinto Limited ordinary

SWAP

Increasing Short

2,120

148.4293 AUD

Rio Tinto Limited ordinary

CFD

Increasing Long

9,407

146.7435 AUD

Rio Tinto Limited ordinary

CFD

Decreasing Long

5,698

146.8743 AUD

Rio Tinto plc 10p ordinary

SWAP

Decreasing Short

12,077

62.8760 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Short

14,800

62.9641 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Short

309

63.0462 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

13

62.5353 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

43,300

62.5800 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

2,263

62.6292 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

12,884

62.7257 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

326

62.7656 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

1,078

62.7902 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

11,863

62.8081 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

1,958

62.8107 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

1,396

62.8587 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

468

62.8595 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

265

62.8721 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

727

62.8810 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

2,340

62.8943 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

45

62.8987 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

1,086

62.9329 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

31

62.9499 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

1,750

62.9547 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

3,941

62.9627 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

6,442

62.9649 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

261

62.9687 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

58,997

62.9713 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

2,946

62.9743 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

10

62.9773 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

3

62.9774 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

3,898

63.0393 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

929

63.0406 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

6,685

63.0454 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

8,475

63.1180 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

182

63.1348 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

5

63.1349 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

33,652

63.1400 GBP

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

1,201

72.5536 EUR

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

3,730

62.5160 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

10,020

62.5800 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

263

62.6704 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

531

62.6833 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

6,288

62.7461 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

4,368

62.7713 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

136

62.7850 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

5,357

62.7878 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

300

62.7933 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

24,396

62.8218 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

413

62.8451 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

1,590

62.8466 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

1,003

62.8680 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

371

62.8681 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

49,833

62.8874 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

11,658

62.8880 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

7

62.8914 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

12,503

62.8927 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

45

62.9012 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

28

62.9161 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

8,013

62.9178 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

5,261

62.9416 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

111

62.9516 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

3,141

62.9556 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

14,890

62.9592 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

1,440

62.9729 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

29,642

62.9777 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

1,564

62.9894 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

16,287

62.9918 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

17,111

62.9919 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

197

63.0306 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

214

63.0663 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

2,433

63.1291 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

1,935

63.1304 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

59,011

63.1326 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

10,692

63.1382 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

151

63.1400 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

258,119

63.1402 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

25,336

63.1425 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

1,415

63.1431 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

949

63.1526 GBP

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

53

63.1526 USD

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

4,896

72.1716 EUR

Rio Tinto plc 10p ordinary

SWAP

Decreasing Long

49

72.5100 EUR

Rio Tinto plc 10p ordinary

SWAP

Increasing Short

88

63.0606 GBP

Rio Tinto plc 10p ordinary

CFD

Decreasing Short

7,617

62.6825 GBP

Rio Tinto plc 10p ordinary

CFD

Decreasing Short

20,960

62.7592 GBP

Rio Tinto plc 10p ordinary

CFD

Decreasing Short

10,647

62.9756 GBP

Rio Tinto plc 10p ordinary

CFD

Decreasing Short

25,115

63.0018 GBP

Rio Tinto plc 10p ordinary

CFD

Decreasing Short

4,983

63.1349 GBP

Rio Tinto plc 10p ordinary

CFD

Decreasing Short

88

72.1902 EUR

Rio Tinto plc 10p ordinary

CFD

Decreasing Short

400

72.3320 EUR

Rio Tinto plc 10p ordinary

CFD

Decreasing Short

42

72.4900 EUR

Rio Tinto plc 10p ordinary

CFD

Increasing Short

15,312

62.9807 GBP

Rio Tinto plc 10p ordinary

CFD

Increasing Short

17,145

62.9835 GBP

Rio Tinto plc 10p ordinary

CFD

Increasing Short

183

63.1400 GBP

Rio Tinto plc 10p ordinary

CFD

Increasing Short

582

63.1444 GBP

Rio Tinto plc 10p ordinary

CFD

Increasing Short

486

72.1457 EUR

Rio Tinto plc 10p ordinary

CFD

Increasing Short

44

72.4865 EUR

Rio Tinto plc 10p ordinary

SWAP

Increasing Long

3,631

84.7920 USD

(c)

Stock-settled derivative transactions (including options)

(i)

Writing, selling, purchasing or varying

Class of relevant security

Product description

Writing, purchasing, selling, varying etc

Number of securities to which option relates

Exercise price per unit

Type

Expiry date

Option money paid/ received per unit

(ii)

Exercise

Class of relevant security

Product description

Exercising/ exercised against

Number of securities

Exercise price per unit

(d)

Other dealings (including subscribing for new securities)

Class of relevant security

Nature of Dealings

Details

Price per unit (if applicable)

4.

OTHER INFORMATION

(a)

Indemnity and other dealings 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:

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 of future acquisition or disposal of any relevant securities to which any derivative is referenced:

NONE

(c)

Attachments

Is a Supplemental Form 8 (Open Positions) attached?

YES

Date of disclosure:

21 Jan 2026

Contact name:

Large Holdings Regulatory Operations

Telephone number:

020 3134 7213

SUPPLEMENTAL FORM 8 (OPEN POSITIONS)

DETAILS OF OPEN OPTION AND DERIVATIVE POSITIONS, AGREEMENTS TO

PURCHASE OR SELL ETC.

Note 5(i) on Rule 8 of the Takeover Code (the "Code")

1. KEY INFORMATION

Identity of the person whose positions/dealings are being disclosed:

Barclays PLC.

Name of offeror/offeree in relation to whose relevant securities this from relates:

RIO TINTO PLC AND RIO TINTO LIMITED

2. OPTIONS AND DERIVATIVES

Class of relevant security

Product description

Writing, purchasing, selling, varying etc

Number of securities to which option relates

Exercise price per unit

Type

Expiry date

Rio Tinto plc ADR

Put Options

Purchased

-500

63

American

15-Jan-27

Rio Tinto plc ADR

Put Options

Purchased

-400

60

American

15-Jan-27

Rio Tinto plc ADR

Call Options

Purchased

1,000

65

American

15-Jan-27

Rio Tinto plc ADR

Call Options

Written

-540,056

76.5331

European

14-Jan-27

Rio Tinto plc ADR

Put Options

Written

30,000

48

American

15-Jan-27

3. AGREEMENTS TO PURCHASE OR SELL ETC.

Full details should be given so that the nature of the interest or position can be fully understood: