Antofagasta : Results of Annual General Meeting (20260507 anto agm 2026 agm poll voting results)

NEWS RELEASE, 7 MAY 2026 ANTOFAGASTA PLC RESULTS OF 2026 ANNUAL GENERAL MEETING

At today's Annual General Meeting, a poll was held on each of the resolutions proposed in the Notice of Meeting dated 19 March 2026.

The results of the polls are:

Resolution Votes For Votes Against Votes Cast as % of Issued Share Capital Votes withheld

(1)	Adopt the 2025 Annual Report	1,104,043,653	35,202		93.10%		3,350,852
	and Financial Statements	100.00%	0.00%
(2)	Approve the 2025	1,081,551,379	25,827,484		93.38%		50,844
	Remuneration Report
		97.67%	2.33%
(3)	Approve the 2026	1,045,808,029	61,551,232		93.38%		70,446
	Remuneration Policy
		94.44%	5.56%
(4) Declare a final dividend		1,106,705,353	707,524		93.39%		16,830
		99.94%	0.06%
(5) Re-elect Jean-Paul Luksic as a		994,995,827	110,417,813		93.22%		2,016,067
Director
		90.01%	9.99%
(6)	Re-elect Francisca Castro as a	1,069,407,116	37,998,825		93.38%		23,766
	Director
		96.57%		3.43%
		238,754,986	*	37,998,825	*
		86.27%	*	13.73%	*
(7)	Re-elect Ramón Jara as a	1,071,239,875		36,165,789		93.38%	24,043
	Director
		96.73%	3.27%
(8)	Re-elect Juan Claro as a	1,095,198,897	12,206,760		93.38%		24,050
	Director
		98.90%	1.10%
(9)	Re-elect Michael Anglin as a	1,105,714,064	1,691,817		93.38%		23,826
Director 99.85% 0.15% 275,061,934 * 1,691,817 * 99.39% * 0.61% *

(10)	Re-elect Tony Jensen as a	1,094,397,536	13,008,353		93.38%		23,818
	Director
		98.83%		1.17%
		263,745,406	*	13,008,353	*
		95.30%	*	4.70%	*
(11)	Re-elect Eugenia Parot as a Director	1,104,878,821		1,709,632		93.32%	841,254
		99.85%		0.15%
		274,226,691	*	1,709,632	*
		99.38%	*	0.62%	*
(12)	Re-elect Heather Lawrence as a Director	1,105,718,597		1,687,333		93.38%	23,777
		99.85%		0.15%
		275,066,467	*	1,687,333	*
		99.39%	*	0.61%	*
(13)	Re-elect Tracey Kerr as a Director	1,105,747,308		1,657,750		93.38%	24,649
		99.85%		0.15%
		275,095,178	*	1,657,750	*
		99.40%	*	0.60%	*
(14)	Elect Ignacio Bustamante as a Director	1,106,851,814		554,250		93.38%	23,643
		99.95%		0.05%
		276,199,684	*	554,250	*
		99.80%	*	0.20%	*
(15)	Elect Andrónico Luksic as a Director	1,105,767,241		1,645,871		93.39%	16,595
		99.85%	0.15%
(16)	Re-appoint Deloitte LLP as auditors	1,107,372,513	39,985		93.39%		17,209
		100.00%	0.00%
(17) Authorise the Audit and Risk		1,106,995,566	416,952		93.39%		17,189
Committee to fix the auditor's
remuneration		99.96%	0.04%
(18) Grant Directors authority to		1,087,827,057	19,571,976		93.38%		30,674
allot securities 98.23% 1.77%

(19)

Grant Directors authority to

allot securities for cash other than on a pro rata basis to shareholders

1,073,267,464

34,122,314

93.38%

39,929

96.92%

3.08%

(20) Grant Directors authority to allot securities for cash other	1,062,855,018	44,534,967	93.38%	39,722
than on a pro rata basis to
shareholders for the purposes of an acquisition or specified	95.98%	4.02%
capital investment
(21) Authorise purchase of own	1,101,887,578	5,106,085	93.35%	436,044
shares 99.54% 0.46%

(22)

Permit general meetings to be

called on not less than 14 days' clear notice

1,088,998,489

18,413,899

93.39%

17,319

98.34%

1.66%

• Result of the votes cast by shareholders excluding the controlling shareholders.

  Notes to the poll results

  1. Any proxy votes that were at the discretion of the Chairman are included in the total of "votes for" each resolution.

  2. Percentages of votes for and votes against each resolution are included on the basis of votes cast and therefore exclude abstentions.

  3. The Company had in issue 985,856,695 Ordinary Shares carrying one vote each, and 2,000,000 5% Cumulative Preference Shares carrying 100 votes each. Accordingly, the total number of votes available was 1,185,856,695 votes and the total number of votes available excluding the controlling shareholders was 350,086,090 votes at the Annual General Meeting.

  4. "Votes Cast as % of Issued Share Capital" represents the percentage of votes cast as a percentage of all

votes that could have been cast on the resolution.

These results have been published on the Company's website (https://www.antofagasta.co.uk).

In accordance with Listing Rule 6.4.2, copies of resolutions 18, 19, 20, 21 and 22 passed at the Annual General Meeting will be submitted to the National Storage Mechanism today and will shortly be available for inspection at https://www.fca.org.uk/markets/primary-markets/regulatory-disclosures/national-storage-mechanism.

Investors - London Rosario Orchard	[e-mail]	Media - London Sara Powell	[e-mail]
Robert Simmons Telephone	[e-mail] [phone]	Ben Brewerton Nick Hennis Telephone	[phone]
		Media - Santiago Pablo Orozco	[e-mail]
		Carolina Pica Telephone	[e-mail] [phone]

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