{
  "schema_version": "1.0.0",
  "ticker": "INR",
  "company_name": "ioneer Limited",
  "cutoff_date": "2026-10-09",
  "reviewed_at": "2026-10-09",
  "coverage_note": "The latest located ranked account table is dated 31 December 2025. BNY Group’s later substantial disclosure is shown separately at 2 April 2026; it overlaps nominee accounts and is not additive to the register.",
  "register": {
    "as_of_date": "2025-12-31",
    "issued_shares": null,
    "source_ids": [
      "register-dec2025"
    ],
    "holders": [
      {
        "holder_id": "inr-register-01",
        "name": "Citicorp Nominees Pty Ltd",
        "classification": "nominee_custodian",
        "shares": 699499580,
        "percentage": 22.75,
        "percentage_basis": "issued_shares",
        "as_of_date": "2025-12-31",
        "investor_id": null,
        "identity_note": null,
        "source_ids": [
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        "notes": []
      },
      {
        "holder_id": "inr-register-02",
        "name": "HSBC Custody Nominees (Australia) Limited",
        "classification": "nominee_custodian",
        "shares": 436280541,
        "percentage": 14.19,
        "percentage_basis": "issued_shares",
        "as_of_date": "2025-12-31",
        "investor_id": null,
        "identity_note": null,
        "source_ids": [
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        "notes": []
      },
      {
        "holder_id": "inr-register-03",
        "name": "J P Morgan Nominees Australia Pty Limited",
        "classification": "nominee_custodian",
        "shares": 163102292,
        "percentage": 5.3,
        "percentage_basis": "issued_shares",
        "as_of_date": "2025-12-31",
        "investor_id": null,
        "identity_note": null,
        "source_ids": [
          "register-dec2025"
        ],
        "notes": []
      },
      {
        "holder_id": "inr-register-04",
        "name": "Merrill Lynch (Australia) Nominees Pty Ltd",
        "classification": "nominee_custodian",
        "shares": 85788098,
        "percentage": 2.79,
        "percentage_basis": "issued_shares",
        "as_of_date": "2025-12-31",
        "investor_id": null,
        "identity_note": null,
        "source_ids": [
          "register-dec2025"
        ],
        "notes": []
      },
      {
        "holder_id": "inr-register-05",
        "name": "BNP Paribas Nominees Pty Ltd (IB AU Noms Retail Client)",
        "classification": "nominee_custodian",
        "shares": 61391603,
        "percentage": 2.0,
        "percentage_basis": "issued_shares",
        "as_of_date": "2025-12-31",
        "investor_id": null,
        "identity_note": null,
        "source_ids": [
          "register-dec2025"
        ],
        "notes": []
      },
      {
        "holder_id": "inr-register-06",
        "name": "Lithium Investors America LLC",
        "classification": "direct_holder",
        "shares": 56268106,
        "percentage": 1.83,
        "percentage_basis": "issued_shares",
        "as_of_date": "2025-12-31",
        "investor_id": null,
        "identity_note": null,
        "source_ids": [
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        "notes": []
      },
      {
        "holder_id": "inr-register-07",
        "name": "HSBC Custody Nominees (Australia) Limited – A/C 2",
        "classification": "nominee_custodian",
        "shares": 45977982,
        "percentage": 1.5,
        "percentage_basis": "issued_shares",
        "as_of_date": "2025-12-31",
        "investor_id": null,
        "identity_note": null,
        "source_ids": [
          "register-dec2025"
        ],
        "notes": []
      },
      {
        "holder_id": "inr-register-08",
        "name": "Mopti Pty Ltd (The Rowe Family A/C)",
        "classification": "direct_holder",
        "shares": 36690902,
        "percentage": 1.19,
        "percentage_basis": "issued_shares",
        "as_of_date": "2025-12-31",
        "investor_id": null,
        "identity_note": null,
        "source_ids": [
          "register-dec2025"
        ],
        "notes": []
      },
      {
        "holder_id": "inr-register-09",
        "name": "Versatile Money Pty Ltd (Versatile Money A/C)",
        "classification": "direct_holder",
        "shares": 33925169,
        "percentage": 1.1,
        "percentage_basis": "issued_shares",
        "as_of_date": "2025-12-31",
        "investor_id": null,
        "identity_note": null,
        "source_ids": [
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        ],
        "notes": []
      },
      {
        "holder_id": "inr-register-10",
        "name": "UBS Nominees Pty Ltd",
        "classification": "nominee_custodian",
        "shares": 32964987,
        "percentage": 1.07,
        "percentage_basis": "issued_shares",
        "as_of_date": "2025-12-31",
        "investor_id": null,
        "identity_note": null,
        "source_ids": [
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        ],
        "notes": []
      },
      {
        "holder_id": "inr-register-11",
        "name": "FNL Investments Pty Ltd",
        "classification": "direct_holder",
        "shares": 28950000,
        "percentage": 0.94,
        "percentage_basis": "issued_shares",
        "as_of_date": "2025-12-31",
        "investor_id": null,
        "identity_note": null,
        "source_ids": [
          "register-dec2025"
        ],
        "notes": []
      },
      {
        "holder_id": "inr-register-12",
        "name": "Warbont Nominees Pty Ltd (Unpaid Entrepot A/C)",
        "classification": "nominee_custodian",
        "shares": 27250524,
        "percentage": 0.89,
        "percentage_basis": "issued_shares",
        "as_of_date": "2025-12-31",
        "investor_id": null,
        "identity_note": null,
        "source_ids": [
          "register-dec2025"
        ],
        "notes": []
      },
      {
        "holder_id": "inr-register-13",
        "name": "FNL Investments Pty Ltd (Superannuation Plan A/C)",
        "classification": "direct_holder",
        "shares": 24000000,
        "percentage": 0.78,
        "percentage_basis": "issued_shares",
        "as_of_date": "2025-12-31",
        "investor_id": null,
        "identity_note": null,
        "source_ids": [
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        ],
        "notes": []
      },
      {
        "holder_id": "inr-register-14",
        "name": "Kolley Pty Ltd (Lucas Family A/C)",
        "classification": "direct_holder",
        "shares": 20998889,
        "percentage": 0.68,
        "percentage_basis": "issued_shares",
        "as_of_date": "2025-12-31",
        "investor_id": null,
        "identity_note": null,
        "source_ids": [
          "register-dec2025"
        ],
        "notes": []
      },
      {
        "holder_id": "inr-register-15",
        "name": "Howarth Commercial Pty Ltd",
        "classification": "direct_holder",
        "shares": 20619999,
        "percentage": 0.67,
        "percentage_basis": "issued_shares",
        "as_of_date": "2025-12-31",
        "investor_id": null,
        "identity_note": null,
        "source_ids": [
          "register-dec2025"
        ],
        "notes": []
      },
      {
        "holder_id": "inr-register-16",
        "name": "BNP Paribas Nominees Pty Ltd (HUB24 Custodial Serv Ltd)",
        "classification": "nominee_custodian",
        "shares": 20068000,
        "percentage": 0.65,
        "percentage_basis": "issued_shares",
        "as_of_date": "2025-12-31",
        "investor_id": null,
        "identity_note": null,
        "source_ids": [
          "register-dec2025"
        ],
        "notes": []
      },
      {
        "holder_id": "inr-register-17",
        "name": "Quality Life Pty Ltd (The Viking Fund A/C)",
        "classification": "direct_holder",
        "shares": 19524590,
        "percentage": 0.64,
        "percentage_basis": "issued_shares",
        "as_of_date": "2025-12-31",
        "investor_id": null,
        "identity_note": null,
        "source_ids": [
          "register-dec2025"
        ],
        "notes": []
      },
      {
        "holder_id": "inr-register-18",
        "name": "Quality Life Pty Ltd (The Neill Family A/C)",
        "classification": "direct_holder",
        "shares": 18850000,
        "percentage": 0.61,
        "percentage_basis": "issued_shares",
        "as_of_date": "2025-12-31",
        "investor_id": null,
        "identity_note": null,
        "source_ids": [
          "register-dec2025"
        ],
        "notes": []
      },
      {
        "holder_id": "inr-register-19",
        "name": "BNP Paribas Nominees Pty Ltd (Clearstream)",
        "classification": "nominee_custodian",
        "shares": 18805370,
        "percentage": 0.61,
        "percentage_basis": "issued_shares",
        "as_of_date": "2025-12-31",
        "investor_id": null,
        "identity_note": null,
        "source_ids": [
          "register-dec2025"
        ],
        "notes": []
      },
      {
        "holder_id": "inr-register-20",
        "name": "Bond Street Custodians Limited (Laman - D05019 A/C)",
        "classification": "nominee_custodian",
        "shares": 15500000,
        "percentage": 0.5,
        "percentage_basis": "issued_shares",
        "as_of_date": "2025-12-31",
        "investor_id": null,
        "identity_note": null,
        "source_ids": [
          "register-dec2025"
        ],
        "notes": []
      }
    ]
  },
  "substantial_holders": [
    {
      "holder_id": "inr-bny-group",
      "name": "The Bank of New York Mellon Corporation and related group entities",
      "classification": "reporting_group",
      "shares": 286419810,
      "percentage": 9.32,
      "percentage_basis": "voting_power",
      "as_of_date": "2026-04-02",
      "investor_id": null,
      "identity_note": "The company’s Form 604 names BNY and its controlled group entities; no registry identity link asserted.",
      "source_ids": [
        "bny-change-apr2026"
      ],
      "notes": [
        "Updated holding supersedes the company annual report’s 31 December 2025 BNY figure of 215,126,010."
      ]
    },
    {
      "holder_id": "inr-centaurus",
      "name": "Centaurus",
      "classification": "reporting_group",
      "shares": 377352433,
      "percentage": 12.27,
      "percentage_basis": "issued_shares",
      "as_of_date": "2025-12-31",
      "investor_id": null,
      "identity_note": null,
      "source_ids": [
        "register-dec2025"
      ],
      "notes": [
        "Company-reported substantial holder at the annual report date; no later Centaurus notice located."
      ]
    }
  ],
  "sources": [
    {
      "source_id": "register-dec2025",
      "title": "Six-month Annual Report — Twenty largest quoted shareholders",
      "publisher": "ioneer Limited / ASX",
      "url": "https://asx.api.markitdigital.com/asx-research/1.0/file/2924-03069757-2A1661107",
      "publication_date": "2026-03-18",
      "accessed_date": "2026-10-09",
      "locator": "PDF p. 91 (printed p. 90), ordinary share register as at 31 December 2025; top 20 table",
      "detail": "Complete top-20 ordinary-share account table and two company-reported substantial holders as at 31 December 2025."
    },
    {
      "source_id": "bny-change-apr2026",
      "title": "Change in substantial holding — BNY Group",
      "publisher": "ioneer Limited / ASX",
      "url": "https://asx.api.markitdigital.com/asx-research/1.0/file/2924-03075696-2A1664489",
      "publication_date": "2026-04-07",
      "accessed_date": "2026-10-09",
      "locator": "Form 604 page 1 and annexures, voting power after changes dated 2 April 2026",
      "detail": "BNY Group reports 286,419,810 ordinary share votes (9.32%) after the disclosed changes."
    }
  ],
  "limitations": [
    "No ranked account register newer than 31 December 2025 was located. Issued-share denominator is not stated in the cited table, so register.issued_shares is null.",
    "BNY Group’s 2 April 2026 notice is later and may reflect subsequent capital changes; substantial-holder percentages retain each source’s disclosed basis and date."
  ]
}