Magnite, Inc. (MGNI) insider trading

{
  "status": "OK",
  "results": [
    {
      "tickers": [
        "MGNI"
      ],
      "issuer_cik": "0001595974",
      "owner_cik": "0001411765",
      "accession_number": "0001411765-26-000011",
      "form_type": "4",
      "filing_date": "2026-10-14",
      "period_of_report": "2026-10-12",
      "issuer_name": "MAGNITE, INC.",
      "issuer_trading_symbol": "MGNI",
      "owner_name": "Caine Paul",
      "is_director": true,
      "is_officer": false,
      "is_ten_percent_owner": false,
      "is_other": false,
      "security_type": "non_derivative",
      "record_type": "transaction",
      "security_title": "Common Stock",
      "transaction_timeliness": "O",
      "aff_10b5_one": true,
      "transaction_date": "2026-10-12",
      "transaction_code": "S",
      "equity_swap_involved": false,
      "transaction_shares": 12500,
      "transaction_price_per_share": 25.29,
      "transaction_acquired_disposed": "D",
      "shares_owned_following_transaction": 124901,
      "transaction_value": 316125,
      "not_subject_to_section_16": false,
      "direct_or_indirect": "D",
      "footnotes": [
        {
          "id": "F1",
          "description": "The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 20, 2025."
        },
        {
          "id": "F2",
          "description": "The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $24.92 to $25.50, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote to this Form 4."
        }
      ]
    },
    {
      "tickers": [
        "MGNI"
      ],
      "issuer_cik": "0001595974",
      "owner_cik": "0001350876",
      "accession_number": "0001350876-26-000005",
      "form_type": "4",
      "filing_date": "2026-09-18",
      "period_of_report": "2026-09-17",
      "issuer_name": "MAGNITE, INC.",
      "issuer_trading_symbol": "MGNI",
      "owner_name": "Knopper Douglas S",
      "is_director": true,
      "is_officer": false,
      "is_ten_percent_owner": false,
      "is_other": false,
      "security_type": "non_derivative",
      "record_type": "transaction",
      "security_title": "Common Stock",
      "transaction_timeliness": "O",
      "aff_10b5_one": true,
      "transaction_date": "2026-09-17",
      "transaction_code": "S",
      "equity_swap_involved": false,
      "transaction_shares": 37337,
      "transaction_price_per_share": 26.28,
      "transaction_acquired_disposed": "D",
      "shares_owned_following_transaction": 51136,
      "transaction_value": 981216.36,
      "not_subject_to_section_16": false,
      "direct_or_indirect": "D",
      "footnotes": [
        {
          "id": "F1",
          "description": "The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 12, 2025."
        },
        {
          "id": "F2",
          "description": "The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.00 to $26.50, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote to this Form 4."
        }
      ]
    }
  ]
}

// trimmed to 2 results

The response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.