{
  "api": "assay-systems/v1",
  "key_tier": "none",
  "retrieved": "2026-10-18T02:40:05Z",
  "source": "Assay Systems register, https://assay-systems.com/register/",
  "access_notice": "On 15 November 2026, automated access to assay-systems.com closes. After that date, access is available only under a paid annual subscription contract. Contact: contact@assay-systems.com",
  "data": {
    "id": "ASY-CO-1KYP44Q0L3",
    "type": "page",
    "country": "co",
    "name": "UN4 S.A.S: public contracts won without a rival in Colombia",
    "url": "https://assay-systems.com/register/co/uncontested/s/un4-s-a-s/",
    "figures": [
      {
        "label": "uncontested awards",
        "value": 6,
        "unit": "count"
      },
      {
        "label": "of its awards",
        "value": 100,
        "unit": "percent",
        "display": "100%"
      },
      {
        "label": "without a competition",
        "value": 6,
        "unit": "count"
      },
      {
        "label": "single bid",
        "value": 0,
        "unit": "count"
      }
    ],
    "text": [
      "UN4 S.A.S won 6 of its 6 public contract awards in Colombia without a rival from 2023-02-01 to 2026-07-14: 6 without a competition and 0 after a competition that drew a single bid. 1 buyer awarded it without a rival, the largest RIA S.A with 6."
    ],
    "tables": [
      [
        {},
        {
          "Date": "2026-07-14",
          "Buyer": "RIA S.A CO1.PCCNTR.9643303",
          "Buyer link": "https://assay-systems.com/register/co/uncontested/b/ria-s-a/",
          "How": "No competition Contratación régimen especial",
          "Stated reason": "Regla aplicable"
        },
        {
          "Date": "2026-01-30",
          "Buyer": "RIA S.A CO1.PCCNTR.9300679",
          "Buyer link": "https://assay-systems.com/register/co/uncontested/b/ria-s-a/",
          "How": "No competition Contratación régimen especial",
          "Stated reason": "Regla aplicable"
        },
        {
          "Date": "2025-03-07",
          "Buyer": "RIA S.A CO1.PCCNTR.7620636",
          "Buyer link": "https://assay-systems.com/register/co/uncontested/b/ria-s-a/",
          "How": "No competition Contratación régimen especial",
          "Stated reason": "Regla aplicable"
        },
        {
          "Date": "2024-03-01",
          "Buyer": "RIA S.A CO1.PCCNTR.6025592",
          "Buyer link": "https://assay-systems.com/register/co/uncontested/b/ria-s-a/",
          "How": "No competition Contratación régimen especial",
          "Stated reason": "Regla aplicable"
        },
        {
          "Date": "2023-08-15",
          "Buyer": "RIA S.A CO1.PCCNTR.5297535",
          "Buyer link": "https://assay-systems.com/register/co/uncontested/b/ria-s-a/",
          "How": "No competition Contratación régimen especial",
          "Stated reason": "Regla aplicable"
        },
        {
          "Date": "2023-02-01",
          "Buyer": "RIA S.A CO1.PCCNTR.4515277",
          "Buyer link": "https://assay-systems.com/register/co/uncontested/b/ria-s-a/",
          "How": "No competition Contratación régimen especial",
          "Stated reason": "Regla aplicable"
        }
      ]
    ],
    "records": [
      {
        "name": "all of Colombia",
        "url": "https://assay-systems.com/register/co/uncontested/"
      },
      {
        "name": "record in the register",
        "url": "https://assay-systems.com/register/co/un4-s-a-s/"
      },
      {
        "name": "RIA S.A",
        "url": "https://assay-systems.com/register/co/uncontested/b/ria-s-a/"
      },
      {
        "name": "All countries",
        "url": "https://assay-systems.com/register/uncontested/"
      }
    ],
    "assay_record": "ASY-CO-1KYP44Q0L3",
    "cite_as": "Assay Systems, \"UN4 S.A.S: public contracts won without a rival in Colombia\", https://assay-systems.com/register/co/uncontested/s/un4-s-a-s/"
  }
}