HTTP 200 OK
Allow: GET
Content-Type: application/json
Vary: Accept
{
"count": 17116,
"next": "https://lda.senate.gov/api/v1/registrants/?format=api&ordering=-name&page=219",
"previous": "https://lda.senate.gov/api/v1/registrants/?format=api&ordering=-name&page=217",
"results": [
{
"id": 400320506,
"url": "https://lda.senate.gov/api/v1/registrants/400320506/?format=api",
"house_registrant_id": 40295,
"name": "ORION ADVOCATES",
"description": "Government relations consultant",
"address_1": "8 E Street, SE",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "Washington",
"state": "DC",
"state_display": "District of Columbia",
"zip": "20003",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "PATRICK RITA",
"contact_telephone": "+1 703-887-3131",
"dt_updated": "2025-07-30T11:29:58.885733-04:00"
},
{
"id": 401106893,
"url": "https://lda.senate.gov/api/v1/registrants/401106893/?format=api",
"house_registrant_id": 45740,
"name": "ORIGIN MATERIALS OPERATING, INC.",
"description": null,
"address_1": "930 Riverside Pkwy #10",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "West Sacramento",
"state": "CA",
"state_display": "California",
"zip": "95605",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "ALEX WARD",
"contact_telephone": "+1 519-903-4753",
"dt_updated": "2025-08-18T15:43:23.971248-04:00"
},
{
"id": 401107217,
"url": "https://lda.senate.gov/api/v1/registrants/401107217/?format=api",
"house_registrant_id": 55882,
"name": "ORIGIN ADVOCACY LLC",
"description": null,
"address_1": "PO Box 2954",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "Arlington",
"state": "VA",
"state_display": "Virginia",
"zip": "22202",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "SEAN MCLEAN",
"contact_telephone": "+1 202-649-0115",
"dt_updated": "2026-01-20T16:35:45.191644-05:00"
},
{
"id": 401109792,
"url": "https://lda.senate.gov/api/v1/registrants/401109792/?format=api",
"house_registrant_id": 77144,
"name": "ORICA AUSTRALIA PTY LTD",
"description": null,
"address_1": "1 Nicholson Street",
"address_2": "Victoria",
"address_3": "Victoria Australia 3002",
"address_4": null,
"city": "East Melbourne",
"state": null,
"state_display": null,
"zip": "3002",
"country": "AU",
"country_display": "Australia",
"ppb_country": "AU",
"ppb_country_display": "Australia",
"contact_name": "MEL CHEESMAN",
"contact_telephone": "+61 414 254 717",
"dt_updated": "2025-07-30T13:02:59.440895-04:00"
},
{
"id": 401104008,
"url": "https://lda.senate.gov/api/v1/registrants/401104008/?format=api",
"house_registrant_id": 401104008,
"name": "ORGANOVO, INC.",
"description": "life sciences",
"address_1": "6275 Nancy Ridge Drive",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "San Diego",
"state": "CA",
"state_display": "California",
"zip": "92121",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "PETER RUBIN",
"contact_telephone": "+1 202-271-6719",
"dt_updated": "2022-04-06T16:06:55.581291-04:00"
},
{
"id": 401106108,
"url": "https://lda.senate.gov/api/v1/registrants/401106108/?format=api",
"house_registrant_id": 401106108,
"name": "ORGANON & CO.",
"description": "Global Healthcare",
"address_1": "30 Hudson St.",
"address_2": "33rd Floor",
"address_3": null,
"address_4": null,
"city": "Jersey City",
"state": "NJ",
"state_display": "New Jersey",
"zip": "07302",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "NICK SCHEMMEL",
"contact_telephone": "+1 201-885-8089",
"dt_updated": "2025-07-30T13:45:59.543715-04:00"
},
{
"id": 401103135,
"url": "https://lda.senate.gov/api/v1/registrants/401103135/?format=api",
"house_registrant_id": 401103135,
"name": "ORGANOGENESIS INC.",
"description": "Biotechnology/Medical Device",
"address_1": "85 Dan Road",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "Canton",
"state": "MA",
"state_display": "Massachusetts",
"zip": "02021",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "DANIEL BRODY",
"contact_telephone": "+1 781-615-1649",
"dt_updated": "2026-01-19T06:02:26.354601-05:00"
},
{
"id": 401106385,
"url": "https://lda.senate.gov/api/v1/registrants/401106385/?format=api",
"house_registrant_id": null,
"name": "ORGANIZATION MANAGEMENT GROUP, INC.",
"description": null,
"address_1": "10 G STREET NE STE 600",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "WASHINGTON",
"state": "DC",
"state_display": "District of Columbia",
"zip": "20002",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "BENJAMIN GARRETT",
"contact_telephone": "+1 540-320-1130",
"dt_updated": "2022-01-21T18:01:03.120220-05:00"
},
{
"id": 401105116,
"url": "https://lda.senate.gov/api/v1/registrants/401105116/?format=api",
"house_registrant_id": 401105116,
"name": "ORGANIZATION MANAGEMENT GROUP (DBA LEGISLATIVE STRATEGIES GROUP)",
"description": "Association management company and government affairs firm.",
"address_1": "8100 Three Chopt Road",
"address_2": "Suite 226",
"address_3": null,
"address_4": null,
"city": "Richmond",
"state": "VA",
"state_display": "Virginia",
"zip": "23229",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "TYLER HUNT CRADDOCK",
"contact_telephone": "+1 804-673-5684",
"dt_updated": "2025-07-22T13:39:31.164398-04:00"
},
{
"id": 321191,
"url": "https://lda.senate.gov/api/v1/registrants/321191/?format=api",
"house_registrant_id": 39566,
"name": "ORGANIC TRADE ASSOCIATION",
"description": "Trade Association",
"address_1": "444 North Capitol Street NW",
"address_2": "Suite 445A",
"address_3": null,
"address_4": null,
"city": "Washington",
"state": "DC",
"state_display": "District of Columbia",
"zip": "20001",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "STEPHANIE JERGER",
"contact_telephone": "+1 202-539-8042",
"dt_updated": "2025-09-18T12:33:33.808044-04:00"
},
{
"id": 400744224,
"url": "https://lda.senate.gov/api/v1/registrants/400744224/?format=api",
"house_registrant_id": 400744224,
"name": "OREXIGEN THERAPEUTICS, INC.",
"description": "A biopharmaceutical company focused on the treatment of obesity",
"address_1": "3344 North Torrey Pines Ct., Ste 200",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "La Jolla",
"state": "CA",
"state_display": "California",
"zip": "92037",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "HEATHER TURNER",
"contact_telephone": "+1 847-361-6719",
"dt_updated": "2022-04-06T16:08:13.569636-04:00"
},
{
"id": 309390,
"url": "https://lda.senate.gov/api/v1/registrants/309390/?format=api",
"house_registrant_id": 38575,
"name": "OREGON STATE UNIVERSITY",
"description": null,
"address_1": "652 KERR ADMINISTRATION BUILDING",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "CORVALLIS",
"state": "OR",
"state_display": "Oregon",
"zip": "97331",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "GABRIELLE SERRA",
"contact_telephone": "+1 541-737-6320",
"dt_updated": "2026-01-18T20:39:22.335364-05:00"
},
{
"id": 30291,
"url": "https://lda.senate.gov/api/v1/registrants/30291/?format=api",
"house_registrant_id": 31946,
"name": "OREGON HEALTH & SCIENCE UNIVERSITY",
"description": "Academic Health Center",
"address_1": "3181 S.W. SAM JACKSON PARK ROAD",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "PORTLAND",
"state": "OR",
"state_display": "Oregon",
"zip": "97239",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "LINDSEY CAPPS",
"contact_telephone": "+1 971-429-1723",
"dt_updated": "2026-01-16T12:19:53.637706-05:00"
},
{
"id": 30280,
"url": "https://lda.senate.gov/api/v1/registrants/30280/?format=api",
"house_registrant_id": 33392,
"name": "OREGON GRADUATE INST OF SCIENCE",
"description": null,
"address_1": "PO BOX 91000",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "PORTLAND",
"state": "OR",
"state_display": "Oregon",
"zip": null,
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "",
"contact_telephone": "",
"dt_updated": "2022-01-13T14:50:50.700951-05:00"
},
{
"id": 400263203,
"url": "https://lda.senate.gov/api/v1/registrants/400263203/?format=api",
"house_registrant_id": 40004,
"name": "OREGON FARM BUREAU FEDERATION",
"description": "Agriculture Trade Association",
"address_1": "1320 Capitol Street NE",
"address_2": "Suite 200",
"address_3": null,
"address_4": null,
"city": "Salem",
"state": "OR",
"state_display": "Oregon",
"zip": "97301",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "DAVID DILLON",
"contact_telephone": "+1 503-399-1701",
"dt_updated": "2022-12-08T15:09:48.672916-05:00"
},
{
"id": 401108947,
"url": "https://lda.senate.gov/api/v1/registrants/401108947/?format=api",
"house_registrant_id": 56687,
"name": "ORCHARD THERAPEUTICS NORTH AMERICA",
"description": null,
"address_1": "101 Seaport Boulevard",
"address_2": "7th Floor",
"address_3": null,
"address_4": null,
"city": "Boston",
"state": "MA",
"state_display": "Massachusetts",
"zip": "02210",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "JENNIE U SKELTON",
"contact_telephone": "+1 415-903-2800",
"dt_updated": "2026-01-26T17:54:37.608477-05:00"
},
{
"id": 319277,
"url": "https://lda.senate.gov/api/v1/registrants/319277/?format=api",
"house_registrant_id": 39526,
"name": "ORBITZ WORLDWIDE",
"description": "Online travel company",
"address_1": "500 West Madison Street",
"address_2": "Suite 1000",
"address_3": null,
"address_4": null,
"city": "Chicago",
"state": "IL",
"state_display": "Illinois",
"zip": "60661",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "CHRIS CHIAMES",
"contact_telephone": "+1 312-260-2344",
"dt_updated": "2022-04-06T16:06:43.519211-04:00"
},
{
"id": 60594,
"url": "https://lda.senate.gov/api/v1/registrants/60594/?format=api",
"house_registrant_id": 35355,
"name": "ORBITZ, LLC",
"description": null,
"address_1": "200 S. WACKER DRIVE",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "CHICAGO",
"state": "IL",
"state_display": "Illinois",
"zip": "60606",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "",
"contact_telephone": "",
"dt_updated": "2022-01-13T14:53:22.172497-05:00"
},
{
"id": 30278,
"url": "https://lda.senate.gov/api/v1/registrants/30278/?format=api",
"house_registrant_id": 31236,
"name": "ORBITAL SCIENCES CORPORATION",
"description": "Aerospace Manufacturing",
"address_1": "45101 WARP DRIVE",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "DULLES",
"state": "VA",
"state_display": "Virginia",
"zip": "20166",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "ALLISON MULDOON",
"contact_telephone": "+1 703-412-5988",
"dt_updated": "2022-04-06T16:07:08.214280-04:00"
},
{
"id": 1067,
"url": "https://lda.senate.gov/api/v1/registrants/1067/?format=api",
"house_registrant_id": 30323,
"name": "ORBITAL ATK, INC.",
"description": "defense and aerospace manufacturing",
"address_1": "45101 Warp Drive",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "Dulles",
"state": "VA",
"state_display": "Virginia",
"zip": "20166",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "EDWARD FORTUNATO",
"contact_telephone": "+1 703-412-3211",
"dt_updated": "2022-04-06T16:04:31.677421-04:00"
},
{
"id": 85958,
"url": "https://lda.senate.gov/api/v1/registrants/85958/?format=api",
"house_registrant_id": 36553,
"name": "ORASURE TECHNOLOGIES, INC",
"description": null,
"address_1": "220 EAST FIRST STREET",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "BETHLEHEM",
"state": "PA",
"state_display": "Pennsylvania",
"zip": "18015",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "MRS. LEE ANN SMOLICK",
"contact_telephone": "+1 610-882-1820",
"dt_updated": "2022-04-06T16:06:22.288700-04:00"
},
{
"id": 401104355,
"url": "https://lda.senate.gov/api/v1/registrants/401104355/?format=api",
"house_registrant_id": 401104355,
"name": "ORANO USA LLC (FORMERLY KNOWN AS AREVA NUCLEAR MATERIALS LLC)",
"description": "nuclear energy",
"address_1": "4747 Bethesda Ave",
"address_2": "Suite 1001",
"address_3": null,
"address_4": null,
"city": "Bethesda",
"state": "MD",
"state_display": "Maryland",
"zip": "20814",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "ALEXANDER HOPPES",
"contact_telephone": "+1 301-841-1600",
"dt_updated": "2025-07-30T11:21:59.041741-04:00"
},
{
"id": 30267,
"url": "https://lda.senate.gov/api/v1/registrants/30267/?format=api",
"house_registrant_id": 32453,
"name": "ORACLE CORPORATION",
"description": null,
"address_1": "2300 Oracle Way",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "Austin",
"state": "TX",
"state_display": "Texas",
"zip": "78741",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "JOSHUA PITCOCK",
"contact_telephone": "+1 202-721-4829",
"dt_updated": "2025-07-30T11:18:58.860350-04:00"
},
{
"id": 296830,
"url": "https://lda.senate.gov/api/v1/registrants/296830/?format=api",
"house_registrant_id": 37528,
"name": "ORACLE CERNER (FORMERLY CERNER CORPORATION)",
"description": "Health IT",
"address_1": "2900 Rockcreek Parkway",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "Kansas City",
"state": "MO",
"state_display": "Missouri",
"zip": "64117",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "PETER HENRY",
"contact_telephone": "+1 816-906-3201",
"dt_updated": "2023-07-30T12:25:16.725496-04:00"
},
{
"id": 401108639,
"url": "https://lda.senate.gov/api/v1/registrants/401108639/?format=api",
"house_registrant_id": 56558,
"name": "OPTIVER SERVICES US LLC",
"description": null,
"address_1": "130 E. Randolph St.",
"address_2": "Suite 800",
"address_3": null,
"address_4": null,
"city": "Chicago",
"state": "IL",
"state_display": "Illinois",
"zip": "60601",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "MATT MACKENZIE",
"contact_telephone": "+1 312-821-9500",
"dt_updated": "2026-01-23T12:18:15.437883-05:00"
}
]
}