# Arena Pharmaceuticals Inc. (ARNA)

Source: https://www.quantisnow.com/company/ARNA
Generated: 2026-11-13T10:40:43.250Z

- Ticker: ARNA
- Exchange: NASDAQ
- Sector: Health Care
- Industry: Biotechnology: Pharmaceutical Preparations
- IPO year: 2000
- Website: arenapharm.com

## About

Arena Pharmaceuticals, Inc., a biopharmaceutical company, focuses on providing novel medicines with pharmacology and pharmacokinetics to patients worldwide. Its investigational clinical programs include Etrasimod (APD334) that is in Phase III clinical trial for ulcerative colitis, Phase IIb/III clinical trial for Crohn's disease, Phase II clinical trial for alopecia areata, Phase III clinical trial for atopic dermatitis, and Phase IIb clinical trial for eosinophilic esophagitis; Olorinab (APD371), which is in Phase IIb clinical trial for the treatment of abdominal pain associated with irritable bowel syndrome; APD418 that is in Phase I clinical trial for acute heart failure; and Temanogrel for coronary microvascular obstruction is in Phase II clinical trial. It also develops ralinepag (APD811), which is in Phase III clinical trial for pulmonary arterial hypertension. The company has collaboration agreements with Second Genome, Inc.; United Therapeutics Corporation; Everest Medicines Limited; Beacon Discovery; Boehringer Ingelheim International GmbH; Eisai Co., Ltd.; Eisai Inc.; and Aristea Therapeutics, Inc. for the development of RIST4721 for treatment of serious immune-mediated inflammatory diseases. Arena Pharmaceuticals, Inc. was incorporated in 1997 and is based in Park City, Utah.

## Latest ARNA news and filings

- 2026-03-18 06:30 UTC [Leadership Update] [Sensorion Reports Full-Year 2025 Results, Provides Corporate Update and Announces Release of Annual Report](https://www.quantisnow.com/insight/sensorion-reports-full-year-2025-results-provides-corporate-update-and-announces-6454330)
- 2025-09-17 05:30 UTC [Leadership Update] [Sensorion Reports 2025 Half-Year Results, Provides Corporate Update and Announces Availability of Half-Year Report](https://www.quantisnow.com/insight/sensorion-reports-2025-half-year-results-provides-corporate-update-and-announces-6203163)
- 2025-04-02 05:30 UTC [Leadership Update] [Sensorion Strengthens Leadership Team with Appointment of Amit Munshi as Chairman of the Board and Independent Director](https://www.quantisnow.com/insight/sensorion-strengthens-leadership-team-with-appointment-of-amit-munshi-as-5970829)
- 2022-03-21 10:03 UTC [SEC Form 15-12G filed by Arena Pharmaceuticals Inc.](https://www.quantisnow.com/insight/sec-form-15-12g-filed-by-arena-pharmaceuticals-inc-2599408)
- 2022-03-16 04:15 UTC [SEC Form EFFECT] [SEC Form EFFECT filed by Arena Pharmaceuticals Inc.](https://www.quantisnow.com/insight/sec-form-effect-filed-by-arena-pharmaceuticals-inc-2580272)
- 2022-03-16 04:15 UTC [SEC Form EFFECT] [SEC Form EFFECT filed by Arena Pharmaceuticals Inc.](https://www.quantisnow.com/insight/sec-form-effect-filed-by-arena-pharmaceuticals-inc-2580224)
- 2022-03-16 04:15 UTC [SEC Form EFFECT] [SEC Form EFFECT filed by Arena Pharmaceuticals Inc.](https://www.quantisnow.com/insight/sec-form-effect-filed-by-arena-pharmaceuticals-inc-2580217)
- 2022-03-16 04:15 UTC [SEC Form EFFECT] [SEC Form EFFECT filed by Arena Pharmaceuticals Inc.](https://www.quantisnow.com/insight/sec-form-effect-filed-by-arena-pharmaceuticals-inc-2580205)
- 2022-03-11 21:24 UTC [SEC Form 4] [SEC Form 4: Nova Tina Susan disposed of 20,843 shares, closing all direct ownership in the company](https://www.quantisnow.com/insight/sec-form-4-nova-tina-susan-disposed-of-20843-shares-2563533)
- 2022-03-11 21:24 UTC [SEC Form 4] [SEC Form 4: Fetzer Oliver disposed of 9,692 shares, closing all direct ownership in the company](https://www.quantisnow.com/insight/sec-form-4-fetzer-oliver-disposed-of-9692-shares-closing-2563528)
- 2022-03-11 21:23 UTC [SEC Form 4] [SEC Form 4: Knobil Katharine disposed of 6,821 shares, closing all direct ownership in the company](https://www.quantisnow.com/insight/sec-form-4-knobil-katharine-disposed-of-6821-shares-closing-2563514)
- 2022-03-11 21:23 UTC [SEC Form 4] [SEC Form 4: Gallahue Kieran disposed of 12,911 shares, closing all direct ownership in the company](https://www.quantisnow.com/insight/sec-form-4-gallahue-kieran-disposed-of-12911-shares-closing-2563513)
- 2022-03-11 21:23 UTC [SEC Form 4] [SEC Form 4: Jarrett Jennifer disposed of 11,217 shares, closing all direct ownership in the company](https://www.quantisnow.com/insight/sec-form-4-jarrett-jennifer-disposed-of-11217-shares-closing-2563505)
- 2022-03-11 21:22 UTC [SEC Form 4] [SEC Form 4: Neil Garry Arthur disposed of 11,217 shares, closing all direct ownership in the company](https://www.quantisnow.com/insight/sec-form-4-neil-garry-arthur-disposed-of-11217-shares-2563501)
- 2022-03-11 21:22 UTC [SEC Form 4] [SEC Form 4: Schoch Steven J disposed of 4,600 shares, closing all direct ownership in the company](https://www.quantisnow.com/insight/sec-form-4-schoch-steven-j-disposed-of-4600-shares-2563498)
- 2022-03-11 21:21 UTC [SEC Form 4] [SEC Form 4: Ouzren Nawal disposed of 4,555 shares, closing all direct ownership in the company](https://www.quantisnow.com/insight/sec-form-4-ouzren-nawal-disposed-of-4555-shares-closing-2563497)
- 2022-03-11 21:22 UTC [SEC Form 4] [SEC Form 4: Dallas Jayson Donald Alexander disposed of 7,152 shares, closing all direct ownership in the company](https://www.quantisnow.com/insight/sec-form-4-dallas-jayson-donald-alexander-disposed-of-7152-2563495)
- 2022-03-11 21:11 UTC [SEC Form 4] [SEC Form 4: Munshi Amit disposed of 114,897 shares and gifted 10,500 shares, closing all direct ownership in the company](https://www.quantisnow.com/insight/sec-form-4-munshi-amit-disposed-of-114897-shares-and-2563333)
- 2022-03-11 21:12 UTC [SEC Form 4] [SEC Form 4: Manion Douglas J. disposed of 36,462 shares, closing all direct ownership in the company](https://www.quantisnow.com/insight/sec-form-4-manion-douglas-j-disposed-of-36462-shares-2563330)
- 2022-03-11 21:12 UTC [SEC Form 4] [SEC Form 4: Stelzer Laurie disposed of 37,208 shares, closing all direct ownership in the company](https://www.quantisnow.com/insight/sec-form-4-stelzer-laurie-disposed-of-37208-shares-closing-2563329)
- 2022-03-11 21:09 UTC [SEC Form 4] [SEC Form 4: Schmidt Joan disposed of 36,287 shares, closing all direct ownership in the company](https://www.quantisnow.com/insight/sec-form-4-schmidt-joan-disposed-of-36287-shares-closing-2563292)
- 2022-03-11 21:07 UTC [SEC Form 4] [SEC Form 4: Aurentz Vincent disposed of 55,964 shares, closing all direct ownership in the company](https://www.quantisnow.com/insight/sec-form-4-aurentz-vincent-disposed-of-55964-shares-closing-2563255)
- 2022-03-11 21:06 UTC [SEC Form 4] [SEC Form 4: Lisicki Robert disposed of 37,563 shares, closing all direct ownership in the company](https://www.quantisnow.com/insight/sec-form-4-lisicki-robert-disposed-of-37563-shares-closing-2563243)
- 2022-03-11 14:04 UTC [SEC Form POSASR filed by Arena Pharmaceuticals Inc.](https://www.quantisnow.com/insight/sec-form-posasr-filed-by-arena-pharmaceuticals-inc-2560680)
- 2022-03-11 14:01 UTC [SEC Form POS AM filed by Arena Pharmaceuticals Inc.](https://www.quantisnow.com/insight/sec-form-pos-am-filed-by-arena-pharmaceuticals-inc-2560658)
- 2022-03-11 14:01 UTC [SEC Form POS AM filed by Arena Pharmaceuticals Inc.](https://www.quantisnow.com/insight/sec-form-pos-am-filed-by-arena-pharmaceuticals-inc-2560657)
- 2022-03-11 14:01 UTC [SEC Form POS AM filed by Arena Pharmaceuticals Inc.](https://www.quantisnow.com/insight/sec-form-pos-am-filed-by-arena-pharmaceuticals-inc-2560656)
- 2022-03-11 14:01 UTC [SEC Form POS AM filed by Arena Pharmaceuticals Inc.](https://www.quantisnow.com/insight/sec-form-pos-am-filed-by-arena-pharmaceuticals-inc-2560653)
- 2022-03-11 13:58 UTC [SEC Form S-8 POS] [SEC Form S-8 POS filed by Arena Pharmaceuticals Inc.](https://www.quantisnow.com/insight/sec-form-s-8-pos-filed-by-arena-pharmaceuticals-inc-2560562)
- 2022-03-11 13:58 UTC [SEC Form S-8 POS] [SEC Form S-8 POS filed by Arena Pharmaceuticals Inc.](https://www.quantisnow.com/insight/sec-form-s-8-pos-filed-by-arena-pharmaceuticals-inc-2560561)
- 2022-03-11 13:58 UTC [SEC Form S-8 POS] [SEC Form S-8 POS filed by Arena Pharmaceuticals Inc.](https://www.quantisnow.com/insight/sec-form-s-8-pos-filed-by-arena-pharmaceuticals-inc-2560560)
- 2022-03-11 13:58 UTC [SEC Form S-8 POS] [SEC Form S-8 POS filed by Arena Pharmaceuticals Inc.](https://www.quantisnow.com/insight/sec-form-s-8-pos-filed-by-arena-pharmaceuticals-inc-2560558)
- 2022-03-11 13:58 UTC [SEC Form S-8 POS] [SEC Form S-8 POS filed by Arena Pharmaceuticals Inc.](https://www.quantisnow.com/insight/sec-form-s-8-pos-filed-by-arena-pharmaceuticals-inc-2560554)
- 2022-03-11 13:58 UTC [SEC Form S-8 POS] [SEC Form S-8 POS filed by Arena Pharmaceuticals Inc.](https://www.quantisnow.com/insight/sec-form-s-8-pos-filed-by-arena-pharmaceuticals-inc-2560553)
- 2022-03-11 13:58 UTC [SEC Form S-8 POS] [SEC Form S-8 POS filed by Arena Pharmaceuticals Inc.](https://www.quantisnow.com/insight/sec-form-s-8-pos-filed-by-arena-pharmaceuticals-inc-2560552)
- 2022-03-11 13:58 UTC [SEC Form S-8 POS] [SEC Form S-8 POS filed by Arena Pharmaceuticals Inc.](https://www.quantisnow.com/insight/sec-form-s-8-pos-filed-by-arena-pharmaceuticals-inc-2560551)
- 2022-03-11 13:58 UTC [SEC Form S-8 POS] [SEC Form S-8 POS filed by Arena Pharmaceuticals Inc.](https://www.quantisnow.com/insight/sec-form-s-8-pos-filed-by-arena-pharmaceuticals-inc-2560550)
- 2022-03-11 13:58 UTC [SEC Form S-8 POS] [SEC Form S-8 POS filed by Arena Pharmaceuticals Inc.](https://www.quantisnow.com/insight/sec-form-s-8-pos-filed-by-arena-pharmaceuticals-inc-2560549)
- 2022-03-11 13:57 UTC [SEC Form S-8 POS] [SEC Form S-8 POS filed by Arena Pharmaceuticals Inc.](https://www.quantisnow.com/insight/sec-form-s-8-pos-filed-by-arena-pharmaceuticals-inc-2560547)
- 2022-03-11 13:57 UTC [SEC Form S-8 POS] [SEC Form S-8 POS filed by Arena Pharmaceuticals Inc.](https://www.quantisnow.com/insight/sec-form-s-8-pos-filed-by-arena-pharmaceuticals-inc-2560546)

## More

- Live page with ratings, short volume, options and peers: https://www.quantisnow.com/company/ARNA
- Earnings history: https://www.quantisnow.com/earnings/ARNA
- Dividend history: https://www.quantisnow.com/dividends/ARNA
- Insider transactions: https://www.quantisnow.com/insiders/ARNA
- Options chain: https://www.quantisnow.com/options/ARNA
- SEC 8-K filings only: https://www.quantisnow.com/company/ARNA/8-k
- RSS and alerts for ARNA: https://www.quantisnow.com/docs/rss-feeds.md