# Aptevo Therapeutics Provides a 1Q26 Business Update; RAINIER on Track for 2026 Completion and Phase 2 Dose Selection
Canonical URL: https://biopharmsignal.com/news/APVO/aptevo-therapeutics-provides-a-1q26-business-update-rainier-on-track-for-2026-completion-and-phase-2-dose-selection
Ticker: APVO
Company: Aptevo Therapeutics
Source: Aptevo Therapeutics
Published: 2026-05-13 12:05 EST
Original Source URL: https://aptevotherapeutics.gcs-web.com
## Summary

Mipletamig continues to perform, delivers 87% clinical benefit and 81% remission in frontline AML, with no CRS in frontline patients Executive leadership transition complete. Jeff Lamothe appointed CEO; Marvin White assumes Executive Chair $60 million equity line of credit enhances financial

## Article Body
Mipletamig continues to perform, delivers 87% clinical benefit and 81% remission in frontline AML, with no CRS in frontline patients Executive leadership transition complete. Jeff Lamothe appointed CEO; Marvin White assumes Executive Chair $60 million equity line of credit enhances financial
## Recent Company News
- 2026-05-28 12:05 EST — [Aptevo Therapeutics Appoints Mary J. Janatpour, Ph.D., as Senior Vice President & Chief Scientific Officer](https://biopharmsignal.com/news/APVO/aptevo-therapeutics-appoints-mary-j-janatpour-ph-d-as-senior-vice-president-and-chief-scientific-officer) — Source: Aptevo Therapeutics
- 2026-05-27 12:05 EST — [Aptevo and Niowave Launch Strategic Collaboration for Radiopharmaceutical Therapeutic Development, Includes Strategic Equity Investment by Niowave at Closing](https://biopharmsignal.com/news/APVO/aptevo-and-niowave-launch-strategic-collaboration-for-radiopharmaceutical-therapeutic-development-includes-strategic-equity-investment-by-niowave-at-closing) — Source: Aptevo Therapeutics
- 2026-05-13 12:05 EST — [Aptevo Therapeutics Provides a 1Q26 Business Update; RAINIER on Track for 2026 Completion and Phase 2 Dose Selection](https://biopharmsignal.com/news/APVO/aptevo-therapeutics-provides-a-1q26-business-update-rainier-on-track-for-2026-completion-and-phase-2-dose-selection) — Source: Aptevo Therapeutics
- 2026-05-06 12:05 EST — [Aptevo Reports 87% Clinical Benefit and 81% Remission in 31 Evaluable Frontline AML Patients Through Cohort 5, Substantially Outperforming Benchmark; RAINIER on Track for 2026 Completion and Phase 2 Dose Selection](https://biopharmsignal.com/news/APVO/aptevo-reports-87-clinical-benefit-and-81-remission-in-31-evaluable-frontline-aml-patients-through-cohort-5-substantially-outperforming-benchmark-rainier-on-track-for-2026-completion-and-phase-2-dose-selection) — Source: Aptevo Therapeutics
- 2026-03-26 12:05 EST — [Aptevo Provides State of the Business Report and 2025 Financial Results](https://biopharmsignal.com/news/APVO/aptevo-provides-state-of-the-business-report-and-2025-financial-results) — Source: Aptevo Therapeutics
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