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Washington · 2025–26 Regular Sessions · Bill

SB 5594: Biosimilar medicines

Passed one chamber Official data

  1. Introduced
  2. In committee
  3. Passed one chamber
  4. Passed both chambers
  5. Enacted

Last official action: ·Record last updated:

Plain-language summary

SB 5594 is a bill introduced in the Washington Senate on January 30, 2025. According to its official title, it concerns: Concerning biosimilar medicines. (REVISED FOR ENGROSSED: Concerning biosimilar medicines and interchangeable biological products.). Primary sponsor: Paul Harris (R). It lists 3 additional sponsors. Most recent recorded action (March 12, 2026): By resolution, returned to Senate Rules Committee for third reading.

Generated automatically from the official title, sponsor list, and status record only. It does not characterize the bill’s purpose or effects. How summaries are written

Official title

AN ACT Relating to reducing prescription drug costs by eliminating barriers impeding access to biosimilar medicines and interchangeable biological products;

Nonpartisan staff bill reports (analyses) are available on the official bill page.

Sponsors

Sponsors by party (alphabetical): Democratic 3 · Republican 1

NameRolePartyChamberDistrict
Paul HarrisPrimary sponsorRepublicanSenate17
Annette ClevelandCo-sponsorDemocraticSenate49
Bob HasegawaCo-sponsorDemocraticSenate11
Sharon ShewmakeCo-sponsorDemocraticSenate42

“Support” is shown only as formal sponsorship recorded by the legislature. Roll-call votes are available on the official bill page.

Recent official actions

  1. By resolution, returned to Senate Rules Committee for third reading.
  2. HCW - Majority; do pass.
  3. Referred to Rules 2 Review.
  4. HCW - Executive action taken by committee.
  5. First reading, referred to Health Care & Wellness.
  6. Rules suspended.
  7. Returned to second reading for amendment.
  8. Floor amendment(s) adopted.
  9. Rules suspended. Placed on Third Reading.
  10. Third reading, passed; yeas, 49; nays, 0; absent, 0; excused, 0.
  11. Rules Committee relieved of further consideration.
  12. Placed on third reading.

Showing 12 most recent of 23 actions. Full history

Sources

  1. Washington State Legislature Web Services
  2. Official bill page