---
type: "Bill"
title: "Research Facilities and Testing Facilities That Use Animals - Prohibitions and Adoption Requirements (Animal Research Modernization and Best Practices Act of 2026)"
description: "Research Facilities and Testing Facilities That Use Animals - Prohibitions and Adoption Requirements (Animal Research Modernization and Best Practices Act of 2026)"
jurisdiction: "us/states/md"
legislature: "Maryland General Assembly"
session: "2026"
identifier: "SB 423"
citation: "Maryland SB 423 (2026)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Kramer"]
version_count: 3
action_count: 13
vote_count: 2
first_action: "2026-01-30"
last_action: "2026-04-28"
source: "openstates"
source_identifier: "ocd-bill/cdc49f89-9ed3-429a-a2d6-8577106f800f"
source_url: "http://mgaleg.maryland.gov/mgawebsite/Legislation/Details/sb0423?ys=2026RS"
source_hash: "960034fab8c7053e0b431eb236bbcc34bfa56d4bf1b1a6acebfb8d46c9d495d3"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-md"]
---

# Maryland SB 423 (2026) — Research Facilities and Testing Facilities That Use Animals - Prohibitions and Adoption Requirements (Animal Research Modernization and Best Practices Act of 2026)

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **Chapter - Research Facilities and Testing Facilities That Use Animals - Prohibitions and Adoption Requirements (Animal Research Modernization and Best Practices Act of 2026)** (committee substitute) — [source](http://mgaleg.maryland.gov/2026RS/Chapters_noln/CH_230_sb0423t.pdf)
2. **First - Research Facilities and Testing Facilities That Use Animals - Prohibitions and Adoption Requirements (Animal Research Modernization and Best Practices Act of 2026)** (committee substitute) — [source](http://mgaleg.maryland.gov/2026RS/bills/sb/sb0423f.pdf)
3. **Third - Research Facilities and Testing Facilities That Use Animals - Prohibitions and Adoption Requirements (Animal Research Modernization and Best Practices Act of 2026)** (committee substitute) — [source](http://mgaleg.maryland.gov/2026RS/bills/sb/sb0423t.pdf)

## Votes

- On Third Reading — **45–0** (pass) · upper
- On Third Reading — **122–13** (pass) · lower

## Sponsors

- Kramer — primary (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2026-01-30** First Reading Education, Energy, and the Environment `referral-committee`
- **2026-02-09** Hearing 2/17 at 1:00 p.m.
- **2026-03-16** Favorable with Amendments Report by Education, Energy, and the Environment `committee-passage-favorable`
- **2026-03-18** Favorable with Amendments { `committee-passage-favorable`
- **2026-03-18** Second Reading Passed with Amendments
- **2026-03-19** Third Reading Passed `passage`
- **2026-03-20** Referred Environment and Transportation `referral-committee`
- **2026-03-25** Hearing 4/01 at 1:00 p.m.
- **2026-04-08** Favorable Report by Environment and Transportation `committee-passage-favorable`
- **2026-04-09** Favorable Adopted Second Reading Passed `committee-passage-favorable`
- **2026-04-13** Third Reading Passed `passage`
- **2026-04-13** Returned Passed
- **2026-04-28** Approved by the Governor - Chapter 230 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/cdc49f89-9ed3-429a-a2d6-8577106f800f`. Confidence: reported (aggregated from official Maryland legislature records).