republic-os/legislation/us/states/co/2025b/sb-4.md

type, title, description, jurisdiction, legislature, session, identifier, citation, classification, subjects, status, primary_sponsors, version_count, action_count, vote_count, first_action, last_action, source, source_identifier, source_url, source_hash, vintage, source_snapshot, retrieved_at, confidence, tags

type	title	description	jurisdiction	legislature	session	identifier	citation	classification	subjects	status	primary_sponsors	version_count	action_count	vote_count	first_action	last_action	source	source_identifier	source_url	source_hash	vintage	source_snapshot	retrieved_at	confidence	tags
Bill	Increase Transparency for Algorithmic Systems	In 2024, the general assembly enacted Senate Bill 24-205, which created consumer protections in interactions with artificial intelligence systems. The act extends the effective date of the requirements of Senate Bill 24-205 to June 30, 2026.APPROVED by Governor August 28, 2025EFFECTIVE November 25, 2025(Note: This summary applies to this bill as enacted.)	us/states/co	Colorado General Assembly	2025B	SB 4	Colorado SB 4 (2025B)	bill	Business & Economic Development Labor & Employment Telecommunications & Information Technology	enacted	J. Bacon R. Rodriguez	7	15	14	2025-08-21	2025-08-28	openstates	ocd-bill/f0d0ff0b-fa16-4f61-aebb-4c30d63d073b	https://leg.colorado.gov/bills/SB25B-004	c98496a74a6fcb6a2d57e2274a7596c5179f4b9cf66759da2785de012fd1d957	2026-07-01	https://data.openstates.org/daily/2026-07-01/public.pgdump	2026-07-06	reported	legislation bill us-co

Colorado SB 4 (2025B) — Increase Transparency for Algorithmic Systems

In 2024, the general assembly enacted Senate Bill 24-205, which created consumer protections in interactions with artificial intelligence systems. The act extends the effective date of the requirements of Senate Bill 24-205 to June 30, 2026.APPROVED by Governor August 28, 2025EFFECTIVE November 25, 2025(Note: This summary applies to this bill as enacted.)

Version chain

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

1. Introduced (filed) — source
2. Engrossed (committee substitute) — source
3. Final Act (committee substitute) — source
4. Reengrossed (committee substitute) — source
5. Rerevised (committee substitute) — source
6. Revised (committee substitute) — source
7. Signed Act (committee substitute) — source

Votes

• Adopt amendment L.018 — pass (pass) · upper
• Adopt amendment L.020 — pass (pass) · upper
• Adopt amendment J.006 — pass (pass) · upper
• BILL — pass (pass) · lower
• Adopt amendment L.005 — pass (pass) · upper
• Refer Senate Bill 25B-004, as amended, to the Committee of the Whole. — pass (pass) · upper
• Adopt amendment L.003 — pass (pass) · upper
• PERM — fail (fail) · lower
• Adopt amendment L.002 — pass (pass) · upper
• Refer Senate Bill 25B-004, as amended, to the Committee on Appropriations. — pass (pass) · upper
• Refer Senate Bill 25B-004, as amended, to the Committee of the Whole. — pass (pass) · upper
• Adopt amendment L.011 — pass (pass) · upper
• Adopt amendment L.040 — pass (pass) · upper
• Adopt amendment L.001 — pass (pass) · upper

Sponsors

• J. Bacon — primary (person)
• R. Rodriguez — primary (person)
• B. Kirkmeyer — cosponsor (person)
• B. Pelton — cosponsor (person)
• C. Espenoza — cosponsor (person)
• C. Simpson — cosponsor (person)
• J. Amabile — cosponsor (person)
• J. Coleman — cosponsor (person)
• J. Gonzales — cosponsor (person)
• J. Marchman — cosponsor (person)
• J. McCluskie — cosponsor (person)
• L. Frizell — cosponsor (person)
• M. Baisley — cosponsor (person)
• M. Ball — cosponsor (person)
• M. Carter — cosponsor (person)
• M. Duran — cosponsor (person)
• M. Snyder — cosponsor (person)
• R. Gonzalez — cosponsor (person)
• R. Pugliese — cosponsor (person)
• R. Taggart — cosponsor (person)
• S. Bird — cosponsor (person)
• T. Exum — cosponsor (person)
• W. Lindstedt — cosponsor (person)

Timeline

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

• 2025-08-28 Governor Signed executive-signature
• 2025-08-26 Sent to the Governor executive-receipt
• 2025-08-26 Signed by the Speaker of the House passage
• 2025-08-26 Signed by the President of the Senate passage
• 2025-08-26 Senate Considered House Amendments - Result was to Concur - Repass
• 2025-08-26 House Third Reading Passed - No Amendments passage, reading-3
• 2025-08-25 House Second Reading Special Order - Passed with Amendments - Committee
• 2025-08-25 House Committee on Appropriations Refer Amended to House Committee of the Whole committee-passage, referral-committee
• 2025-08-25 Introduced In House - Assigned to Appropriations introduction
• 2025-08-25 Senate Third Reading Passed with Amendments - Floor passage, reading-3
• 2025-08-24 Senate Second Reading Special Order - Passed with Amendments - Committee, Floor
• 2025-08-24 Senate Committee of the Whole Amendment - Change from Passed to Lost
• 2025-08-24 Senate Committee on Appropriations Refer Amended to Senate Committee of the Whole committee-passage, referral-committee
• 2025-08-21 Senate Committee on Business, Labor, & Technology Refer Amended to Appropriations referral-committee
• 2025-08-21 Introduced In Senate - Assigned to Business, Labor, & Technology introduction

Source

OpenStates / OpenCivicData bulk snapshot 2026-07-01; origin ocd-bill/f0d0ff0b-fa16-4f61-aebb-4c30d63d073b. Confidence: reported (aggregated from official Colorado legislature records).