# SENATE BILL 25B-004 (Colorado) — SECTION 4 — effective at 12:01 a.m. on the day following the expiration of the ninety-day period after final adjournment of the general assembly

For SENATE BILL 25B-004 (Colorado), provision stating the date is SECTION 4; effective date is at 12:01 a.m. on the day following the expiration of the ninety-day period after final adjournment of the general assembly; what it applies to is this act, which is the act that moves the part 17 compliance dates to June 30, 2026, recorded from its source on 2026-10-07; source re-checked 2026-10-15.

- **Jurisdiction:** Colorado _(our reading, not quoted from the source)_
- **Instrument:** SENATE BILL 25B-004 _(verified: appears in its own passage below)_
- **Provision stating the date:** SECTION 4 _(our reading, not quoted from the source)_
- **Effective date:** at 12:01 a.m. on the day following the expiration of the ninety-day period after final adjournment of the general assembly _(verified: appears in the quote below)_
- **What it applies to:** this act, which is the act that moves the part 17 compliance dates to June 30, 2026 _(our reading, not quoted from the source)_

## What the source says

> SECTION 4. Act subject to petition - effective date. This act takes effect at 12:01 a.m. on the day following the expiration of the ninety-day period after final adjournment of the general assembly; except that, if a referendum petition is filed pursuant to section 1 (3) of article V of the state constitution against this act or an item, section, or part of this act within such period, then the act, item, section, or part will not take effect unless approved by the people at the general election to be held in November 2026 and, in such case, will take effect on the date of the official declaration of the vote thereon by the governor.

## Where each value comes from

This source states these in separate places, so each value is shown with the passage that states it.

### Instrument

> SENATE BILL 25B-004

## Other dated provisions of this instrument

- [SENATE BILL 25B-004 (Colorado) — SECTION 1 — effective June 30, 2026](https://referencesource.org/ai-regulation-effective-dates/section-1-colorado-senate-bill-25b-004/)

## Source

- https://leg.colorado.gov/laws/session-laws/SB25B-004/3/download

Last verified: 2026-10-15. Review by: 2026-11-29.
Part of [AI law and regulation effective dates by jurisdiction](https://referencesource.org/ai-regulation-effective-dates/).