SB 4 Connecticut Senate · 2026 Regular Session

AN ACT CONCERNING CONSUMER PRIVACY AND PROTECTION.

SB 4 establishes a data broker registration system in Connecticut, requiring businesses that sell or license personal data to register with the Department of Consumer Protection by October 1, 2026. It directly affects data brokers (businesses collecting and selling personal data) and Connecticut consumers, who gain new rights to request data deletion. Key provisions include mandatory $600 annual registration fees, a requirement for data brokers to provide an "accessible deletion mechanism" for consumer requests, and definitions clarifying terms like "brokered personal data." The law aims to increase transparency and control over personal data handling while imposing specific compliance obligations on data brokers.
Bill status signed all 5 stages cleared
Introduction
Feb 2026
Committee Review
Apr 2026
Senate Passage
Apr 2026
House Passage
May 2026
Signed into Law
May 2026
Introduced Feb 4, 2026 Signed May 27, 2026
Maddy AI version diff · 2 comparisons

What changed between versions

Committee Bill GL Joint Favorable Substitute · 10 edits
MAJOR
The substitute bill makes several substantive changes to Connecticut's consumer privacy and data broker registration law. Most significantly, it shifts the responsibility for verifying deletion requests from individual data brokers to the Commissioner of Consumer Protection, streamlining the process for data brokers. It also narrows the definition of 'brokered personal data' to require that a data broker obtained the data from a third party, modifies exemptions and safe harbors for unregistered data brokers, and adds a new exemption for businesses collecting data related to listed chemical regulation.
DEFINITION

The definition of 'brokered personal data' now requires that a data broker 'obtains from a third party' before categorizing or organizing the data. This narrows the scope by excluding data brokers who generate or collect their own data rather than obtaining it from another source.

The definition of 'participating consumer' now requires a 'verified deletion request' rather than simply a 'deletion request.' Only consumers whose requests are verified by the Commissioner become participating consumers, which affects when data brokers must delete versus retain data.

TIMELINE

Section 2(a) now explicitly states that the registration requirement applies 'on or after January 1, 2027,' clarifying that while the section takes effect October 1, 2026, the actual prohibition on unregistered sales begins January 1, 2027.

REQUIREMENT

The application disclosure requirement in Section 2(c)(1) now requires 'an actively monitored electronic mail address and telephone number' rather than just an email address and phone number, ensuring data brokers maintain reachable contact information.

Section 2(c)(4) changed the conjunction from 'and' to 'or' between collecting minors' personal data and collecting precise geolocation or reproductive/sexual health data. Data brokers must now disclose if they collect either type, not both.

ENFORCEMENT

The deletion mechanism in Section 5 was substantially restructured. Verification of deletion requests is now performed by the Commissioner of Consumer Protection (or authorized agent) rather than by each individual data broker. If the Commissioner cannot verify a request, all non-excluded data brokers may retain the consumer's data but must process it as an exercise of the consumer's opt-out right under section 42-518(a)(5)(B). Data brokers now only need to check whether they are specifically excluded from verified requests.

SCOPE

The exemption in Section 7(a)(3) for businesses with existing consumer relationships was narrowed. The broad 'customer, subscriber or user of goods or services' language was removed and replaced with a focus on contractual relationships, investors, donors, and similar relationships. The phrase 'is or was' was added, extending the exemption to past relationships.

A new exemption was added in Section 7(a)(5) for 'a business collecting data used for purposes of the regulation of listed chemicals as set forth in 21 USC 830,' exempting certain chemical safety and regulatory data collection from the act.

The safe harbor for unregistered data brokers in Section 7(b) was significantly modified. Publicly available information, government records, and health/safety alert services are now combined into a single category, but with important carve-outs: the safe harbor does NOT apply if such information is 'collated and combined to create a consumer profile' made available on a publicly accessible website (for compensation or free), or if it is 'used to generate inferences with respect to consumers.' This closes a potential loophole where data brokers could aggregate public records into consumer profiles without registering.

TECHNICAL

The bill title was changed from 'AN ACT CONCERNING CONSUMER PRIVACY' to 'AN ACT CONCERNING CONSUMER PRIVACY AND PROTECTION,' reflecting the broader protective scope of the legislation.

Floor votes · Senate Apr 23, 2026 · House May 4, 2026

How they voted

314
Passed · 1 other
Total votes 36
Apr 23, 2026
D Democratic25
24 Yea 1
96% Yea
R Republican11
7 Yea 4 Nay
63% Yea
Vote distribution
All Yea All Nay Mixed No data
Full legislative history

Actions timeline

Total actions
37
Key actions
10
Committee
7
Amendments
2
May 27, 2026
Signed into law
SIGNED BY GOVERNOR
upper
May 4, 2026
Lower · Passed
HOUSE PASSED, SEN. AMEND. SCH. A
lower
May 4, 2026
Lower · Passed
HOUSE ADOPTED SEN. AMEND. SCH. A
lower
Apr 23, 2026
Upper · Passed
SEN. PASSED, SEN. AMEND. SCH. A
upper
Apr 23, 2026
Upper · Passed
SEN. ADOPTED SEN. AMEND. SCH. A
upper
Apr 17, 2026
Upper · Passed
Joint Favorable
upper
Apr 15, 2026
Upper · Passed
IMMEDIATE TRANSMITTAL TO COMMITTEE
upper
Apr 10, 2026
Upper · Passed
Joint Favorable
upper
Mar 16, 2026
Upper · Passed
Joint Favorable Substitute
upper
Feb 26, 2026
Committee
REF. TO JOINT COMM. ON General Law
upper
Feb 25, 2026
Upper · Passed
DRAFTED BY COMMITTEE
upper
Feb 4, 2026
Committee
REF. TO JOINT COMM. ON General Law
upper
59 primary · 0 co-sponsors

Sponsors

Role
Legislator
Party
State
District
P
Photo of Anne Hughes
Anne Hughes
DDemocratic
CT
135
P
Photo of Anthony Nolan
Anthony Nolan
DDemocratic
CT
39
P
Photo of Bill Heffernan
Bill Heffernan
DDemocratic
CT
115
P
Photo of Bob Duff
Bob Duff
DDemocratic
CT
25
P
Photo of Bob Godfrey
Bob Godfrey
DDemocratic
CT
110
P
Photo of Brandon Chafee
Brandon Chafee
DDemocratic/Working Families
CT
33
P
Photo of Cathy Osten
Cathy Osten
DDemocratic
CT
19
P
Photo of Ceci Maher
Ceci Maher
DDemocratic
CT
26
P
Photo of Christine Cohen
Christine Cohen
DDemocratic
CT
12
P
Photo of Cristin McCarthy Vahey
Cristin McCarthy Vahey
DDemocratic
CT
133
P
Photo of Dan Gaiewski
Dan Gaiewski
DDemocratic
CT
40
P
Photo of Derek Slap
Derek Slap
DDemocratic
CT
5
P
Photo of Dominique Johnson
Dominique Johnson
DDemocratic/Working Families
CT
143
P
Photo of Doug McCrory
Doug McCrory
DDemocratic
CT
2
P
Photo of Eilish Collins Main
Eilish Collins Main
DDemocratic
CT
146
P
Photo of Farley Santos
Farley Santos
DDemocratic
CT
109
P
Photo of Gregg Haddad
Gregg Haddad
DDemocratic
CT
54
P
Photo of Herron Gaston
Herron Gaston
DDemocratic
CT
23
P
Photo of Hubert Delany
Hubert Delany
DDemocratic
CT
144
P
Photo of James Maroney
James Maroney
DDemocratic
CT
14
P
Photo of Jan Hochadel
Jan Hochadel
DDemocratic/Working Families
CT
13
P
Photo of Jenn Leeper
Jenn Leeper
DDemocratic/Working Families
CT
132
P
JS
Jimmy Sánchez
DDemocratic
CT
6
P
Photo of Joan Hartley
Joan Hartley
DDemocratic
CT
15
P
Photo of John-Michael Parker
John-Michael Parker
DDemocratic
CT
101
P
Photo of Jorge Cabrera
Jorge Cabrera
DDemocratic
CT
17
P
Photo of Josh Elliott
Josh Elliott
DDemocratic
CT
88
P
Photo of Julie Kushner
Julie Kushner
DDemocratic
CT
24
P
Photo of Kaitlyn Shake
Kaitlyn Shake
DDemocratic/Working Families
CT
120
P
Photo of Kara Rochelle
Kara Rochelle
DDemocratic
CT
104
P
Photo of Kate Farrar
Kate Farrar
DDemocratic/Working Families
CT
20
P
Photo of Ken Gucker
Ken Gucker
DDemocratic/Working Families
CT
138
P
Photo of Larry Pemberton
Larry Pemberton
DDemocratic
CT
139
P
Photo of Laurie Sweet
Laurie Sweet
DDemocratic/Working Families
CT
91
P
Photo of Lucy Dathan
Lucy Dathan
DDemocratic
CT
142
P
Photo of M.D. Rahman
M.D. Rahman
DDemocratic/Working Families
CT
4
P
Photo of M.J. Shannon
M.J. Shannon
DDemocratic
CT
117
P
Photo of Mae Flexer
Mae Flexer
DDemocratic
CT
29
P
Photo of Marcus Brown
Marcus Brown
DDemocratic
CT
127
P
Photo of Martha Marx
Martha Marx
DDemocratic/Working Families
CT
20
P
Photo of Martin Looney
Martin Looney
DDemocratic
CT
11
P
Photo of Marty Foncello
Marty Foncello
RRepublican
CT
107
P
Photo of Mary Welander
Mary Welander
DDemocratic/Working Families
CT
114
P
Photo of Matt Lesser
Matt Lesser
DDemocratic
CT
9
P
Photo of Nick Gauthier
Nick Gauthier
DDemocratic
CT
38
P
Photo of Nick Menapace
Nick Menapace
DDemocratic/Working Families
CT
37
P
Photo of Norm Needleman
Norm Needleman
DDemocratic
CT
33
P
Photo of Pat Miller
Pat Miller
DDemocratic
CT
27
P
Photo of Paul Honig
Paul Honig
DDemocratic/Working Families
CT
8
P
Photo of Rebecca Martinez
Rebecca Martinez
DDemocratic
CT
22
P
Photo of Renee Muir
Renee Muir
DDemocratic
CT
36
P
Photo of Rick Lopes
Rick Lopes
DDemocratic
CT
6
P
Photo of Roland Lemar
Roland Lemar
DDemocratic
CT
96
P
Photo of Sarah Keitt
Sarah Keitt
DDemocratic
CT
134
P
Photo of Saud Anwar
Saud Anwar
DDemocratic
CT
3
P
Photo of Savet Constantine
Savet Constantine
DDemocratic
CT
42
P
Photo of Sujata Gadkar-Wilcox
Sujata Gadkar-Wilcox
DDemocratic
CT
22
P
Photo of Tom Delnicki
Tom Delnicki
RRepublican
CT
14
P
Photo of Travis Simms
Travis Simms
DDemocratic
CT
140