Skip to content
Baker Capital StrategiesMARKETS. FILINGS. PERSPECTIVE.
Powered by THEMA

BAKER CAPITAL STRATEGIES

Get the free weekly BCS email.

Selected company filings and market updates, delivered by email. Your first report will follow soon.

  • Your weekly BCS reportMarket updates and links to filings you can explore.
  • THEMA at launchWe’ll send directions for setting up your filing alerts when THEMA officially opens.

One signup for the weekly email and your free THEMA Basic account at launch.

Already registered or a CSW member?Log in to THEMA →

At least 8 characters. This also creates your free THEMA account for launch.

You’re signing up for the weekly BCS email and THEMA launch/setup updates. Unsubscribe using the link in any email. Privacy policy · Terms

BCS

Changes in Beneficial Ownership · 4

System1, Inc.

SSTNYSEEQUITYCurrent

Changes in Beneficial Ownership

Filed Jul 17, 2026Accepted Jul 17, 2026, 6:07 PM EDTFiling CIK 1805833Accession 0001628280-26-048712
Share

Structured filing — 4

wk-form4_1784326022.xml

Open full document ↗

Filing details

Report period
2026-07-15
Issuer
System1, Inc.
Issuer CIK
0001805833
Trading symbol
SST

Reporting owner 1

Name
Weinrot Daniel J
Reporting owner CIK
0001624457
Relationship
Officer
Officer title
General Counsel & Secretary
Address
4235 REDWOOD AVE, LOS ANGELES, CA, 90066

Non-derivative transactions

Non-derivative transactions · 1 reported row
SecurityTransaction dateCodeAmountA / DPrice (USD)Owned afterOwnership
Class A Common Stock2026-07-15F · Form 49,156[F1]D2.6059,897[F2]D
Table key
F · Form 4
Securities delivered or withheld for exercise price or tax liability under Rule 16b-3
D
Direct

Footnotes

F1
Upon the vesting of 17,995 restricted stock units ("RSUs") previously granted to the reporting person, the Company withheld 9,156 shares to cover the reporting person's tax withholding obligation with respect to the vesting of such RSUs.↩ 1
F2
Includes 36,515 unvested RSUs.↩ 1

Signature 1

Signed
/s/ Daniel J Weinrot
Date
2026-07-17

Company context

System1 operates several flagship brands across multiple consumer verticals, including shopping, travel and search, and a best-in-class customer acquisition and marketing platform powered by AI and machine learning. The Company's platform is omnichannel and omnivertical, delivering high-intent customers to its advertising partners to maximize their reach and effectiveness. For more information, visit www.system1.com.

Current securities

Historical securities (4)

Recent company filings

  1. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory ArrangementsOct 30, 2026
  2. EFFECT filingAug 6, 2026
  3. Regulation FD DisclosureAug 5, 2026
  4. 10-Q filingAug 5, 2026
  5. Results of Operations and Financial ConditionAug 5, 2026

Privacy choices

BCS measures page use with Google Analytics using regional consent settings. You can change your preference here. Charts and market data remain available.

Essential functions — always available. Security, navigation, registration and remembering these choices.

Audience analytics

Analytics cookies are off by default for visitors Google identifies in the EEA, UK or Switzerland until allowed. Limited measurement without analytics cookies may still occur under those regional defaults.

TradingView charts, quotes and the economic calendar load automatically as page content. TradingView receives network and browser information and may collect its own usage analytics. This choice controls BCS’s Google Analytics only.

Google advertising is not enabled. Direct sponsor links do not load advertising trackers on BCS.

Turning analytics off stops future Google Analytics activity here. It does not erase information already received by the provider. Read the privacy policy.