What SEC filings does System1, Inc. submit to the SEC?

System1, Inc. (SST) submits several types of SEC filings including Form 4 (insider transactions), Form 144 (proposed insider sales), 8-K reports (material events such as earnings releases, acquisitions, leadership changes), and periodic reports — the 10-Q (quarterly) and 10-K (annual). All filings are publicly available through SEC EDGAR.

What does a Form 4 filing tell me about SST?

A Form 4 for SST discloses a transaction by a company insider — typically a director, officer, or 10%+ shareholder. It shows the source-reported date, number of shares, price, and updated ownership. These facts do not establish motive or predict future returns.

How do I interpret an 8-K filing from System1, Inc.?

An 8-K signals a material event requiring prompt disclosure. Common triggers include earnings pre-announcements, acquisitions, leadership appointments or departures, credit changes, or regulatory actions. Read the item codes inside the filing to understand exactly what was disclosed before drawing conclusions.

What is the difference between a 10-K and 10-Q for SST?

The 10-K is System1, Inc.'s annual report with fully audited financial statements, comprehensive MD&A, and complete risk factor disclosures — filed 60–90 days after fiscal year-end. The 10-Q is a lighter quarterly report with unaudited financials filed for the first three quarters. Together they provide a continuous financial picture of the company.

Where can I see all SST SEC filings directly on EDGAR?

You can view all historical System1, Inc. filings on the SEC EDGAR company page for SST. Each filing card on this page links directly to the original SEC document.

How often does System1, Inc. file with the SEC?

System1, Inc. files one 10-K per year and up to three 10-Qs per year. Form 4 insider transactions must be reported within two business days of each trade, so the frequency depends on how often insiders are buying or selling SST shares. 8-K filings occur whenever a material event happens — which can be several times per quarter for an active company.

SST SEC Filing News — System1, Inc.

Latest SEC filings for System1, Inc. (SST) explained in plain English. Covers insider buying and selling (Form 4), proposed insider sales (Form 144), material company events (8-K), and quarterly & annual reports (10-Q / 10-K). StrongBuyAnalytics provides navigation and brief excerpts or summaries; original filings remain at the SEC/source links and were authored by their filers, not StrongBuyAnalytics. Filing dates shown are source dates. Coverage and detection can be delayed or incomplete because of SEC availability, amendments, parsing, caching, or outages. Latest source filing date shown: 2026-08-05.

System1, Inc. provides omnichannel customer acquisition platform services through its proprietary responsive acquisition marketing platform in the United States and internationally. It operates in two segments: Owned and Operated Advertising, and Partner Network. The company engages in the provision of acquiring traffic to its owned and operated websites, as well as revenue-sharing arrangements and related services. It also operates MapQuest, a web-based navigation service that delivers turn-by-…

Sector: Industrials Industry: Specialty Business Services Market Cap: $17.8M CIK: 1805833

Total Filings

Bullish Classifications

Bearish Classifications

Insider Transactions

Material Events (8-K)

Periodic Reports

Rule-based classifications for SST currently lean bullish. Of the 20 displayed SEC filing records, 1 carry bullish classifications versus 0 bearish classifications. These labels summarize filing attributes; they are not recommendations, probabilities, or evidence of future price direction. There were 9 insider transactions (Form 4) in this period.

SST Filing Activity Snapshot 2026-03-11 — 2026-08-05

Insider Transactions (Form 4)

1 buy vs 0 sells

Net insider buying in this period — more purchases than sales reported.

Largest Form 144 Filing

$80.7K

Kidambi Tridivesh (Chief Financial Officer) · 2026-04-17

26,910 shares · Form 4

Insider Transactions 9 · Forms 3, 4 and 5

A Form 4 is filed within two business days of a company insider — an officer, a director, or a holder of more than ten percent of the stock — changing their position in the shares. All 9 filings in this group are Form 4s for System1, Inc.

The difficulty with reading these filings as a group is that a single form type covers transactions that mean entirely different things. An executive spending their own money to buy stock and an executive having shares withheld to pay tax on a vesting grant both appear as a Form 4. Every filing below is therefore tagged with the nature of the underlying transaction, taken from the transaction code reported on the form itself.

Across the 9 insider filings shown, the breakdown is 7 tax withholding, 1 compensation award and 1 open-market purchase. 1 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.

What each transaction type means

Tax withholding ×7: Shares were withheld by the company to settle tax due when equity vested. This is an automatic administrative step and not a decision to sell.
Compensation award ×1: Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Open-market purchase ×1: The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.

Form 4 Tax withholding Tax / Compensation Filing 2026-07-17

SST insider Form 4 filed for equity award, exercise, or tax withholding

Sestanovich Elizabeth (Chief People Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were withheld by the company to settle tax due when equity vested. This is an automatic administrative step and not a decision to sell.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`F`	Tax withholding on vested shares	7,058	$2.60	$18.4K

Filing: Form 4 (Insider Transaction) Insider: Sestanovich Elizabeth (Chief People Officer) Shares: 7,058

View on SEC EDGAR → Open Filing Document →

Form 4 Tax withholding Tax / Compensation Filing 2026-07-17

SST insider Form 4 filed for equity award, exercise, or tax withholding

Coppola Brian (Chief Ad Operations Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were withheld by the company to settle tax due when equity vested. This is an automatic administrative step and not a decision to sell.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`F`	Tax withholding on vested shares	6,124	$2.60	$15.9K

Filing: Form 4 (Insider Transaction) Insider: Coppola Brian (Chief Ad Operations Officer) Shares: 6,124

View on SEC EDGAR → Open Filing Document →

Form 4 Tax withholding Tax / Compensation Filing 2026-07-17

SST insider Form 4 filed for equity award, exercise, or tax withholding

Kidambi Tridivesh (Chief Financial Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were withheld by the company to settle tax due when equity vested. This is an automatic administrative step and not a decision to sell.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`F`	Tax withholding on vested shares	6,022	$2.60	$15.7K

Filing: Form 4 (Insider Transaction) Insider: Kidambi Tridivesh (Chief Financial Officer) Shares: 6,022

View on SEC EDGAR → Open Filing Document →

Form 4 Tax withholding Tax / Compensation Filing 2026-07-17

SST insider Form 4 filed for equity award, exercise, or tax withholding

Weinrot Daniel J (General Counsel & Secretary) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were withheld by the company to settle tax due when equity vested. This is an automatic administrative step and not a decision to sell.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`F`	Tax withholding on vested shares	9,156	$2.60	$23.8K

Filing: Form 4 (Insider Transaction) Insider: Weinrot Daniel J (General Counsel & Secretary) Shares: 9,156

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-02

SST insider Form 4 filed for equity award, exercise, or tax withholding

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	35,300	—	—

Filing: Form 4 (Insider Transaction) Insider: Kidambi Tridivesh (Chief Financial Officer) Shares: 35,300

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market purchase Insider Buying 2026-04-17

SST insider Kidambi Tridivesh (Chief Financial Officer) bought 26,910 shares (~$80.7K)

Kidambi Tridivesh, listed as Chief Financial Officer at System1, Inc., reported an open-market purchase of 26,910 SST shares in a Form 4 filing. Insider buying is often treated as a bullish signal because company insiders are committing their own capital.

The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`P`	Open-market purchase	26,910	$3.00	$80.7K
`F`	Tax withholding on vested shares	301	$2.26	$680.26

Filing: Form 4 (Insider Transaction) Insider: Kidambi Tridivesh (Chief Financial Officer) Shares: 26,910 Est. Value: $80.7K

View on SEC EDGAR → Open Filing Document →

Form 4 Tax withholding Tax / Compensation Filing 2026-04-17

SST insider Form 4 filed for equity award, exercise, or tax withholding

Shares were withheld by the company to settle tax due when equity vested. This is an automatic administrative step and not a decision to sell.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`F`	Tax withholding on vested shares	341	$2.26	$770.66

Filing: Form 4 (Insider Transaction) Insider: Sestanovich Elizabeth (Chief People Officer) Shares: 341

View on SEC EDGAR → Open Filing Document →

Form 4 Tax withholding Tax / Compensation Filing 2026-04-17

SST insider Form 4 filed for equity award, exercise, or tax withholding

Shares were withheld by the company to settle tax due when equity vested. This is an automatic administrative step and not a decision to sell.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`F`	Tax withholding on vested shares	331	$2.26	$748.06

Filing: Form 4 (Insider Transaction) Insider: Coppola Brian (Chief Ad Operations Officer) Shares: 331

View on SEC EDGAR → Open Filing Document →

Form 4 Tax withholding Tax / Compensation Filing 2026-04-17

SST insider Form 4 filed for equity award, exercise, or tax withholding

Shares were withheld by the company to settle tax due when equity vested. This is an automatic administrative step and not a decision to sell.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`F`	Tax withholding on vested shares	341	$2.26	$770.66

Filing: Form 4 (Insider Transaction) Insider: Weinrot Daniel J (General Counsel & Secretary) Shares: 341

View on SEC EDGAR → Open Filing Document →

Material Events 7 · Form 8-K

An 8-K reports a material event in the window between scheduled reports. There are 7 in this period for System1, Inc. Each 8-K names the item number it is filed under, and that number is the fastest way to tell a routine disclosure from a consequential one.

Item 2.02 is an earnings release, Item 5.02 is a change of directors or officers, and Item 1.01 or 2.01 covers a material agreement or a completed acquisition. Item 7.01 and Item 8.01 are the general-purpose disclosure items and carry no fixed meaning on their own.

Form 8-K Material Company Update 2026-08-05