What SEC filings does Sterling Infrastructure, Inc. submit to the SEC?

Sterling Infrastructure, Inc. (STRL) 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 STRL?

A Form 4 for STRL 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 Sterling Infrastructure, 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 STRL?

The 10-K is Sterling Infrastructure, 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 STRL SEC filings directly on EDGAR?

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

How often does Sterling Infrastructure, Inc. file with the SEC?

Sterling Infrastructure, 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 STRL shares. 8-K filings occur whenever a material event happens — which can be several times per quarter for an active company.

STRL SEC Filing News — Sterling Infrastructure, Inc.

Latest SEC filings for Sterling Infrastructure, Inc. (STRL) 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: 2026-10-07.

Sterling Infrastructure, Inc. engages in the provision of e-infrastructure, transportation, and building solutions in the United States. It operates through three segments: E-Infrastructure, Transportation, and Building Solutions. The E-Infrastructure Solutions segment provides site development services for the blue-chip end users in the e-commerce distribution center, data center, manufacturing, warehousing, and power generation sectors. Its Transportation Solutions segment is involved in the d…

Sector: Industrials Industry: Engineering & Construction Market Cap: $13.2B CIK: 874238

Total Filings

Bullish Classifications

Bearish Classifications

Insider Transactions

Material Events (8-K)

Periodic Reports

Rule-based classifications for STRL currently lean bearish. Of the 20 filing records displayed, 1 carry bearish classifications (such as insider sales or negative 8-K disclosures) versus 0 bullish. This does not necessarily signal fundamental deterioration — insiders sell for many reasons — but it is worth monitoring alongside the company's core financial metrics.

STRL Filing Activity Snapshot 2026-05-11 — 2026-10-07

Insider Transactions (Form 4)

0 buys vs 1 sell

Net insider selling in this period — insiders sell for many reasons beyond conviction.

Largest Form 144 Filing

$2.22M

Wolf Mark D. (General Counsel, Corporate Sec) · 2026-06-29

2,500 shares · Form 4

Form 144 Notices

Proposed insider sale filed — Form 144 is a notice of intent, not a confirmed transaction. Actual sales are confirmed via Form 4.

Insider Transactions 11 · 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 11 filings in this group are Form 4s for Sterling Infrastructure, 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 11 insider filings shown, the breakdown is 6 compensation award, 2 gift, 2 tax withholding and 1 open-market sale. 1 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.

What each transaction type means

Compensation award ×6: 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.
Gift ×2: Shares were transferred as a gift, typically for estate or charitable planning. No sale into the market took place.
Tax withholding ×2: 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.
Open-market sale ×1: The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Form 4 Compensation award Tax / Compensation Filing 2026-10-07

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

Hargis Katherine (General Counsel & CCO) 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 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	1,000	—	—
`A`	Compensation award	87	—	—

Filing: Form 4 (Insider Transaction) Insider: Hargis Katherine (General Counsel & CCO) Shares: 1,087

View on SEC EDGAR → Open Filing Document →

Form 4 Gift Tax / Compensation Filing 2026-09-23

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

CUTILLO JOSEPH A (Director, Chief Executive 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 transferred as a gift, typically for estate or charitable planning. No sale into the market took place.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`G`	Gift	40,000	—	—

Filing: Form 4 (Insider Transaction) Insider: CUTILLO JOSEPH A (Director, Chief Executive Officer) Shares: 40,000

View on SEC EDGAR → Open Filing Document →

Form 4 Tax withholding Tax / Compensation Filing 2026-08-10

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

Govin Daniel P. (Chief Operating Officer (COO)) 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	6,559	$536.08	$3.52M

Filing: Form 4 (Insider Transaction) Insider: Govin Daniel P. (Chief Operating Officer (COO)) Shares: 6,559

View on SEC EDGAR → Open Filing Document →

Form 4 Tax withholding Tax / Compensation Filing 2026-07-14

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

GRINDSTAFF NICHOLAS M (Chief Financial Officer (CFO)) 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	556	$682.29	$379.4K

Filing: Form 4 (Insider Transaction) Insider: GRINDSTAFF NICHOLAS M (Chief Financial Officer (CFO)) Shares: 556

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-06-29

STRL insider Wolf Mark D. (General Counsel, Corporate Sec) sold 2,500 shares (~$2.22M)

Wolf Mark D., listed as General Counsel, Corporate Sec at STERLING INFRASTRUCTURE, INC., reported an open-market sale of 2,500 STRL shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`S`	Open-market sale	2,500	$888.00	$2.22M

Filing: Form 4 (Insider Transaction) Insider: Wolf Mark D. (General Counsel, Corporate Sec) Shares: 2,500 Est. Value: $2.22M

View on SEC EDGAR → Open Filing Document →

Form 4 Gift Tax / Compensation Filing 2026-06-22

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

Dill Julie (Director) 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 transferred as a gift, typically for estate or charitable planning. No sale into the market took place.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`G`	Gift	325	—	—

Filing: Form 4 (Insider Transaction) Insider: Dill Julie (Director) Shares: 325

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-05-21

STRL 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	40,000	—	—

Filing: Form 4 (Insider Transaction) Insider: CUTILLO JOSEPH A (Director, Chief Executive Officer) Shares: 40,000

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-05-11

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

CREGG ROGER A (Director) 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 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	181	—	—

Filing: Form 4 (Insider Transaction) Insider: CREGG ROGER A (Director) Shares: 181

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-05-11

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

Bosway William T (Director) 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 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	181	—	—

Filing: Form 4 (Insider Transaction) Insider: Bosway William T (Director) Shares: 181

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-05-11

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

Dill Julie (Director) 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 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	181	—	—

Filing: Form 4 (Insider Transaction) Insider: Dill Julie (Director) Shares: 181

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-05-11

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

O'Brien Dana C. (Director) 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 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	181	—	—

Filing: Form 4 (Insider Transaction) Insider: O'Brien Dana C. (Director) Shares: 181

View on SEC EDGAR → Open Filing Document →

Proposed Insider Sales 1 · Form 144

A Form 144 is a notice of intent to sell restricted or control securities. It is not a record that anything was sold. Sterling Infrastructure, Inc. has 1 such notice in this period.

The distinction matters because a Form 144 is frequently reported as though it were a completed insider sale. The filer may sell all of the shares covered, some of them, or none at all, and there is no obligation to update the notice either way. A sale that is actually executed by an officer or director shows up separately on a Form 4, which is the filing to check before treating a proposed sale as a real one.

Form 144 Proposed Insider Sale 2026-06-25

STRL Form 144 filed for proposed insider sale by Wolf Mark D. (2,500 shares) ~$2.22M

Wolf Mark D. filed a Form 144 with the SEC indicating intent to sell STRL (STERLING INFRASTRUCTURE, INC.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: Wolf Mark D. Shares: 2,500 Est. Value: $2.22M

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 Sterling Infrastructure, 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 2026-10-05