RIO SEC Filing News — Rio Tinto Group

Latest SEC filings for Rio Tinto Group (RIO) 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: 2010-12-21.

Rio Tinto Group engages in exploring, mining, and processing mineral resources worldwide. The company operates through Iron Ore; Aluminium and lithium; and Copper segments. The Iron Ore segment engages in the iron ore mining, and salt and gypsum production in Western Australia. The Aluminum and lithium segment is involved in bauxite mining; alumina refining; and aluminium smelting, and recycling, as well as mining and processing of lithium. The Copper segment engages in mining and refining of co…
Sector: Basic Materials Industry: Other Industrial Metals & Mining Market Cap: $151.6B CIK: 863064
2
Total Filings
0
Bullish Classifications
1
Bearish Classifications
2
Insider Transactions
0
Material Events (8-K)
0
Periodic Reports
Rule-based classifications for RIO currently lean bearish. Of the 2 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.
Insider Transactions 2 · 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 2 filings in this group are Form 4s for Rio Tinto Group.

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 2 insider filings shown, the breakdown is 1 disposition to issuer 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

Disposition to issuer ×1
Shares were surrendered to or repurchased by the issuer rather than sold to other investors.
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 Open-market sale Insider Selling 2010-12-21

RIO insider RIO TINTO PLC (Director, 10% Owner) sold 29,400,000 shares (~$573.30M)

RIO TINTO PLC, listed as Director, 10% Owner at RIO TINTO PLC, reported an open-market sale of 29,400,000 RIO 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
C Derivative conversion 29,400,000 — —
S Open-market sale 29,400,000 $19.50 $573.30M
C Derivative conversion derivative · Common Membership Units 29,400,000 — —
Filing: Form 4 (Insider Transaction) Insider: RIO TINTO PLC (Director, 10% Owner) Shares: 29,400,000 Est. Value: $573.30M
View on SEC EDGAR → Open Filing Document →
Form 4 Disposition to issuer Tax / Compensation Filing 2009-11-20

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

RIO TINTO PLC (Director, 10% Owner) 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 surrendered to or repurchased by the issuer rather than sold to other investors.

Transactions reported on this filing
Code Nature Shares Price Value
D Disposition to issuer derivative · Common Membership Units 30,600,000 $14.18 $433.91M
Filing: Form 4 (Insider Transaction) Insider: RIO TINTO PLC (Director, 10% Owner)
View on SEC EDGAR → Open Filing Document →

How we classify Rio Tinto Group's filings

Straight from EDGAR

Each displayed record links to an original source document. StrongBuyAnalytics provides navigation and brief excerpts or summaries, not the filing itself. Parsing may omit context or contain errors, so read the original document in full.

Transaction codes, not guesswork

The nature shown on each insider filing comes from the transaction code the filer entered on the form itself — P for an open-market purchase, A for a compensation award, F for shares withheld to pay tax, M for an option exercise. Where one filing contains several codes, the transaction table lists them line by line.

Why the distinction matters

Insider activity is routinely summarised as buying or selling, which flattens together decisions that mean very different things. Shares withheld for tax on a vesting grant are an automatic administrative step; shares bought on the open market are someone committing their own money at the current price.

What this page does not tell you

A filing records what happened, not why. Form 4 does not always disclose whether a sale was executed under a pre-arranged Rule 10b5-1 plan, and no single filing is a basis for a decision on RIO. Read these alongside the fundamentals rather than in isolation.

Frequently Asked Questions — RIO SEC Filings

What SEC filings does Rio Tinto Group submit to the SEC?

Rio Tinto Group (RIO) 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 RIO?

A Form 4 for RIO 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 Rio Tinto Group?

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 RIO?

The 10-K is Rio Tinto Group'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 RIO SEC filings directly on EDGAR?

You can view all historical Rio Tinto Group filings on the SEC EDGAR company page for RIO. Each filing card on this page links directly to the original SEC document.

How often does Rio Tinto Group file with the SEC?

Rio Tinto Group 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 RIO shares. 8-K filings occur whenever a material event happens — which can be several times per quarter for an active company.

More Tools for RIO

RIO Full Stock Analysis RIO Live Chart Institutional Ownership Earnings Calendar Options Flow Scanner Semiconductor Demand Zone Tracker Sector Scanner Browse All Stocks

Want deeper RIO analysis?

View valuation, growth metrics, the rule-based stock-page score, demand zones, peer comparison, and more — all on the RIO stock analysis page.

RIO Full Analysis
Publisher, sources & limitations — September 15, 2026. StrongBuyAnalytics provides navigation and brief excerpts or summaries for educational use. Original filings remain at SEC EDGAR or other displayed source links; StrongBuyAnalytics does not author them. Filing dates are source dates, not publication dates for this page. Coverage can be delayed, incomplete, amended, or unavailable because of SEC/source availability, parsing, caching, or outages. Verify every material statement in the original filing.
Data Sources · Methodology · AI Disclosure · Corrections Policy · Disclaimer