Free calculators, SEC-verified stock data, and expert personal finance guides.
An engineer's walkthrough of the SEC's XBRL machine-readable filing format: what it is, why the SEC requires it, how iXBRL 10-Ks are structured, and what aggregating thousands of filings reveals about the data layer underneath public-company financial statements.
An engineer's guide to SEC Schedule TO — the form a bidder files when launching a tender offer. Covers Williams Act timing, Schedule 14D-9 target responses, friendly vs hostile bids, EDGAR access, and the conditions that decide whether a deal closes. Educational only — not investment advice.
An engineer's guide to SEC Form D — the short notice issuers file when claiming a Regulation D exemption. Covers Rules 504, 506(b), and 506(c), the accredited investor thresholds, what's actually in a filing, and how to read Form D on EDGAR. Educational only — not investment advice.
An engineer's guide to SEC Form 20-F — the annual report foreign private issuers file with the SEC. Covers structure, IFRS vs US GAAP, the 4-month deadline, EDGAR access, and how 20-F differs from 10-K. Educational only — not investment advice.
Building FinanceTrackDaily on the SEC EDGAR API, I see Form 144 confused with Form 4 constantly. This 2026 guide explains the Rule 144 affiliate notice, the 5,000 share / $50K threshold, holding periods, EDGAR mandate, and how engineers read these filings.
An engineer's guide to reading the SEC Form S-1 IPO prospectus. Covers risk factors, use of proceeds, underwriting, dilution, EDGAR access, and 2026 IPO context. Educational only — not investment advice.