Here are the 10-K annual reports from Koss Corp (KOSS) in our archive since June 2025, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A 10-K covers the audited annual report, with the full financial statements, so if you follow KOSS and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full KOSS filings page.
KOSS CORP (KOSS) designs and sells stereo headphones and related accessories as a single operating segment, and in 2026 began a “diversification by acquisition” strategy aimed at adding cash‑generative businesses to reshape its financial profile over the next one to five years.
For the year ended June 30, 2026, net sales were $13.0 million, up 3.1% from 2025. Domestic sales rose 21.2% while export sales fell 41.2%. Gross margin was 41.9%, boosted by $753,000 of U.S. tariff refunds; excluding refunds, margin was 36.1%. The company reported a loss before tax of $0.38 million, narrower than 2025. Liquidity remained strong with $3.0 million in cash and $16.8 million in U.S. Treasuries, and a $5.0 million undrawn credit facility. Key risks include heavy reliance on contract manufacturing in China, tariff and trade-policy volatility, customer concentration (Amazon DTC about 22% of 2026 sales), significant stock ownership by the Koss family, and pronounced stock-price and volume volatility.