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Koss Corporation (KOSS)

Koss Corporation at a glance — key fundamentals, SEC filings, insider buying and selling, and earnings dates.

Koss Corporation (KOSS) is a Consumer Electronics company based in US with a market capitalization of $38.2M. Revenue grew 2.9% year-over-year and free cash flow was negative at -$705.6K. This page tracks KOSS's SEC filings, insider buying and selling, earnings dates, and key fundamentals in one place.

US · 28 employees · IPO Mar 17, 1980

Valuation

Valuation & price

$3.86 · as of May 17, 2026 · -40.7% vs 52w high

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P/E ratio

Latest-FY diluted EPS

1.25

P/B ratio

Market cap ÷ book equity

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Dividend yield

Price — last 12 months

$6.48$5.03$3.58Jul 25Dec 25Jun 26Jul 7, 25$5.28Jul 9, 25$5.36Jul 11, 25$5.25Jul 15, 25$5.06Jul 17, 25$5.32Jul 21, 25$5.38Jul 23, 25$6.27Jul 25, 25$5.52Jul 29, 25$5.58Jul 31, 25$5.28Aug 4, 25$5.42Aug 6, 25$5.73Aug 8, 25$5.48Aug 12, 25$5.36Aug 14, 25$5.47Aug 18, 25$6.14Aug 20, 25$6.10Aug 22, 25$6.48Aug 27, 25$6.41Aug 29, 25$6.20Sep 3, 25$6.20Sep 5, 25$6.15Sep 9, 25$6.07Sep 11, 25$5.72Sep 15, 25$5.80Sep 17, 25$5.68Sep 19, 25$5.67Sep 23, 25$5.50Sep 25, 25$5.26Sep 29, 25$5.20Oct 1, 25$5.22Oct 3, 25$5.19Oct 7, 25$5.03Oct 9, 25$4.89Oct 13, 25$4.94Oct 16, 25$5.18Oct 20, 25$4.99Oct 22, 25$4.97Oct 24, 25$5.19Oct 28, 25$5.06Oct 30, 25$4.79Nov 3, 25$4.78Nov 5, 25$4.71Nov 7, 25$4.50Nov 11, 25$5.01Nov 13, 25$4.80Nov 17, 25$4.75Nov 19, 25$4.62Nov 21, 25$4.66Nov 25, 25$4.80Nov 28, 25$5.06Dec 2, 25$4.90Dec 5, 25$4.82Dec 9, 25$4.77Dec 11, 25$4.72Dec 15, 25$4.60Dec 17, 25$4.50Dec 19, 25$4.28Dec 23, 25$4.47Dec 26, 25$4.49Dec 30, 25$4.20Jan 2, 26$4.34Jan 6, 26$4.28Jan 8, 26$4.31Jan 12, 26$4.53Jan 14, 26$4.34Jan 16, 26$4.47Jan 21, 26$4.52Jan 23, 26$4.42Jan 28, 26$4.35Jan 30, 26$4.33Feb 3, 26$4.62Feb 5, 26$4.57Feb 9, 26$4.58Feb 11, 26$4.40Feb 13, 26$4.38Feb 18, 26$4.16Feb 20, 26$4.26Feb 24, 26$4.26Feb 26, 26$4.08Mar 2, 26$4.10Mar 4, 26$4.20Mar 6, 26$4.11Mar 10, 26$4.10Mar 12, 26$3.92Mar 16, 26$3.92Mar 19, 26$3.90Mar 23, 26$4.01Mar 25, 26$3.93Mar 27, 26$3.60Mar 31, 26$3.58Apr 2, 26$3.68Apr 7, 26$3.77Apr 9, 26$3.86Apr 13, 26$3.86Apr 15, 26$4.02Apr 17, 26$4.17Apr 21, 26$4.23Apr 23, 26$4.48Apr 27, 26$4.35Apr 29, 26$4.18May 1, 26$4.36May 5, 26$4.41May 8, 26$4.16May 12, 26$3.94May 14, 26$3.87May 18, 26$3.96May 20, 26$4.00May 22, 26$3.97May 27, 26$4.02May 29, 26$4.08Jun 2, 26$4.07Jun 4, 26$4.07Jun 8, 26$4.09Jun 10, 26$3.91Jun 12, 26$3.91Jun 16, 26$3.98Jun 18, 26$4.03Jun 23, 26$3.98Jun 29, 26$3.95
$3.5052-week range$6.51
Loading valuation history…

Fundamentals

Key fundamentals

$38.2M

Market cap

2.9%

Revenue growth (YoY)

37.8%

Gross margin

-$705.6K

Free cash flow (USD)

-$13.1M

Net debt

Net cash position

1.2%

Share dilution

1/4

Graham criteria passed

Defensive-investor screen

Technology

Sector

Trajectory

Long-term trends

Revenue by year

2016 → 2025

FY 2016$26.0MFY 2017$24.1MFY 2018$23.5MFY 2019$21.8MFY 2020$18.3MFY 2021$19.5MFY 2022$17.7MFY 2023$13.1MFY 2024$12.3MFY 2025$12.6M
$26M$12.6M

Free cash flow by year

2016 → 2025

FY 2016$-135.2KFY 2017$-169.2KFY 2018$780.5KFY 2019$1.2MFY 2020$1.4MFY 2021$-251.4KFY 2022$-1.1MFY 2023$10.6MFY 2024$-652.3KFY 2025$-705.6K
-$135.2K-$705.6K

Gross margin by year

2021 → 2025

FY 202134.4%FY 202237.9%FY 202334.0%FY 202434.1%FY 202537.8%
34.4%37.8%

Value screen

Graham defensive-investor tests

Computing the scorecard — refreshing any stale inputs…

0

Insider buys · 90 days

0

Insider sells · 90 days

Earnings

Last report: 10-Q filed May 8, 2026

Next expected: not yet scheduled

On the tape

Recent SEC & insider activity

  • Quarterly report10-Q FiledMay 8, 2026Filing
  • 8-K eventEarnings ReleaseMay 7, 2026Filing

Questions

Frequently asked questions

What is Koss Corporation's market cap?

Koss Corporation (KOSS) has a market capitalization of $38.2M.

What is KOSS's P/E ratio?

A meaningful P/E ratio is not available for KOSS — the company's latest fiscal-year earnings per share is zero, negative, or not yet cached.

What is KOSS's price-to-book (P/B) ratio?

KOSS trades at 1.25 times book value per share.

Are insiders buying KOSS stock?

SEC Form 4 filings show no open-market insider buys at Koss Corporation in the last 90 days (0 sells).

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Timeline

Every filing, insider trade & earnings on a price-anchored timeline

Filing Analyzer

Search the actual 10-K / 10-Q text with AI research angles

News

Latest press coverage in one feed

Data: SEC EDGAR filings and cached fundamental data; prices and ratios use the most recent cached quote and statements (may lag by up to a day). Educational and research purposes only. Not investment advice.