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Nasdaq · CIK 0000056701

KOSS KOSS CORP

Insider trading from SEC Form 4. Last filing May 8, 2026. Close $3.84 on Oct 9, 2026, +14% from the 52-week low and -30% from the high.

In brief

KOSS CORP (KOSS) has 7 SEC Form 4 filings on file from 5 insiders, the latest filed on May 8, 2026. No insider bought or sold on the open market in the last 90 days; rows filed in that time are grants, exercises, tax withholding and other transactions that carry no view on the price.

4 open-market trades have been scored at KOSS. The newest: Lenore Lillie (director) bought $12k of stock on Dec 2, 2025, filed Dec 4, 2025, scored 31 (weak). The largest of the 4 shown: John C Koss Jr (Vice President - Sales) sold $285k on Jun 10, 2025, scored 27 (weak). 2 insiders sold within 14 days of each other around Jun 12, 2025.

Last 90 days

Net insider value
$0
no open-market trades
Buys
0
$0 by 0 insiders
Sells
0
$0 by 0 insiders
Insiders on file
5
with a Form 4 at this company

Price and insider trades, last year

KOSSOct 9, 2026 · close 3.84

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™

Signals

Open-market buys and sells at KOSS CORP, scored.

ScoreInsiderValueHoldingsPrice contextFiled
31WeakLenore Lillie
director
buy
$12k
2,500 shares
-+20% from low-42% from high
39WeakMichael J Koss Jr
VP - Marketing & Product
sell
$147k
30,643 shares
-96%+19% from low-42% from high
27WeakJohn C Koss Jr
Vice President - Sales
sell
$285k
50,000 shares
-23%+42% from low-31% from high
17WeakJohn C Koss Jr
Vice President - Sales
sell
$185k
25,000 shares
-11%-

Transactions

Every row filed, 22 in all.

DateInsiderTransactionSharesPriceValueHoldings afterFiled
May 6, 2026Kim M. Schulte
Chief Financial Officer
AGrant or award
Stock Options (Right to Buy)derivative
+50,000$0.00$050,000May 8, 2026
May 6, 2026Michael J Koss Jr
Executive Vice President
AGrant or award
Stock Options (Right to Buy)derivative
+100,000$0.00$0100,000May 8, 2026
Feb 17, 2026Michael J Koss
President and CEO
JOther
Common Stockindirect: As co-trustee of trust for child
-12,000$0.00$00Feb 17, 2026
Dec 2, 2025Lenore Lillie
director
POpen-market purchase
Common Stock
+2,500$4.96$12k2,500Dec 4, 2025
Jun 12, 2025Michael J Koss Jr
VP - Marketing & Product
MOption exercise
Common Stock
+6,000$1.90$11k32,000Jun 17, 2025
Jun 10, 2025John C Koss Jr
Vice President - Sales
MOption exercise
Common Stock
+25,000$1.90$48k221,028Jun 17, 2025
Jun 10, 2025John C Koss Jr
Vice President - Sales
SOpen-market sale
Common Stock
-25,000$5.80$145k196,028Jun 17, 2025
Jun 12, 2025Michael J Koss Jr
VP - Marketing & Product
SOpen-market sale
Common Stock
-6,000$4.91$29k26,000Jun 17, 2025
Jun 13, 2025Michael J Koss Jr
VP - Marketing & Product
MOption exercise
Common Stock
+24,643$1.90$47k50,643Jun 17, 2025
Jun 11, 2025John C Koss Jr
Vice President - Sales
MOption exercise
Common Stock
+23,500$1.90$45k219,528Jun 17, 2025
Jun 13, 2025Michael J Koss Jr
VP - Marketing & Product
SOpen-market sale
Common Stock
-24,643$4.78$118k26,000Jun 17, 2025
Jun 11, 2025John C Koss Jr
Vice President - Sales
SOpen-market sale
Common Stock
-23,500$5.65$133k196,028Jun 17, 2025
Jun 12, 2025John C Koss Jr
Vice President - Sales
MOption exercise
Common Stock
+1,500$1.90$2,850197,528Jun 17, 2025
Jun 12, 2025John C Koss Jr
Vice President - Sales
SOpen-market sale
Common Stock
-1,500$5.02$7,530196,028Jun 17, 2025
Jun 12, 2025Michael J Koss Jr
VP - Marketing & Product
MOption exercise
Stock Option (Right to Buy)derivative
-6,000$0.00$059,000Jun 17, 2025
Jun 13, 2025Michael J Koss Jr
VP - Marketing & Product
MOption exercise
Stock Option (Right to Buy)derivative
-24,643$0.00$034,357Jun 17, 2025
Jun 10, 2025John C Koss Jr
Vice President - Sales
MOption exercise
Stock Option (Right to Buy)derivative
-25,000$0.00$025,000Jun 17, 2025
Jun 11, 2025John C Koss Jr
Vice President - Sales
MOption exercise
Stock Option (Right to Buy)derivative
-23,500$0.00$01,500Jun 17, 2025
Jun 12, 2025John C Koss Jr
Vice President - Sales
MOption exercise
Stock Option (Right to Buy)derivative
-1,500$0.00$00Jun 17, 2025
Dec 12, 2024John C Koss Jr
Vice President - Sales
MOption exercise
Common Stock
+25,000$1.90$48k221,028Dec 16, 2024
Dec 12, 2024John C Koss Jr
Vice President - Sales
SOpen-market sale
Common Stock
-25,000$7.39$185k196,028Dec 16, 2024
Dec 12, 2024John C Koss Jr
Vice President - Sales
MOption exercise
Stock Option (Right to Buy)derivative
-25,000$0.00$050,000Dec 16, 2024

Insiders

Everyone who has filed a Form 4 here.

Questions about KOSS

Answered from the filings on this page, as of the latest one.

Are insiders buying KOSS?

No. In the last 90 days no insider at KOSS CORP bought or sold shares on the open market according to SEC Form 4 filings. The rows on file from that period are grants, exercises, tax withholding or other transactions, which carry no view on the price.

Who was the last insider to trade KOSS on the open market?

Lenore Lillie (director) bought $12k of KOSS on Dec 2, 2025 and filed the Form 4 on Dec 4, 2025. InsiderTell scored 31 (weak).

How many insiders file Form 4 at KOSS CORP?

5 people have filed a Form 4 at KOSS CORP, among them John C Koss Jr (Vice President - Sales), Michael J Koss (President and CEO), Michael J Koss Jr (Executive Vice President). Officers, directors and holders of more than 10% of a share class must report their trades within two business days.

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

KOSS insider trading: KOSS CORP | InsiderTell