Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
Feb. 2, 2021 KOSS S 30,000 $19.84 $595,200 757,949 Direct -3.81% Disposed -80.5% (price as of 2026-10-02)
Feb. 1, 2021 KOSS S 20,000 $35.01 $700,200 787,949 Direct -2.48% Disposed -89.0% (price as of 2026-10-02)
Feb. 1, 2021 KOSS S 20,000 $41.81 $836,200 807,949 Direct -2.42% Disposed -90.8% (price as of 2026-10-02)
Feb. 1, 2021 KOSS S 5,000 $44.00 $220,000 827,949 Direct -0.60% Disposed -91.2% (price as of 2026-10-02)
Feb. 1, 2021 KOSS S 25,000 $48.26 $1,206,500 832,949 Direct -2.91% Disposed -92.0% (price as of 2026-10-02)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Initial ownership (Form 3) 1 holding

07

Securities held when first becoming an insider, per SEC Form 3.

DateTickerSecuritySharesOwnership
Sept. 10, 2013 KOSS Common Stock 857,949 Direct