Michael J Koss Jr

Insider

First SEC filing: July 29, 2016 · Latest: July 25, 2019

On this page

Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Derivatives Options and other derivative holdings reported by this person.
Initial holdings The stakes this person held when they first started reporting.

Insider at

KOSS selling June 13, 2025

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 29 non-open-market transactions below 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

29 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
May 6, 2026	KOSS	A	100,000	—	—	100,000 Direct	—	Acquired	(price as of 2026-08-20)
June 13, 2025	KOSS	M	24,643	—	—	34,357 Direct	-41.77%	Disposed	(price as of 2026-08-20)
June 13, 2025	KOSS	S	24,643	$4.78	$117,794	26,000 Direct	-48.66%	Disposed	-25.7% (price as of 2026-08-20)
June 13, 2025	KOSS	M	24,643	$1.90	$46,822	50,643 Direct	+94.78%	Acquired	86.8% (price as of 2026-08-20)
June 12, 2025	KOSS	M	6,000	—	—	59,000 Direct	-9.23%	Disposed	(price as of 2026-08-20)
June 12, 2025	KOSS	S	6,000	$4.91	$29,460	26,000 Direct	-18.75%	Disposed	-27.7% (price as of 2026-08-20)
June 12, 2025	KOSS	M	6,000	$1.90	$11,400	32,000 Direct	+23.08%	Acquired	86.8% (price as of 2026-08-20)
Sept. 15, 2021	KOSS	M	9,089	—	—	20,911 Direct	-30.30%	Disposed	(price as of 2026-08-20)
Sept. 15, 2021	KOSS	M	15,000	—	—	15,000 Direct	-50.00%	Disposed	(price as of 2026-08-20)
Sept. 15, 2021	KOSS	S	24,089	$17.74	$427,339	26,000 Direct	-48.09%	Disposed	-80.0% (price as of 2026-08-20)
Sept. 15, 2021	KOSS	M	9,089	$2.17	$19,723	50,089 Direct	+22.17%	Acquired	63.6% (price as of 2026-08-20)
Sept. 15, 2021	KOSS	M	15,000	$2.92	$43,800	41,000 Direct	+57.69%	Acquired	21.6% (price as of 2026-08-20)
Aug. 25, 2021	KOSS	M	15,000	—	—	65,000 Direct	-18.75%	Disposed	(price as of 2026-08-20)
Aug. 25, 2021	KOSS	M	15,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Aug. 25, 2021	KOSS	S	30,000	$18.01	$540,300	26,000 Direct	-53.57%	Disposed	-80.3% (price as of 2026-08-20)
Aug. 25, 2021	KOSS	M	15,000	$1.90	$28,500	56,000 Direct	+36.59%	Acquired	86.8% (price as of 2026-08-20)
Aug. 25, 2021	KOSS	M	15,000	$1.95	$29,250	41,000 Direct	+57.69%	Acquired	82.1% (price as of 2026-08-20)
June 15, 2021	KOSS	S	10,000	$24.30	$243,000	26,000 Direct	-27.78%	Disposed	-85.4% (price as of 2026-08-20)
June 2, 2021	KOSS	S	10,000	$40.51	$405,100	36,000 Direct	-21.74%	Disposed	-91.2% (price as of 2026-08-20)
Feb. 25, 2021	KOSS	M	15,000	—	—	45,000 Direct	-25.00%	Disposed	(price as of 2026-08-20)
Feb. 25, 2021	KOSS	S	11,000	$32.89	$361,790	46,000 Direct	-19.30%	Disposed	-89.2% (price as of 2026-08-20)
Feb. 25, 2021	KOSS	S	4,000	$31.25	$125,000	57,000 Direct	-6.56%	Disposed	-88.6% (price as of 2026-08-20)
Feb. 25, 2021	KOSS	M	15,000	$2.17	$32,550	61,000 Direct	+32.61%	Acquired	63.6% (price as of 2026-08-20)
Feb. 2, 2021	KOSS	M	13,948	—	—	30,000 Direct	-31.74%	Disposed	(price as of 2026-08-20)
Feb. 2, 2021	KOSS	S	13,948	$25.98	$362,369	46,000 Direct	-23.27%	Disposed	-86.3% (price as of 2026-08-20)
Feb. 2, 2021	KOSS	M	13,948	$2.92	$40,728	59,948 Direct	+30.32%	Acquired	21.6% (price as of 2026-08-20)
Feb. 1, 2021	KOSS	M	16,052	—	—	43,948 Direct	-26.75%	Disposed	(price as of 2026-08-20)
Feb. 1, 2021	KOSS	M	45,000	—	—	15,000 Direct	-75.00%	Disposed	(price as of 2026-08-20)
Feb. 1, 2021	KOSS	M	30,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Feb. 1, 2021	KOSS	S	26,052	$35.07	$913,644	46,000 Direct	-36.16%	Disposed	-89.9% (price as of 2026-08-20)
Feb. 1, 2021	KOSS	S	5,000	$39.40	$197,000	72,052 Direct	-6.49%	Disposed	-91.0% (price as of 2026-08-20)
Feb. 1, 2021	KOSS	S	60,000	$40.58	$2,434,800	77,052 Direct	-43.78%	Disposed	-91.3% (price as of 2026-08-20)
Feb. 1, 2021	KOSS	M	16,052	$2.92	$46,872	137,052 Direct	+13.27%	Acquired	21.6% (price as of 2026-08-20)
Feb. 1, 2021	KOSS	M	45,000	$1.95	$87,750	121,000 Direct	+59.21%	Acquired	82.1% (price as of 2026-08-20)
Feb. 1, 2021	KOSS	M	30,000	$2.42	$72,600	76,000 Direct	+65.22%	Acquired	46.7% (price as of 2026-08-20)
Oct. 2, 2020	KOSS	J	44,000	—	—	46,000 Direct	+2200.00%	Acquired	(price as of 2026-08-20)
July 22, 2020	KOSS	A	80,000	—	—	80,000 Direct	—	Acquired	(price as of 2026-08-20)
July 24, 2019	KOSS	A	60,000	$2.17	$130,200	60,000 Direct	—	Acquired	63.6% (price as of 2026-08-20)
July 25, 2018	KOSS	A	60,000	$2.92	$175,200	60,000 Direct	—	Acquired	21.6% (price as of 2026-08-20)
July 26, 2017	KOSS	A	60,000	$1.95	$117,000	60,000 Direct	—	Acquired	82.1% (price as of 2026-08-20)
July 27, 2016	KOSS	A	30,000	$2.42	$72,600	30,000 Direct	—	Acquired	46.7% (price as of 2026-08-20)

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.

Derivative holdings (Form 4 Table II)

Options, RSUs and convertible securities reported on Form 4 Table II.

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
May 6, 2026	KOSS	Stock Options (Right to Buy)	Common Stock (100,000)	$4.73	May 6, 2031	100,000	Acquired
June 13, 2025	KOSS	Stock Option (Right to Buy)	Common Stock (24,643)	$1.90	July 22, 2025	24,643	Disposed
June 12, 2025	KOSS	Stock Option (Right to Buy)	Common Stock (6,000)	$1.90	July 22, 2025	6,000	Disposed
Sept. 15, 2021	KOSS	Stock Option (right to buy)	Common Stock (9,089)	$2.17	July 24, 2024	9,089	Disposed
Sept. 15, 2021	KOSS	Stock Option (right to buy)	Common Stock (15,000)	$2.92	July 25, 2023	15,000	Disposed
Aug. 25, 2021	KOSS	Stock Option (right to buy)	Common Stock (15,000)	$1.90	July 22, 2025	15,000	Disposed
Aug. 25, 2021	KOSS	Stock Option (right to buy)	Common Stock (15,000)	$1.95	July 26, 2022	15,000	Disposed
Feb. 25, 2021	KOSS	Stock Option (right to buy)	Common Stock (15,000)	$2.17	July 24, 2024	15,000	Disposed
Feb. 2, 2021	KOSS	Stock Option (right to buy)	Common Stock (13,948)	$2.92	July 25, 2023	13,948	Disposed
Feb. 1, 2021	KOSS	Stock Option (right to buy)	Common Stock (16,052)	$2.92	July 25, 2023	16,052	Disposed
Feb. 1, 2021	KOSS	Stock Option (right to buy)	Common Stock (45,000)	$1.95	July 26, 2022	45,000	Disposed
Feb. 1, 2021	KOSS	Stock Option (right to buy)	Common Stock (30,000)	$2.42	July 27, 2021	30,000	Disposed
July 22, 2020	KOSS	Stock Options (Right to Buy)	Common Stock (80,000)	$1.90	July 22, 2025	80,000	Acquired
July 24, 2019	KOSS	Common Stock	Common Stock (60,000)	$2.17	July 24, 2024	60,000	Acquired
July 25, 2018	KOSS	Stock Option (right to buy)	Common Stock (60,000)	$2.92	July 25, 2023	60,000	Acquired
July 26, 2017	KOSS	Stock Option (right to buy)	Common Stock (60,000)	$1.95	July 26, 2022	60,000	Acquired
July 27, 2016	KOSS	Stock Option (right to buy)	Common Stock (30,000)	$2.42	July 27, 2021	30,000	Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 8 holdings

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

Date	Ticker	Security	Shares	Ownership
July 29, 2016	KOSS	Common Stock	2,000	Direct
July 29, 2016	KOSS	Common Stock	10	Indirect
July 29, 2016	KOSS	Stock Option (right to buy)→ Common Stock (15,000)	15,000	Direct
July 29, 2016	KOSS	Stock Option (right to buy)→ Common Stock (25,000)	25,000	Direct
July 29, 2016	KOSS	Stock Option (right to buy)→ Common Stock (25,000)	25,000	Direct
July 29, 2016	KOSS	Stock Option (right to buy)→ Common Stock (25,000)	25,000	Direct
July 28, 2016	KOSS	Common Stock	2,000	Direct
July 28, 2016	KOSS	Common Stock	10	Indirect