$KOSS

$3.41 -$0.02 (0.58%) Close

$KOSS Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 9.5M shares outstanding

Who owns KOSS?

By type of holder

Institutions 5.3% Insiders 70.4% Everyone else 24.3%

Concentration Top 10 holders own 75.0%

Koss Michael J 51.7% · Koss John C JR 18.0%

Institutional ownership

5.3%

+0.2 pts vs last qtr

Institutional holders

0 vs last qtr

Net shares bought

+18.0K

by institutions in Q2 2026

New / sold out

3 / 3

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Citadel Advisors LLC NEW +33.1K
BlackRock, Inc. +5.4K

Biggest sellers in Q2 2026

XTX Topco Ltd SOLD OUT −10.8K
PNC Financial Services Group, Inc. SOLD OUT −7.0K

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for Koss Corp in the last 12 months.

Is your stake being diluted?

Diluted share count, FY2018–FY2026

+28.2%

+3.15% a year

Each share's claim on the business

−22.0%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $2.98M

over 9 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years81% 3–5 years0% 1–3 years12% Under 1 year7%

Quarterly turnover

7.5%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting KOSS on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
VC Vanguard Capital Management LLC	189.6K	2.00%	Unchanged	≤2021	0.0%
Shares held by quarter Peak holding189.6K (Q1'26) Change over 8 quarters+189.6K Share of the company2.000% Vanguard Capital Management LLC's full portfolio →
B BlackRock, Inc.	95.0K	1.00%	+5.4K (+6.0%)	≤2021	0.0%
Shares held by quarter Peak holding95.0K (Q2'26) Change over 8 quarters+42.9K Share of the company1.000% BlackRock, Inc.'s full portfolio →

Vanguard Capital Management LLC

189.6K

% of company

2.00%

Change vs last qtr

Unchanged

Held since

≤2021

BlackRock, Inc.

95.0K

% of company

1.00%

Change vs last qtr

+5.4K (+6.0%)

Held since

≤2021

24 more super investors behind a free account

See every manager holding Koss Corp, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting KOSS on Form N-PORT; together they hold 3.0% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$490K	122.1K	1.29%	0.00%	June 30, 2026
VE Vanguard Extended Market Index Fund Vanguard Index Funds	$271K	67.5K	0.71%	0.00%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$490K

% of company

1.29%

% of the fund

0.00%

As of

June 30, 2026

Vanguard Extended Market Index Fund

Vanguard Index Funds

Position value

$271K

% of company

0.71%

% of the fund

0.00%

As of

June 30, 2026

18 more funds behind a free account

See every fund holding Koss Corp and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
KM Koss Michael J Insider	4.9M	51.73%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company51.730% Koss Michael J's insider activity →
KJ Koss John C JR Insider	1.7M	17.95%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company17.950% Koss John C JR's insider activity →

Koss Michael J

Insider

4.9M

% of company

51.73%

Change vs last qtr

—

Held since

—

Koss John C JR

Insider

1.7M

% of company

17.95%

Change vs last qtr

—

Held since

—

2 more holders behind a free account

See every insider and 5%+ holder of Koss Corp.

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