John Koss

Track

Insider profile

Currently holds a position at Koss Corp

Performance

Overall performance
4.2
Performance over holding periods
4.2
30 days 90 days 120 days
Average return 46% 8.2% 15.1%
Success rate 99% 68% 82%
Transactions
44 0% Buy
34 71% Buy
47 69% Buy
Ranking by holding-period performance

Positions

Position Company Period
Vice President - Sales Koss Corp Jan. 1, 1988 -
John Koss's trades of Koss Corp's stock


• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
US Koss Corp (KOSS)
Transaction date
Sale
Price
323.00
Quantity 66,454 -18.1%
Value US$4,228,921
US Koss Corp (KOSS)
Transaction date
Sale
Price
113.98
Quantity 9,155 -24.1%
Value US$757,962
US Koss Corp (KOSS)
Transaction date
Sale
Price
71.19
Quantity 30,173 -33.9%
Value US$2,371,244
US Koss Corp (KOSS)
Transaction date
Sale
Price
7.39
Quantity 25,000 -11.3%
Value US$184,725
US Koss Corp (KOSS)
Transaction date
Sale
Price
5.25
Quantity 25,000 -11.3%
Value US$131,250
US Koss Corp (KOSS)
Transaction date
Sale
Price
5.25
Quantity 25,000 -11.3%
Value US$131,250
US Koss Corp (KOSS)
Transaction date
Sale
Price
20.06
Quantity 25,000 -14.2%
Value US$501,500
US Koss Corp (KOSS)
Transaction date
Sale
Price
18.27
Quantity 13,737 -7.2%
Value US$250,975
US Koss Corp (KOSS)
Transaction date
Sale
Price
17.40
Quantity 36,263 -16.0%
Value US$630,976
US Koss Corp (KOSS)
Transaction date
Sale
Price
24.22
Quantity 5,000 -3.2%
Value US$121,100
US Koss Corp (KOSS)
Transaction date
Sale
Price
25.20
Quantity 3,000 -1.9%
Value US$75,600
US Koss Corp (KOSS)
Transaction date
Sale
Price
35.36
Quantity 5,000 -2.8%
Value US$176,800
US Koss Corp (KOSS)
Transaction date
Sale
Price
32.50
Quantity 5,000 -2.7%
Value US$162,500
US Koss Corp (KOSS)
Transaction date
Sale
Price
30.00
Quantity 5,000 -2.7%
Value US$150,000
US Koss Corp (KOSS)
Transaction date
Sale
Price
31.35
Quantity 5,000 -2.6%
Value US$156,750
US Koss Corp (KOSS)
Transaction date
Sale
Price
28.00
Quantity 5,000 -2.5%
Value US$140,000
US Koss Corp (KOSS)
Transaction date
Sale
Price
25.00
Quantity 5,000 -2.5%
Value US$125,000
US Koss Corp (KOSS)
Transaction date
Sale
Price
23.50
Quantity 10,000 -4.7%
Value US$235,000
US Koss Corp (KOSS)
Transaction date
Sale
Price
36.72
Quantity 4,000 -1.8%
Value US$146,880
US Koss Corp (KOSS)
Transaction date
Sale
Price
30.00
Quantity 5,000 -2.2%
Value US$150,000
US Koss Corp (KOSS)
Transaction date
Sale
Price
27.95
Quantity 10,000 -4.2%
Value US$279,500
US Koss Corp (KOSS)
Transaction date
Sale
Price
25.22
Quantity 10,000 -4.1%
Value US$252,200
US Koss Corp (KOSS)
Transaction date
Sale
Price
27.06
Quantity 40,000 -5.3%
Value US$1,082,400
US Koss Corp (KOSS)
Transaction date
Sale
Price
23.51
Quantity 10,000 -1.3%
Value US$235,100
US Koss Corp (KOSS)
Transaction date
Sale
Price
30.13
Quantity 10,000 -3.8%
Value US$301,300
US Koss Corp (KOSS)
Transaction date
Sale
Price
24.00
Quantity 5,000 -1.8%
Value US$120,000
US Koss Corp (KOSS)
Transaction date
Sale
Price
25.44
Quantity 10,000 -3.6%
Value US$254,400
US Koss Corp (KOSS)
Transaction date
Sale
Price
19.84
Quantity 30,000 -3.8%
Value US$595,200
US Koss Corp (KOSS)
Transaction date
Sale
Price
18.07
Quantity 5,133 -1.8%
Value US$92,753
US Koss Corp (KOSS)
Transaction date
Sale
Price
23.56
Quantity 35,000 -10.9%
Value US$824,600
US Koss Corp (KOSS)
Transaction date
Sale
Price
35.01
Quantity 20,000 -2.5%
Value US$700,200
US Koss Corp (KOSS)
Transaction date
Sale
Price
41.81
Quantity 20,000 -2.4%
Value US$836,200
US Koss Corp (KOSS)
Transaction date
Sale
Price
44.00
Quantity 5,000 -0.6%
Value US$220,000
US Koss Corp (KOSS)
Transaction date
Sale
Price
48.26
Quantity 25,000 -2.9%
Value US$1,206,500
US Koss Corp (KOSS)
Transaction date
Sale
Price
49.47
Quantity 17,779 -100.0%
Value US$879,527
US Koss Corp (KOSS)
Transaction date
Sale
Price
55.18
Quantity 10,000 -36.0%
Value US$551,800
US Koss Corp (KOSS)
Transaction date
Sale
Price
34.04
Quantity 10,000 -3.0%
Value US$340,400
US Koss Corp (KOSS)
Transaction date
Sale
Price
35.06
Quantity 25,000 -7.0%
Value US$876,500
US Koss Corp (KOSS)
Transaction date
Sale
Price
36.63
Quantity 43,167 -10.8%
Value US$1,581,207
US Koss Corp (KOSS)
Transaction date
Sale
Price
38.26
Quantity 16,000 -3.9%
Value US$612,160
US Koss Corp (KOSS)
Transaction date
Sale
Price
39.13
Quantity 47,033 -10.2%
Value US$1,840,401
US Koss Corp (KOSS)
Transaction date
Sale
Price
41.11
Quantity 35,283 -7.1%
Value US$1,450,484
US Koss Corp (KOSS)
Transaction date
Sale
Price
42.24
Quantity 96,250 -16.2%
Value US$4,065,600
US Koss Corp (KOSS)
Transaction date
Sale
Price
45.62
Quantity 12,267 -2.0%
Value US$559,621
Notification date Transaction date Company B/S Transaction type Nb. shares
Price
Value 		Number of shares Price Value Details
2025-06-17 2025-06-12
US Koss Corp (KOSS)
S Sale
66,454 -18.1%
323.00
US$4,228,921 		66,454 -18.1% 323.00 US$4,228,921
2025-06-17 2025-06-11
US Koss Corp (KOSS)
S Sale
9,155 -24.1%
113.98
US$757,962 		9,155 -24.1% 113.98 US$757,962
2025-06-17 2025-06-10
US Koss Corp (KOSS)
S Sale
30,173 -33.9%
71.19
US$2,371,244 		30,173 -33.9% 71.19 US$2,371,244
2024-12-16 2024-12-12
US Koss Corp (KOSS)
S Sale
25,000 -11.3%
7.39
US$184,725 		25,000 -11.3% 7.39 US$184,725
2024-05-21 2024-05-20
US Koss Corp (KOSS)
S Sale
25,000 -11.3%
5.25
US$131,250 		25,000 -11.3% 5.25 US$131,250
2024-05-21 2024-05-20
US Koss Corp (KOSS)
S Sale
25,000 -11.3%
5.25
US$131,250 		25,000 -11.3% 5.25 US$131,250
2021-08-26 2021-08-24
US Koss Corp (KOSS)
S Sale
25,000 -14.2%
20.06
US$501,500 		25,000 -14.2% 20.06 US$501,500
2021-08-26 2021-08-24
US Koss Corp (KOSS)
S Sale
13,737 -7.2%
18.27
US$250,975 		13,737 -7.2% 18.27 US$250,975
2021-08-26 2021-08-24
US Koss Corp (KOSS)
S Sale
36,263 -16.0%
17.40
US$630,976 		36,263 -16.0% 17.40 US$630,976
2021-06-16 2021-06-15
US Koss Corp (KOSS)
S Sale
5,000 -3.2%
24.22
US$121,100 		5,000 -3.2% 24.22 US$121,100
2021-06-16 2021-06-14
US Koss Corp (KOSS)
S Sale
3,000 -1.9%
25.20
US$75,600 		3,000 -1.9% 25.20 US$75,600
2021-06-03 2021-06-03
US Koss Corp (KOSS)
S Sale
5,000 -2.8%
35.36
US$176,800 		5,000 -2.8% 35.36 US$176,800
2021-06-03 2021-06-03
US Koss Corp (KOSS)
S Sale
5,000 -2.7%
32.50
US$162,500 		5,000 -2.7% 32.50 US$162,500
2021-06-03 2021-06-03
US Koss Corp (KOSS)
S Sale
5,000 -2.7%
30.00
US$150,000 		5,000 -2.7% 30.00 US$150,000
2021-06-03 2021-06-03
US Koss Corp (KOSS)
S Sale
5,000 -2.6%
31.35
US$156,750 		5,000 -2.6% 31.35 US$156,750
2021-06-03 2021-06-02
US Koss Corp (KOSS)
S Sale
5,000 -2.5%
28.00
US$140,000 		5,000 -2.5% 28.00 US$140,000
2021-06-03 2021-06-01
US Koss Corp (KOSS)
S Sale
5,000 -2.5%
25.00
US$125,000 		5,000 -2.5% 25.00 US$125,000
2021-06-01 2021-05-28
US Koss Corp (KOSS)
S Sale
10,000 -4.7%
23.50
US$235,000 		10,000 -4.7% 23.50 US$235,000
2021-03-12 2021-03-10
US Koss Corp (KOSS)
S Sale
4,000 -1.8%
36.72
US$146,880 		4,000 -1.8% 36.72 US$146,880
2021-03-12 2021-03-10
US Koss Corp (KOSS)
S Sale
5,000 -2.2%
30.00
US$150,000 		5,000 -2.2% 30.00 US$150,000
2021-03-12 2021-03-10
US Koss Corp (KOSS)
S Sale
10,000 -4.2%
27.95
US$279,500 		10,000 -4.2% 27.95 US$279,500
2021-03-12 2021-03-10
US Koss Corp (KOSS)
S Sale
10,000 -4.1%
25.22
US$252,200 		10,000 -4.1% 25.22 US$252,200
2021-02-26 2021-02-25
US Koss Corp (KOSS)
S Sale
40,000 -5.3%
27.06
US$1,082,400 		40,000 -5.3% 27.06 US$1,082,400
2021-02-26 2021-02-25
US Koss Corp (KOSS)
S Sale
10,000 -1.3%
23.51
US$235,100 		10,000 -1.3% 23.51 US$235,100
2021-02-26 2021-02-25
US Koss Corp (KOSS)
S Sale
10,000 -3.8%
30.13
US$301,300 		10,000 -3.8% 30.13 US$301,300
2021-02-05 2021-02-04
US Koss Corp (KOSS)
S Sale
5,000 -1.8%
24.00
US$120,000 		5,000 -1.8% 24.00 US$120,000
2021-02-05 2021-02-03
US Koss Corp (KOSS)
S Sale
10,000 -3.6%
25.44
US$254,400 		10,000 -3.6% 25.44 US$254,400
2021-02-03 2021-02-02
US Koss Corp (KOSS)
S Sale
30,000 -3.8%
19.84
US$595,200 		30,000 -3.8% 19.84 US$595,200
2021-02-03 2021-02-02
US Koss Corp (KOSS)
S Sale
5,133 -1.8%
18.07
US$92,753 		5,133 -1.8% 18.07 US$92,753
2021-02-03 2021-02-02
US Koss Corp (KOSS)
S Sale
35,000 -10.9%
23.56
US$824,600 		35,000 -10.9% 23.56 US$824,600
2021-02-03 2021-02-01
US Koss Corp (KOSS)
S Sale
20,000 -2.5%
35.01
US$700,200 		20,000 -2.5% 35.01 US$700,200
2021-02-03 2021-02-01
US Koss Corp (KOSS)
S Sale
20,000 -2.4%
41.81
US$836,200 		20,000 -2.4% 41.81 US$836,200
2021-02-03 2021-02-01
US Koss Corp (KOSS)
S Sale
5,000 -0.6%
44.00
US$220,000 		5,000 -0.6% 44.00 US$220,000
2021-02-03 2021-02-01
US Koss Corp (KOSS)
S Sale
25,000 -2.9%
48.26
US$1,206,500 		25,000 -2.9% 48.26 US$1,206,500
2021-02-03 2021-02-01
US Koss Corp (KOSS)
S Sale
17,779 -100.0%
49.47
US$879,527 		17,779 -100.0% 49.47 US$879,527
2021-02-03 2021-02-01
US Koss Corp (KOSS)
S Sale
10,000 -36.0%
55.18
US$551,800 		10,000 -36.0% 55.18 US$551,800
2021-02-03 2021-02-01
US Koss Corp (KOSS)
S Sale
10,000 -3.0%
34.04
US$340,400 		10,000 -3.0% 34.04 US$340,400
2021-02-03 2021-02-01
US Koss Corp (KOSS)
S Sale
25,000 -7.0%
35.06
US$876,500 		25,000 -7.0% 35.06 US$876,500
2021-02-03 2021-02-01
US Koss Corp (KOSS)
S Sale
43,167 -10.8%
36.63
US$1,581,207 		43,167 -10.8% 36.63 US$1,581,207
2021-02-03 2021-02-01
US Koss Corp (KOSS)
S Sale
16,000 -3.9%
38.26
US$612,160 		16,000 -3.9% 38.26 US$612,160
2021-02-03 2021-02-01
US Koss Corp (KOSS)
S Sale
47,033 -10.2%
39.13
US$1,840,401 		47,033 -10.2% 39.13 US$1,840,401
2021-02-03 2021-02-01
US Koss Corp (KOSS)
S Sale
35,283 -7.1%
41.11
US$1,450,484 		35,283 -7.1% 41.11 US$1,450,484
2021-02-03 2021-02-01
US Koss Corp (KOSS)
S Sale
96,250 -16.2%
42.24
US$4,065,600 		96,250 -16.2% 42.24 US$4,065,600
2021-02-03 2021-02-01
US Koss Corp (KOSS)
S Sale
12,267 -2.0%
45.62
US$559,621 		12,267 -2.0% 45.62 US$559,621