John C Koss
CIK 901648 · View on SEC EDGAR ↗
Insider
First SEC filing: May 31, 2013 · Latest: May 31, 2013
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 3 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
3 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| May 29, 2013 | KOSS | P | 4,000 | $5.00 | $20,000 | 4,000 Direct | — | Acquired | -27.9% (price as of 2026-08-19) |
| Dec. 14, 2011 | KOSS | P | 3,109 | $5.20 | $16,167 | 305,064 Direct | +1.03% | Acquired | -30.7% (price as of 2026-08-19) |
| Dec. 12, 2011 | KOSS | P | 2,307 | $5.17 | $11,927 | 301,955 Direct | +0.77% | Acquired | -30.3% (price as of 2026-08-19) |
| Dec. 9, 2011 | KOSS | P | 74 | $5.10 | $377 | 299,648 Direct | +0.02% | Acquired | -29.3% (price as of 2026-08-19) |
| Dec. 5, 2011 | KOSS | P | 1,510 | $5.09 | $7,686 | 299,574 Direct | +0.51% | Acquired | -29.2% (price as of 2026-08-19) |
| Dec. 2, 2011 | KOSS | P | 1,296 | $5.15 | $6,674 | 298,064 Direct | +0.44% | Acquired | -30.0% (price as of 2026-08-19) |
| Nov. 29, 2011 | KOSS | P | 6,310 | $5.10 | $32,181 | 296,768 Direct | +2.17% | Acquired | -29.3% (price as of 2026-08-19) |
| Nov. 18, 2011 | KOSS | P | 1,063 | $5.10 | $5,421 | 290,458 Direct | +0.37% | Acquired | -29.3% (price as of 2026-08-19) |
| Nov. 16, 2011 | KOSS | P | 281 | $5.10 | $1,433 | 289,395 Direct | +0.10% | Acquired | -29.3% (price as of 2026-08-19) |
| Nov. 11, 2011 | KOSS | P | 50 | $5.10 | $255 | 289,114 Direct | +0.02% | Acquired | -29.3% (price as of 2026-08-19) |
| Nov. 8, 2011 | KOSS | P | 700 | $5.10 | $3,570 | 289,064 Direct | +0.24% | Acquired | -29.3% (price as of 2026-08-19) |
| Nov. 7, 2011 | KOSS | P | 300 | $5.10 | $1,530 | 288,364 Direct | +0.10% | Acquired | -29.3% (price as of 2026-08-19) |
| Nov. 1, 2011 | KOSS | P | 2,000 | $5.08 | $10,160 | 288,064 Direct | +0.70% | Acquired | -29.0% (price as of 2026-08-19) |
| March 16, 2011 | KOSS | P | 4,000 | $7.25 | $29,000 | 280,831 Direct | +1.44% | Acquired | -50.3% (price as of 2026-08-19) |
| March 2, 2011 | KOSS | P | 333 | $6.90 | $2,298 | 277,164 Direct | +0.12% | Acquired | -47.8% (price as of 2026-08-19) |
| March 1, 2011 | KOSS | P | 767 | $6.90 | $5,292 | 276,831 Direct | +0.28% | Acquired | -47.8% (price as of 2026-08-19) |
| Feb. 23, 2011 | KOSS | P | 4,900 | $6.77 | $33,173 | 280,964 Direct | +1.77% | Acquired | -46.8% (price as of 2026-08-19) |
| Feb. 22, 2011 | KOSS | P | 1,000 | $7.00 | $7,000 | 276,064 Direct | +0.36% | Acquired | -48.5% (price as of 2026-08-19) |
| Feb. 17, 2011 | KOSS | P | 1,000 | $6.90 | $6,900 | 275,064 Direct | +0.36% | Acquired | -47.8% (price as of 2026-08-19) |
| Feb. 16, 2011 | KOSS | P | 1,000 | $6.95 | $6,950 | 274,064 Direct | +0.37% | Acquired | -48.1% (price as of 2026-08-19) |
| Feb. 9, 2011 | KOSS | P | 5,000 | $6.28 | $31,400 | 273,064 Direct | +1.87% | Acquired | -42.6% (price as of 2026-08-19) |
| Oct. 26, 2006 | KOSS | S | 14,900 | $24.04 | $358,196 | 61,707 Direct | -19.45% | Disposed | -70.0% (price as of 2026-08-19) |
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.