DIKER MANAGEMENT LLC
CIK 1276525 · View on SEC EDGAR ↗
First SEC filing: July 15, 2010 · Latest: July 15, 2010
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- Institution The 13F filer entity this person is associated with.
- 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.
Institution
Insider at
Insider transactions
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Oct. 27, 2010 | TCX | S | 2,500,000 | $0.70 | $1,750,000 | 6,724,135 Indirect | -27.10% | Disposed | 262.5% (price as of 2026-08-20) |
| July 14, 2010 | 1276525 | S | 51,650 | $4.89 | $252,568 | 2,759,728 Indirect | -1.84% | Disposed | |
| July 13, 2010 | 1276525 | S | 42,304 | $4.88 | $206,444 | 2,811,378 Indirect | -1.48% | Disposed | |
| July 13, 2010 | 1276525 | S | 8,292 | $4.89 | $40,548 | 2,853,682 Indirect | -0.29% | Disposed | |
| July 12, 2010 | 1276525 | S | 27,900 | $4.85 | $135,315 | 2,861,974 Indirect | -0.97% | Disposed | |
| July 9, 2010 | 1276525 | S | 20,120 | $4.89 | $98,387 | 2,889,874 Indirect | -0.69% | Disposed | |
| July 9, 2010 | 1276525 | S | 45,425 | $4.92 | $223,491 | 2,909,994 Indirect | -1.54% | Disposed | |
| July 8, 2010 | 1276525 | S | 5,459 | $4.89 | $26,695 | 2,955,419 Indirect | -0.18% | Disposed | |
| July 7, 2010 | 1276525 | S | 9,641 | $4.83 | $46,566 | 2,960,878 Indirect | -0.32% | Disposed | |
| July 6, 2010 | 1276525 | S | 4,000 | $5.04 | $20,160 | 2,970,519 Indirect | -0.13% | Disposed | |
| July 2, 2010 | 1276525 | S | 3,510 | $5.01 | $17,585 | 2,974,519 Indirect | -0.12% | Disposed | |
| July 1, 2010 | 1276525 | S | 10,201 | $5.09 | $51,923 | 2,978,029 Indirect | -0.34% | Disposed | |
| June 30, 2010 | 1276525 | S | 44,400 | $5.11 | $226,884 | 2,988,230 Indirect | -1.46% | Disposed | |
| June 29, 2010 | 1276525 | S | 7,351 | $5.03 | $36,976 | 3,032,630 Indirect | -0.24% | Disposed | |
| June 28, 2010 | 1276525 | S | 13,020 | $5.22 | $67,964 | 3,039,981 Indirect | -0.43% | Disposed | |
| March 23, 2010 | TCX | S | 8,600 | $0.84 | $7,224 | 9,224,135 Indirect | -0.09% | Disposed | 202.1% (price as of 2026-08-20) |
| March 22, 2010 | TCX | S | 4,200 | $0.84 | $3,528 | 9,232,735 Indirect | -0.05% | Disposed | 202.1% (price as of 2026-08-20) |
| March 19, 2010 | TCX | S | 3,700 | $0.84 | $3,108 | 9,236,935 Indirect | -0.04% | Disposed | 202.1% (price as of 2026-08-20) |
| March 18, 2010 | TCX | S | 9,000 | $0.84 | $7,560 | 9,240,635 Indirect | -0.10% | Disposed | 202.1% (price as of 2026-08-20) |
| March 17, 2010 | TCX | S | 103,400 | $0.86 | $88,924 | 9,249,635 Indirect | -1.11% | Disposed | 195.1% (price as of 2026-08-20) |
| March 16, 2010 | TCX | S | 54,000 | $0.87 | $46,980 | 9,353,035 Indirect | -0.57% | Disposed | 191.7% (price as of 2026-08-20) |
| Feb. 22, 2010 | EFOI | S | 625,000 | $0.95 | $593,750 | 1,907,108 Indirect | -24.68% | Disposed | -99.2% (price as of 2026-08-20) |
| Dec. 31, 2009 | EFOI | S | 375,000 | $0.80 | $300,000 | 2,532,108 Indirect | -12.90% | Disposed | -99.0% (price as of 2026-08-20) |
| Nov. 2, 2009 | 1276525 | S | 25,000 | $4.22 | $105,500 | 3,053,001 Indirect | -0.81% | Disposed | |
| Oct. 29, 2009 | 1276525 | S | 25,000 | $4.22 | $105,500 | 3,078,001 Indirect | -0.81% | Disposed | |
| Oct. 28, 2009 | 1276525 | S | 75,000 | $4.22 | $316,500 | 3,103,001 Indirect | -2.36% | Disposed | |
| Oct. 22, 2009 | 1276525 | S | 25,000 | $4.17 | $104,250 | 3,178,001 Indirect | -0.78% | Disposed | |
| Oct. 21, 2009 | 1276525 | S | 30,000 | $4.20 | $126,000 | 3,203,001 Indirect | -0.93% | Disposed | |
| Oct. 8, 2009 | 1276525 | S | 25,700 | $4.19 | $107,683 | 3,233,001 Indirect | -0.79% | Disposed | |
| Oct. 7, 2009 | 1276525 | S | 5,500 | $4.23 | $23,265 | 3,258,701 Indirect | -0.17% | Disposed | |
| Oct. 6, 2009 | 1276525 | S | 10,500 | $4.20 | $44,100 | 3,264,201 Indirect | -0.32% | Disposed | |
| Oct. 5, 2009 | 1276525 | S | 14,720 | $4.14 | $60,941 | 3,274,701 Indirect | -0.45% | Disposed | |
| Oct. 2, 2009 | 1276525 | S | 6,576 | $4.15 | $27,290 | 3,289,421 Indirect | -0.20% | Disposed | |
| Oct. 1, 2009 | 1276525 | S | 9,355 | $4.15 | $38,823 | 3,295,997 Indirect | -0.28% | Disposed | |
| Aug. 27, 2009 | 1276525 | P | 9,000 | $2.45 | $22,050 | 2,143,285 Indirect | +0.42% | Acquired | |
| Aug. 26, 2009 | 1276525 | P | 16,800 | $2.36 | $39,648 | 2,134,285 Indirect | +0.79% | Acquired | |
| Aug. 13, 2009 | 1276525 | P | 3,010 | $1.98 | $5,960 | 2,117,485 Indirect | +0.14% | Acquired | |
| Aug. 12, 2009 | 1276525 | S | 5,000 | $3.80 | $19,000 | 3,305,352 Indirect | -0.15% | Disposed | |
| Aug. 12, 2009 | 1276525 | P | 21,270 | $1.96 | $41,689 | 2,114,475 Indirect | +1.02% | Acquired | |
| Aug. 10, 2009 | 1276525 | S | 1,166 | $3.85 | $4,489 | 3,310,352 Indirect | -0.04% | Disposed | |
| Aug. 7, 2009 | 1276525 | P | 22,500 | $1.84 | $41,400 | 2,093,205 Indirect | +1.09% | Acquired | |
| Aug. 7, 2009 | 1276525 | S | 25,834 | $3.77 | $97,394 | 3,311,518 Indirect | -0.77% | Disposed | |
| Aug. 6, 2009 | 1276525 | S | 4,600 | $3.79 | $17,434 | 3,337,352 Indirect | -0.14% | Disposed | |
| Aug. 5, 2009 | 1276525 | S | 5,000 | $3.82 | $19,100 | 3,341,952 Indirect | -0.15% | Disposed | |
| Aug. 4, 2009 | 1276525 | S | 15,000 | $3.84 | $57,600 | 3,346,952 Indirect | -0.45% | Disposed | |
| Aug. 3, 2009 | 1276525 | S | 8,182 | $3.82 | $31,255 | 3,361,952 Indirect | -0.24% | Disposed | |
| July 31, 2009 | 1276525 | S | 5,000 | $3.92 | $19,600 | 3,370,134 Indirect | -0.15% | Disposed | |
| July 30, 2009 | 1276525 | S | 853 | $4.05 | $3,455 | 3,375,134 Indirect | -0.03% | Disposed | |
| July 29, 2009 | 1276525 | P | 5,400 | $1.62 | $8,748 | 2,070,705 Indirect | +0.26% | Acquired | |
| July 28, 2009 | 1276525 | P | 11,700 | $1.61 | $18,837 | 2,065,305 Indirect | +0.57% | Acquired | |
| July 28, 2009 | 1276525 | S | 6,719 | $4.12 | $27,682 | 3,375,987 Indirect | -0.20% | Disposed | |
| July 27, 2009 | 1276525 | S | 46,405 | $4.09 | $189,796 | 3,382,706 Indirect | -1.35% | Disposed | |
| July 24, 2009 | 1276525 | S | 20,000 | $3.97 | $79,400 | 3,429,111 Indirect | -0.58% | Disposed | |
| July 23, 2009 | 1276525 | S | 29,200 | $3.94 | $115,048 | 3,449,111 Indirect | -0.84% | Disposed | |
| July 22, 2009 | 1276525 | S | 30,897 | $3.73 | $115,246 | 3,478,311 Indirect | -0.88% | Disposed | |
| July 21, 2009 | 1276525 | S | 14,381 | $4.02 | $57,812 | 3,509,208 Indirect | -0.41% | Disposed | |
| June 24, 2009 | 1276525 | P | 11,400 | $1.74 | $19,836 | 2,053,605 Indirect | +0.56% | Acquired | |
| June 22, 2009 | 1276525 | P | 22,500 | $1.65 | $37,125 | 2,042,205 Indirect | +1.11% | Acquired | |
| June 19, 2009 | 1276525 | P | 23,000 | $1.64 | $37,720 | 2,019,705 Indirect | +1.15% | Acquired | |
| June 11, 2009 | 1276525 | P | 21,600 | $1.74 | $37,584 | 1,996,705 Indirect | +1.09% | Acquired | |
| June 10, 2009 | 1276525 | P | 29,000 | $1.52 | $44,080 | 1,975,105 Indirect | +1.49% | Acquired | |
| June 8, 2009 | 1276525 | S | 1,000 | $1.36 | $1,360 | 1,946,105 Indirect | -0.05% | Disposed | |
| June 8, 2009 | 1276525 | P | 29,800 | $1.41 | $42,018 | 1,947,105 Indirect | +1.55% | Acquired | |
| June 5, 2009 | 1276525 | P | 67,896 | $1.31 | $88,944 | 1,917,305 Indirect | +3.67% | Acquired | |
| April 30, 2009 | 1276525 | P | 15,885 | $2.37 | $37,647 | 1,849,409 Indirect | +0.87% | Acquired | |
| March 5, 2009 | 1276525 | P | 11,385 | $0.58 | $6,603 | 2,920,731 Indirect | +0.39% | Acquired | |
| March 4, 2009 | 1276525 | P | 9,622 | $0.52 | $5,003 | 2,909,346 Indirect | +0.33% | Acquired | |
| Dec. 26, 2008 | 1276525 | S | 1,500,000 | $0.09 | $135,000 | 1,620,153 Indirect | -48.07% | Disposed | |
| Dec. 11, 2008 | 1276525 | P | 201,400 | $0.75 | $151,050 | 2,899,724 Indirect | +7.46% | Acquired | |
| Dec. 10, 2008 | 1276525 | P | 139,700 | $0.76 | $106,172 | 2,676,955 Indirect | +5.51% | Acquired | |
| Dec. 10, 2008 | 1276525 | P | 385 | $0.62 | $239 | 2,698,324 Indirect | +0.01% | Acquired | |
| Dec. 9, 2008 | 1276525 | P | 8,597 | $0.73 | $6,276 | 2,697,939 Indirect | +0.32% | Acquired | |
| Dec. 8, 2008 | 1276525 | P | 31,532 | $0.66 | $20,811 | 2,689,342 Indirect | +1.19% | Acquired | |
| Nov. 4, 2008 | 1276525 | P | 992,000 | $0.17 | $168,640 | 7,120,199 Indirect | +16.19% | Acquired | |
| Oct. 14, 2008 | 1276525 | P | 163,006 | $1.83 | $298,301 | 1,338,813 Indirect | -10.85% | Disposed | |
| Oct. 13, 2008 | 1276525 | P | 166,100 | $1.83 | $303,963 | 1,501,819 Indirect | -9.96% | Disposed | |
| July 14, 2008 | 1276525 | P | 14,700 | $1.44 | $21,168 | 2,657,810 Indirect | +0.56% | Acquired | |
| July 11, 2008 | 1276525 | P | 4,950 | $1.30 | $6,435 | 2,643,110 Indirect | +0.19% | Acquired | |
| July 10, 2008 | 1276525 | P | 17,641 | $1.37 | $24,168 | 2,638,160 Indirect | +0.67% | Acquired | |
| July 9, 2008 | 1276525 | P | 72,900 | $1.42 | $103,518 | 2,620,519 Indirect | +2.86% | Acquired | |
| April 4, 2008 | 1276525 | P | 17,000 | $9.33 | $158,610 | 1,833,524 Indirect | +0.94% | Acquired | |
| March 26, 2008 | 1276525 | P | 8,000 | $2.54 | $20,320 | 2,547,619 Indirect | +0.32% | Acquired | |
| March 25, 2008 | 1276525 | P | 12,724 | $2.49 | $31,683 | 2,539,619 Indirect | +0.50% | Acquired | |
| March 24, 2008 | 1276525 | P | 15,601 | $2.42 | $37,754 | 2,526,895 Indirect | +0.62% | Acquired | |
| Feb. 29, 2008 | 1276525 | P | 5,000 | $7.94 | $39,700 | 1,816,524 Indirect | +0.28% | Acquired | |
| Feb. 28, 2008 | 1276525 | P | 14,100 | $8.06 | $113,646 | 1,811,524 Indirect | +0.78% | Acquired | |
| Feb. 25, 2008 | 1276525 | P | 16,000 | $8.21 | $131,360 | 1,797,424 Indirect | +0.90% | Acquired | |
| Feb. 22, 2008 | 1276525 | P | 10,200 | $8.42 | $85,884 | 1,781,424 Indirect | +0.58% | Acquired | |
| Feb. 21, 2008 | 1276525 | P | 30,000 | $8.47 | $254,100 | 1,771,224 Indirect | +1.72% | Acquired | |
| Jan. 17, 2008 | 1276525 | P | 8,700 | $8.60 | $74,820 | 1,741,224 Indirect | +0.50% | Acquired | |
| Jan. 16, 2008 | 1276525 | P | 50,000 | $8.82 | $441,000 | 1,732,524 Indirect | +2.97% | Acquired | |
| Jan. 10, 2008 | 1276525 | P | 137,000 | $4.62 | $632,940 | 3,523,589 Indirect | +4.05% | Acquired | |
| Jan. 9, 2008 | 1276525 | P | 80,700 | $4.43 | $357,501 | 3,386,589 Indirect | +2.44% | Acquired | |
| Dec. 21, 2007 | 1276525 | P | 97,600 | $5.09 | $496,784 | 3,305,889 Indirect | +3.04% | Acquired | |
| Dec. 14, 2007 | 1276525 | P | 35,000 | $6.19 | $216,650 | 2,537,255 Indirect | +1.40% | Acquired | |
| Dec. 14, 2007 | 1276525 | P | 135,000 | $6.13 | $827,550 | 2,537,255 Indirect | +5.62% | Acquired | |
| Dec. 11, 2007 | 1276525 | P | 37,000 | $4.76 | $176,120 | 3,760,600 Indirect | +0.99% | Acquired | |
| Dec. 10, 2007 | 1276525 | P | 29,100 | $4.64 | $135,024 | 3,723,600 Indirect | +0.79% | Acquired | |
| Dec. 7, 2007 | 1276525 | P | 87,300 | $4.42 | $385,866 | 3,694,500 Indirect | +2.42% | Acquired | |
| Nov. 28, 2007 | 1276525 | P | 7,600 | $3.72 | $28,272 | 1,667,919 Indirect | +0.46% | Acquired |
Showing latest 100 of 240 transactions
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 |
|---|---|---|---|---|---|---|---|
| June 29, 2006 | 1276525 | Warrants | Common stock (37,500) | $4.28 | June 15, 2010 | 37,500 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 2 holdings
Securities held when first becoming an insider, per SEC Form 3.