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David R Welland
Insider
First SEC filing: Feb. 3, 2014 · Latest: Feb. 3, 2014
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
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 |
|---|---|---|---|---|---|---|---|---|---|
| Nov. 20, 2014 | SLAB | G | 40,000 | · | · | 1,713,131 Direct | -2.28% | Disposed | (price as of 2026-10-06) |
| Nov. 20, 2014 | SLAB | G | 70,000 | · | · | 1,643,131 Direct | -4.09% | Disposed | (price as of 2026-10-06) |
| Feb. 19, 2014 | SLAB | G | 9,000 | · | · | 1,753,131 Direct | -0.51% | Disposed | (price as of 2026-10-06) |
| Feb. 12, 2014 | SLAB | G | 40,000 | · | · | 1,762,131 Direct | -2.22% | Disposed | (price as of 2026-10-06) |
| April 17, 2007 | SLAB | S | 30,000 | $31.62 | $948,600 | 2,292,131 Direct | -1.29% | Disposed | 604.0% (price as of 2026-10-06) |
| April 3, 2007 | SLAB | S | 30,000 | $29.95 | $898,500 | 2,322,131 Direct | -1.28% | Disposed | 643.3% (price as of 2026-10-06) |
| March 20, 2007 | SLAB | S | 30,000 | $29.43 | $882,900 | 2,352,131 Direct | -1.26% | Disposed | 656.4% (price as of 2026-10-06) |
| March 6, 2007 | SLAB | S | 30,000 | $29.59 | $887,700 | 2,382,131 Direct | -1.24% | Disposed | 652.3% (price as of 2026-10-06) |
| Feb. 20, 2007 | SLAB | S | 30,000 | $31.78 | $953,400 | 2,412,131 Direct | -1.23% | Disposed | 600.5% (price as of 2026-10-06) |
| Feb. 6, 2007 | SLAB | S | 30,000 | $33.18 | $995,400 | 2,442,131 Direct | -1.21% | Disposed | 570.9% (price as of 2026-10-06) |
| Jan. 16, 2007 | SLAB | S | 30,000 | $34.05 | $1,021,500 | 2,472,131 Direct | -1.20% | Disposed | 553.8% (price as of 2026-10-06) |
| Jan. 3, 2007 | SLAB | S | 30,000 | $34.80 | $1,044,000 | 2,502,131 Direct | -1.18% | Disposed | 539.7% (price as of 2026-10-06) |
| Dec. 19, 2006 | SLAB | S | 30,000 | $34.75 | $1,042,500 | 2,532,131 Direct | -1.17% | Disposed | 540.6% (price as of 2026-10-06) |
| Dec. 5, 2006 | SLAB | S | 30,000 | $32.59 | $977,700 | 2,562,131 Direct | -1.16% | Disposed | 583.1% (price as of 2026-10-06) |
| Nov. 21, 2006 | SLAB | S | 30,000 | $34.58 | $1,037,400 | 2,592,131 Direct | -1.14% | Disposed | 543.8% (price as of 2026-10-06) |
| Nov. 7, 2006 | SLAB | S | 30,000 | $33.28 | $998,400 | 2,622,131 Direct | -1.13% | Disposed | 568.9% (price as of 2026-10-06) |
| Oct. 17, 2006 | SLAB | S | 30,000 | $35.26 | $1,057,800 | 2,652,131 Direct | -1.12% | Disposed | 531.4% (price as of 2026-10-06) |
| Oct. 3, 2006 | SLAB | S | 30,000 | $30.03 | $900,900 | 2,682,131 Direct | -1.11% | Disposed | 641.3% (price as of 2026-10-06) |
| Sept. 19, 2006 | SLAB | S | 30,000 | $32.18 | $965,400 | 2,712,131 Direct | -1.09% | Disposed | 591.8% (price as of 2026-10-06) |
| Sept. 5, 2006 | SLAB | S | 30,000 | $32.96 | $988,800 | 2,742,131 Direct | -1.08% | Disposed | 575.4% (price as of 2026-10-06) |
| Aug. 15, 2006 | SLAB | S | 30,000 | $34.31 | $1,029,300 | 2,772,131 Direct | -1.07% | Disposed | 548.8% (price as of 2026-10-06) |
| Aug. 1, 2006 | SLAB | S | 30,000 | $35.47 | $1,064,100 | 2,802,131 Direct | -1.06% | Disposed | 527.6% (price as of 2026-10-06) |
| July 18, 2006 | SLAB | S | 30,000 | $30.46 | $913,800 | 2,832,131 Direct | -1.05% | Disposed | 630.9% (price as of 2026-10-06) |
| July 5, 2006 | SLAB | S | 30,000 | $33.26 | $997,800 | 2,862,131 Direct | -1.04% | Disposed | 569.3% (price as of 2026-10-06) |
| June 20, 2006 | SLAB | S | 30,000 | $31.90 | $957,000 | 2,892,131 Direct | -1.03% | Disposed | 597.9% (price as of 2026-10-06) |
| June 6, 2006 | SLAB | G | 15,000 | · | · | 2,952,131 Direct | -0.51% | Disposed | (price as of 2026-10-06) |
| June 6, 2006 | SLAB | S | 30,000 | $36.14 | $1,084,200 | 2,922,131 Direct | -1.02% | Disposed | 516.0% (price as of 2026-10-06) |
| June 5, 2006 | SLAB | G | 18,000 | · | · | 2,967,131 Direct | -0.60% | Disposed | (price as of 2026-10-06) |
| May 16, 2006 | SLAB | S | 30,000 | $41.12 | $1,233,600 | 2,985,131 Direct | -0.99% | Disposed | 441.4% (price as of 2026-10-06) |
| May 2, 2006 | SLAB | S | 30,000 | $47.18 | $1,415,400 | 3,015,131 Direct | -0.99% | Disposed | 371.9% (price as of 2026-10-06) |
| April 18, 2006 | SLAB | S | 30,000 | $55.14 | $1,654,200 | 3,045,131 Direct | -0.98% | Disposed | 303.7% (price as of 2026-10-06) |
| April 4, 2006 | SLAB | S | 30,000 | $57.85 | $1,735,500 | 3,075,131 Direct | -0.97% | Disposed | 284.8% (price as of 2026-10-06) |
| March 21, 2006 | SLAB | S | 30,000 | $48.47 | $1,454,100 | 3,105,131 Direct | -0.96% | Disposed | 359.3% (price as of 2026-10-06) |
| March 7, 2006 | SLAB | S | 30,000 | $47.78 | $1,433,400 | 3,135,131 Direct | -0.95% | Disposed | 365.9% (price as of 2026-10-06) |
| Feb. 21, 2006 | SLAB | S | 30,000 | $45.85 | $1,375,500 | 3,165,131 Direct | -0.94% | Disposed | 385.5% (price as of 2026-10-06) |
| Feb. 7, 2006 | SLAB | S | 30,000 | $48.44 | $1,453,200 | 3,195,131 Direct | -0.93% | Disposed | 359.6% (price as of 2026-10-06) |
| Jan. 17, 2006 | SLAB | S | 30,000 | $39.92 | $1,197,600 | 3,225,131 Direct | -0.92% | Disposed | 457.7% (price as of 2026-10-06) |
| Jan. 3, 2006 | SLAB | S | 30,000 | $36.74 | $1,102,200 | 3,255,131 Direct | -0.91% | Disposed | 505.9% (price as of 2026-10-06) |
| Dec. 20, 2005 | SLAB | S | 30,000 | $36.88 | $1,106,400 | 3,285,131 Direct | -0.90% | Disposed | 503.6% (price as of 2026-10-06) |
| Dec. 6, 2005 | SLAB | S | 30,000 | $40.05 | $1,201,500 | 3,315,131 Direct | -0.90% | Disposed | 455.9% (price as of 2026-10-06) |
| Nov. 15, 2005 | SLAB | S | 30,000 | $37.30 | $1,119,000 | 3,345,131 Direct | -0.89% | Disposed | 496.8% (price as of 2026-10-06) |
| Nov. 1, 2005 | SLAB | S | 30,000 | $31.55 | $946,500 | 3,375,131 Direct | -0.88% | Disposed | 605.6% (price as of 2026-10-06) |
| Oct. 27, 2005 | SLAB | G | 30,000 | · | · | 3,405,131 Direct | -0.87% | Disposed | (price as of 2026-10-06) |
| Oct. 18, 2005 | SLAB | S | 30,000 | $27.32 | $819,600 | 3,435,131 Direct | -0.87% | Disposed | 714.9% (price as of 2026-10-06) |
| Oct. 4, 2005 | SLAB | S | 30,000 | $30.70 | $921,000 | 3,465,131 Direct | -0.86% | Disposed | 625.1% (price as of 2026-10-06) |
| Sept. 20, 2005 | SLAB | S | 30,000 | $31.53 | $945,900 | 3,495,131 Direct | -0.85% | Disposed | 606.1% (price as of 2026-10-06) |
| Sept. 6, 2005 | SLAB | S | 30,000 | $31.48 | $944,400 | 3,525,131 Direct | -0.84% | Disposed | 607.2% (price as of 2026-10-06) |
| Aug. 16, 2005 | SLAB | S | 30,000 | $30.66 | $919,800 | 3,555,131 Direct | -0.84% | Disposed | 626.1% (price as of 2026-10-06) |
| Aug. 2, 2005 | SLAB | S | 30,000 | $29.35 | $880,500 | 3,585,131 Direct | -0.83% | Disposed | 658.5% (price as of 2026-10-06) |
| July 19, 2005 | SLAB | S | 30,000 | $27.22 | $816,600 | 3,615,131 Direct | -0.82% | Disposed | 717.9% (price as of 2026-10-06) |
| July 6, 2005 | SLAB | G | 20,000 | · | · | 3,645,131 Direct | -0.55% | Disposed | (price as of 2026-10-06) |
| July 5, 2005 | SLAB | S | 30,000 | $26.19 | $785,700 | 3,665,131 Direct | -0.81% | Disposed | 750.0% (price as of 2026-10-06) |
| June 21, 2005 | SLAB | S | 30,000 | $28.04 | $841,200 | 3,695,131 Direct | -0.81% | Disposed | 693.9% (price as of 2026-10-06) |
| June 7, 2005 | SLAB | S | 30,000 | $28.18 | $845,400 | 3,725,131 Direct | -0.80% | Disposed | 690.0% (price as of 2026-10-06) |
| May 17, 2005 | SLAB | S | 30,000 | $25.88 | $776,400 | 3,755,131 Direct | -0.79% | Disposed | 760.2% (price as of 2026-10-06) |
| May 3, 2005 | SLAB | S | 30,000 | $25.10 | $753,000 | 3,785,131 Direct | -0.79% | Disposed | 786.9% (price as of 2026-10-06) |
| April 19, 2005 | SLAB | S | 20,000 | $29.28 | $585,600 | 3,815,131 Direct | -0.52% | Disposed | 660.3% (price as of 2026-10-06) |
| April 5, 2005 | SLAB | S | 30,000 | $29.29 | $878,700 | 3,835,131 Direct | -0.78% | Disposed | 660.1% (price as of 2026-10-06) |
| March 15, 2005 | SLAB | S | 30,000 | $31.26 | $937,800 | 3,865,131 Direct | -0.77% | Disposed | 612.2% (price as of 2026-10-06) |
| March 1, 2005 | SLAB | S | 30,000 | $35.28 | $1,058,400 | 3,895,131 Direct | -0.76% | Disposed | 531.0% (price as of 2026-10-06) |
| Feb. 15, 2005 | SLAB | S | 30,000 | $35.96 | $1,078,800 | 3,925,131 Direct | -0.76% | Disposed | 519.1% (price as of 2026-10-06) |
| Feb. 1, 2005 | SLAB | S | 30,000 | $34.01 | $1,020,300 | 3,955,131 Direct | -0.75% | Disposed | 554.6% (price as of 2026-10-06) |
| Jan. 18, 2005 | SLAB | S | 20,000 | $30.86 | $617,200 | 3,985,131 Direct | -0.50% | Disposed | 621.4% (price as of 2026-10-06) |
| Jan. 4, 2005 | SLAB | S | 30,000 | $33.46 | $1,003,800 | 4,005,131 Direct | -0.74% | Disposed | 565.3% (price as of 2026-10-06) |
| Dec. 21, 2004 | SLAB | S | 30,000 | $34.62 | $1,038,600 | 4,035,131 Direct | -0.74% | Disposed | 543.0% (price as of 2026-10-06) |
| Dec. 7, 2004 | SLAB | S | 30,000 | $33.89 | $1,016,700 | 4,065,131 Direct | -0.73% | Disposed | 556.9% (price as of 2026-10-06) |
| Dec. 2, 2004 | SLAB | G | 35,000 | · | · | 4,095,131 Direct | -0.85% | Disposed | (price as of 2026-10-06) |
| Nov. 16, 2004 | SLAB | S | 30,000 | $30.90 | $927,000 | 4,130,131 Direct | -0.72% | Disposed | 620.5% (price as of 2026-10-06) |
| Nov. 2, 2004 | SLAB | S | 30,000 | $30.57 | $917,100 | 4,160,131 Direct | -0.72% | Disposed | 628.2% (price as of 2026-10-06) |
| Oct. 19, 2004 | SLAB | S | 20,000 | $33.95 | $679,000 | 4,190,131 Direct | -0.48% | Disposed | 555.7% (price as of 2026-10-06) |
| Oct. 5, 2004 | SLAB | S | 30,000 | $35.91 | $1,077,300 | 4,210,131 Direct | -0.71% | Disposed | 519.9% (price as of 2026-10-06) |
| Sept. 21, 2004 | SLAB | S | 30,000 | $37.03 | $1,110,900 | 4,240,131 Direct | -0.70% | Disposed | 501.2% (price as of 2026-10-06) |
| Sept. 7, 2004 | SLAB | S | 30,000 | $30.98 | $929,400 | 4,270,131 Direct | -0.70% | Disposed | 618.6% (price as of 2026-10-06) |
| Aug. 17, 2004 | SLAB | S | 30,000 | $31.35 | $940,500 | 4,300,131 Direct | -0.69% | Disposed | 610.1% (price as of 2026-10-06) |
| Aug. 3, 2004 | SLAB | S | 30,000 | $34.92 | $1,047,600 | 4,330,131 Direct | -0.69% | Disposed | 537.5% (price as of 2026-10-06) |
| July 20, 2004 | SLAB | S | 20,000 | $42.23 | $844,600 | 4,360,131 Direct | -0.46% | Disposed | 427.2% (price as of 2026-10-06) |
| July 6, 2004 | SLAB | S | 30,000 | $42.21 | $1,266,300 | 4,380,131 Direct | -0.68% | Disposed | 427.4% (price as of 2026-10-06) |
| June 15, 2004 | SLAB | S | 30,000 | $47.45 | $1,423,500 | 4,410,131 Direct | -0.68% | Disposed | 369.2% (price as of 2026-10-06) |
| June 1, 2004 | SLAB | S | 30,000 | $51.61 | $1,548,300 | 4,440,131 Direct | -0.67% | Disposed | 331.4% (price as of 2026-10-06) |
| May 18, 2004 | SLAB | S | 30,000 | $47.90 | $1,437,000 | 4,470,131 Direct | -0.67% | Disposed | 364.8% (price as of 2026-10-06) |
| May 4, 2004 | SLAB | S | 30,000 | $48.06 | $1,441,800 | 4,500,131 Direct | -0.66% | Disposed | 363.2% (price as of 2026-10-06) |
| April 20, 2004 | SLAB | S | 20,000 | $53.13 | $1,062,600 | 4,530,131 Direct | -0.44% | Disposed | 319.0% (price as of 2026-10-06) |
| April 6, 2004 | SLAB | S | 30,000 | $56.90 | $1,707,000 | 4,550,131 Direct | -0.66% | Disposed | 291.2% (price as of 2026-10-06) |
| March 23, 2004 | SLAB | G | 10,000 | · | · | 4,580,131 Direct | -0.22% | Disposed | (price as of 2026-10-06) |
| March 16, 2004 | SLAB | S | 30,000 | $54.66 | $1,639,800 | 4,590,131 Direct | -0.65% | Disposed | 307.3% (price as of 2026-10-06) |
| March 2, 2004 | SLAB | S | 30,000 | $58.51 | $1,755,300 | 4,620,131 Direct | -0.65% | Disposed | 280.5% (price as of 2026-10-06) |
| Feb. 17, 2004 | SLAB | S | 30,000 | $54.86 | $1,645,800 | 4,650,131 Direct | -0.64% | Disposed | 305.8% (price as of 2026-10-06) |
| Feb. 3, 2004 | SLAB | S | 30,000 | $49.76 | $1,492,800 | 4,680,131 Direct | -0.64% | Disposed | 347.4% (price as of 2026-10-06) |
| Jan. 20, 2004 | SLAB | S | 20,000 | $49.77 | $995,400 | 4,710,131 Direct | -0.42% | Disposed | 347.3% (price as of 2026-10-06) |
| Jan. 6, 2004 | SLAB | S | 30,000 | $46.15 | $1,384,500 | 4,730,131 Direct | -0.63% | Disposed | 382.4% (price as of 2026-10-06) |
| Dec. 16, 2003 | SLAB | S | 30,000 | $40.80 | $1,224,000 | 4,760,131 Direct | -0.63% | Disposed | 445.6% (price as of 2026-10-06) |
| Dec. 2, 2003 | SLAB | S | 30,000 | $48.90 | $1,467,000 | 4,790,131 Direct | -0.62% | Disposed | 355.3% (price as of 2026-10-06) |
| Nov. 18, 2003 | SLAB | S | 30,000 | $48.16 | $1,444,800 | 4,820,131 Direct | -0.62% | Disposed | 362.3% (price as of 2026-10-06) |
| Nov. 4, 2003 | SLAB | S | 30,000 | $54.33 | $1,629,900 | 4,850,131 Direct | -0.61% | Disposed | 309.8% (price as of 2026-10-06) |
| Oct. 21, 2003 | SLAB | S | 20,000 | $53.88 | $1,077,600 | 4,880,131 Direct | -0.41% | Disposed | 313.2% (price as of 2026-10-06) |
| Oct. 7, 2003 | SLAB | S | 30,000 | $49.84 | $1,495,200 | 4,900,131 Direct | -0.61% | Disposed | 346.7% (price as of 2026-10-06) |
| Sept. 16, 2003 | SLAB | S | 30,000 | $50.16 | $1,504,800 | 4,930,131 Direct | -0.60% | Disposed | 343.8% (price as of 2026-10-06) |
| Sept. 2, 2003 | SLAB | S | 30,000 | $44.21 | $1,326,300 | 4,960,131 Direct | -0.60% | Disposed | 403.6% (price as of 2026-10-06) |
| Aug. 19, 2003 | SLAB | S | 30,000 | $39.14 | $1,174,200 | 4,990,131 Direct | -0.60% | Disposed | 468.8% (price as of 2026-10-06) |
| Aug. 5, 2003 | SLAB | S | 30,000 | $36.18 | $1,085,400 | 5,020,131 Direct | -0.59% | Disposed | 515.3% (price as of 2026-10-06) |
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.