SEC CIK 1388177
Billerbeck Darin G
Reported ownership across 2 companies, sourced from SEC Form 4 filings and updated daily.
Current Positions
| Company | Shares Owned | As Of |
|---|---|---|
| LSCCview stock → | 633,823 | 2018-05-31 |
| MRAMview stock → | 127,925 | 2026-05-21 |
Position History — LSCC
Reported shares owned immediately after each Form 4 transaction, over time.
Recent Filings — LSCC
| Date | Activity | Shares | Price | Owned After |
|---|---|---|---|---|
| 2018-05-31 | Option exercise (derivative) | 226,608 | $0.00 | 188,614 |
| 2018-05-31 | Tax withholding | 109,570 | $5.75 | 633,823 |
| 2018-05-31 | Option exercise | 226,608 | $0.00 | 743,393 |
| 2018-02-13 | Option exercise (derivative) | 10,437 | $0.00 | 415,222 |
| 2018-02-13 | Tax withholding | 3,481 | $5.91 | 516,785 |
| 2018-02-13 | Option exercise | 10,437 | $0.00 | 520,266 |
| 2018-02-11 | Option exercise (derivative) | 6,162 | $0.00 | 425,659 |
| 2018-02-11 | Tax withholding | 2,088 | $6.01 | 509,829 |
| 2018-02-11 | Option exercise | 6,162 | $0.00 | 511,917 |
| 2018-02-06 | Option exercise (derivative) | 10,246 | $0.00 | 431,821 |
| 2018-02-06 | Tax withholding | 3,961 | $6.08 | 505,755 |
| 2018-02-06 | Option exercise | 10,246 | $0.00 | 509,716 |
| 2017-11-13 | Option exercise (derivative) | 10,438 | $0.00 | 442,067 |
| 2017-11-13 | Tax withholding | 5,319 | $6.51 | 499,470 |
| 2017-11-13 | Option exercise | 10,438 | $0.00 | 504,789 |
| 2017-11-11 | Option exercise (derivative) | 6,162 | $0.00 | 452,505 |
| 2017-11-11 | Tax withholding | 3,140 | $6.51 | 494,351 |
| 2017-11-11 | Option exercise | 6,162 | $0.00 | 497,491 |
| 2017-11-06 | Option exercise (derivative) | 10,245 | $0.00 | 458,667 |
| 2017-11-06 | Tax withholding | 5,220 | $5.92 | 491,329 |
| 2017-11-06 | Option exercise | 10,245 | $0.00 | 496,549 |
| 2017-11-03 | Grant / award (derivative) | 70,000 | $0.00 | 468,912 |
| 2017-10-18 | Grant / award (derivative) | 210,300 | $0.00 | 398,912 |
| 2017-10-18 | Option exercise (derivative) | 574,600 | $0.00 | 0 |
| 2017-10-18 | Grant / award (derivative) | 256,500 | $0.00 | 256,500 |
| 2017-10-18 | Grant / award (derivative) | 177,900 | $0.00 | 177,900 |
| 2017-10-18 | Option exercise | 574,600 | $4.86 | 1,018,111 |
| 2017-10-18 | Tax withholding | 531,807 | $5.73 | 486,304 |
| 2017-10-18 | Option exercise (derivative) | 574,600 | $0.00 | 0 |
| 2017-10-18 | Option exercise | 574,600 | $4.86 | 1,018,111 |
| 2017-10-18 | Tax withholding | 531,807 | $5.73 | 486,304 |
| 2017-08-13 | Option exercise (derivative) | 10,437 | $0.00 | 188,612 |
| 2017-08-13 | Option exercise | 10,437 | $0.00 | 448,829 |
| 2017-08-13 | Tax withholding | 5,318 | $5.93 | 443,511 |
| 2017-08-11 | Option exercise (derivative) | 6,162 | $0.00 | 199,049 |
| 2017-08-11 | Option exercise | 6,162 | $0.00 | 441,532 |
| 2017-08-11 | Tax withholding | 3,140 | $6.03 | 438,392 |
| 2017-08-06 | Option exercise (derivative) | 10,246 | $0.00 | 205,211 |
| 2017-08-06 | Tax withholding | 5,221 | $6.70 | 435,370 |
| 2017-08-06 | Option exercise | 10,246 | $0.00 | 440,591 |
| 2017-05-13 | Option exercise (derivative) | 41,750 | $0.00 | 215,457 |
| 2017-05-13 | Tax withholding | 15,177 | $6.99 | 430,345 |
| 2017-05-13 | Option exercise | 41,750 | $0.00 | 445,522 |
| 2017-05-11 | Option exercise (derivative) | 6,162 | $0.00 | 257,207 |
| 2017-05-11 | Tax withholding | 2,240 | $7.03 | 403,772 |
| 2017-05-11 | Option exercise | 6,162 | $0.00 | 406,012 |
| 2017-05-06 | Option exercise (derivative) | 10,246 | $0.00 | 263,369 |
| 2017-05-06 | Option exercise | 10,246 | $0.00 | 403,575 |
| 2017-05-06 | Tax withholding | 3,725 | $6.64 | 399,850 |
| 2017-02-11 | Option exercise (derivative) | 6,162 | $0.00 | 273,615 |
| 2017-02-11 | Tax withholding | 2,185 | $6.97 | 393,329 |
| 2017-02-11 | Option exercise | 6,162 | $0.00 | 395,514 |
| 2017-02-06 | Option exercise (derivative) | 10,246 | $0.00 | 279,777 |
| 2017-02-06 | Tax withholding | 4,239 | $7.13 | 389,352 |
| 2017-02-06 | Option exercise | 10,246 | $0.00 | 393,591 |
| 2016-11-11 | Option exercise (derivative) | 6,162 | $0.00 | 290,023 |
| 2016-11-11 | Tax withholding | 2,870 | $7.72 | 383,345 |
| 2016-11-11 | Option exercise | 6,162 | $0.00 | 386,215 |
| 2016-11-06 | Tax withholding | 3,725 | $7.86 | 380,053 |
| 2016-08-11 | Option exercise (derivative) | 6,162 | $0.00 | 306,431 |
| 2016-08-11 | Option exercise | 6,162 | $0.00 | 375,772 |
| 2016-08-11 | Tax withholding | 2,240 | $5.75 | 373,532 |
| 2016-08-06 | Option exercise (derivative) | 10,246 | $0.00 | 312,593 |
| 2016-08-06 | Option exercise | 10,246 | $0.00 | 373,335 |
| 2016-08-06 | Tax withholding | 3,725 | $6.14 | 369,610 |
| 2016-05-13 | Grant / award (derivative) | 167,000 | $0.00 | 322,839 |
| 2016-05-13 | Grant / award (derivative) | 139,900 | $0.00 | 341,900 |
| 2016-05-13 | Grant / award (derivative) | 202,000 | $0.00 | 202,000 |
| 2016-05-11 | Option exercise (derivative) | 6,162 | $0.00 | 155,839 |
| 2016-05-11 | Tax withholding | 2,240 | $5.52 | 363,089 |
| 2016-05-11 | Option exercise | 6,162 | $0.00 | 365,329 |
| 2016-05-06 | Option exercise (derivative) | 10,245 | $0.00 | 162,001 |
| 2016-05-06 | Tax withholding | 3,725 | $5.31 | 359,167 |
| 2016-05-06 | Option exercise | 10,245 | $0.00 | 362,892 |
| 2016-02-11 | Option exercise (derivative) | 6,162 | $0.00 | 172,246 |
| 2016-02-11 | Tax withholding | 2,240 | $4.32 | 352,647 |
| 2016-02-11 | Option exercise | 6,162 | $0.00 | 354,887 |
| 2016-02-06 | Option exercise (derivative) | 40,984 | $0.00 | 178,408 |
| 2016-02-06 | Tax withholding | 15,436 | $4.65 | 348,725 |
| 2016-02-06 | Option exercise | 40,984 | $0.00 | 364,161 |
| 2015-11-11 | Option exercise (derivative) | 6,162 | $0.00 | 219,392 |
| 2015-11-11 | Tax withholding | 3,140 | $5.07 | 323,177 |
| 2015-11-11 | Option exercise | 6,162 | $0.00 | 326,317 |
| 2015-11-06 | Option exercise (derivative) | 10,246 | $0.00 | 296,185 |
| 2015-11-06 | Option exercise | 10,246 | $0.00 | 383,778 |
| 2015-08-17 | Open-market buy | 6,000 | $4.00 | 320,155 |
| 2015-08-13 | Open-market buy | 6,140 | $4.07 | 314,155 |
| 2015-08-11 | Option exercise (derivative) | 6,162 | $0.00 | 225,554 |
| 2015-08-11 | Option exercise | 6,162 | $0.00 | 311,155 |
| 2015-08-11 | Tax withholding | 3,140 | $4.15 | 308,015 |
| 2015-05-11 | Option exercise (derivative) | 6,162 | $0.00 | 231,716 |
| 2015-05-11 | Option exercise | 6,162 | $0.00 | 308,133 |
| 2015-05-11 | Tax withholding | 3,140 | $6.21 | 304,993 |
| 2015-03-30 | Option exercise (derivative) | 12,967 | $0.00 | 237,878 |
| 2015-03-30 | Option exercise | 12,967 | $0.00 | 308,578 |
| 2015-03-30 | Tax withholding | 6,607 | $6.46 | 301,971 |
| 2015-02-11 | Option exercise (derivative) | 24,648 | $0.00 | 250,845 |
| 2015-02-11 | Option exercise | 24,648 | $0.00 | 304,571 |
| 2015-02-11 | Tax withholding | 8,960 | $6.04 | 295,611 |
| 2015-02-06 | Grant / award (derivative) | 198,161 | $0.00 | 198,161 |
| 2015-02-06 | Grant / award (derivative) | 137,363 | $0.00 | 137,363 |
| 2015-02-06 | Grant / award (derivative) | 163,934 | $0.00 | 275,493 |
| 2015-02-06 | Grant / award (derivative) | 198,161 | $0.00 | 198,161 |
| 2015-02-06 | Grant / award (derivative) | 137,363 | $0.00 | 137,363 |
| 2015-02-05 | Option exercise (derivative) | 26,940 | $0.00 | 111,559 |
| 2015-02-05 | Option exercise | 26,940 | $0.00 | 289,995 |
| 2015-02-05 | Tax withholding | 10,072 | $6.25 | 279,923 |
| 2015-02-02 | Option exercise (derivative) | 2,481 | $0.00 | 138,499 |
| 2015-02-02 | Option exercise | 2,481 | $0.00 | 264,089 |
| 2015-02-02 | Tax withholding | 1,034 | $7.07 | 263,055 |
| 2014-12-30 | Option exercise (derivative) | 12,966 | $0.00 | 140,980 |
| 2014-12-30 | Option exercise | 12,966 | $0.00 | 268,215 |
| 2014-12-30 | Tax withholding | 6,607 | $6.82 | 261,608 |
| 2014-11-05 | Option exercise (derivative) | 26,939 | $0.00 | 153,946 |
| 2014-11-05 | Tax withholding | 13,726 | $6.70 | 255,249 |
| 2014-11-05 | Option exercise | 26,939 | $0.00 | 268,975 |
| 2014-11-03 | Option exercise (derivative) | 2,480 | $0.00 | 180,885 |
| 2014-11-03 | Tax withholding | 1,264 | $6.59 | 242,036 |
| 2014-11-03 | Option exercise | 2,480 | $0.00 | 243,300 |
| 2014-09-30 | Option exercise (derivative) | 12,967 | $0.00 | 183,365 |
| 2014-09-30 | Tax withholding | 6,607 | $7.50 | 240,820 |
| 2014-09-30 | Option exercise | 12,967 | $0.00 | 247,427 |
| 2014-08-05 | Option exercise (derivative) | 26,940 | $0.00 | 196,332 |
| 2014-08-05 | Tax withholding | 13,726 | $6.96 | 234,460 |
| 2014-08-05 | Option exercise | 26,940 | $0.00 | 248,186 |
| 2014-08-01 | Option exercise (derivative) | 2,480 | $0.00 | 223,272 |
| 2014-08-01 | Tax withholding | 1,264 | $6.86 | 221,246 |
| 2014-08-01 | Option exercise | 2,480 | $0.00 | 222,510 |
| 2014-06-30 | Option exercise (derivative) | 12,966 | $0.00 | 225,752 |
| 2014-06-30 | Tax withholding | 6,607 | $8.25 | 220,030 |
| 2014-06-30 | Option exercise | 12,966 | $0.00 | 226,637 |
| 2014-05-14 | Option exercise (derivative) | 100,000 | $0.00 | 574,600 |
| 2014-05-14 | Option exercise | 100,000 | $4.86 | 313,671 |
| 2014-05-14 | Open-market sale | 100,000 | $8.32 | 213,671 |
| 2014-05-05 | Option exercise (derivative) | 26,939 | $0.00 | 238,718 |
| 2014-05-05 | Option exercise | 26,939 | $0.00 | 227,396 |
| 2014-05-05 | Tax withholding | 13,725 | $8.13 | 213,671 |
| 2014-05-02 | Option exercise (derivative) | 75,400 | $0.00 | 674,600 |
| 2014-05-02 | Open-market sale | 75,400 | $8.20 | 200,457 |
| 2014-05-02 | Option exercise | 75,400 | $4.86 | 275,857 |
| 2014-05-01 | Option exercise (derivative) | 2,480 | $0.00 | 265,657 |
| 2014-05-01 | Tax withholding | 1,263 | $8.46 | 200,457 |
| 2014-05-01 | Option exercise | 2,480 | $0.00 | 201,720 |
| 2014-04-25 | Option exercise (derivative) | 49,296 | $0.00 | 0 |
| 2014-04-25 | Option exercise | 49,296 | $0.00 | 224,356 |
| 2014-04-25 | Tax withholding | 25,116 | $8.73 | 199,240 |
| 2014-03-31 | Option exercise (derivative) | 12,967 | $0.00 | 268,137 |
| 2014-03-31 | Tax withholding | 6,606 | $7.84 | 175,060 |
| 2014-03-31 | Option exercise | 12,967 | $0.00 | 181,666 |
| 2014-02-20 | Option exercise (derivative) | 49,296 | $0.00 | 49,296 |
| 2014-02-20 | Tax withholding | 25,116 | $7.85 | 168,699 |
| 2014-02-20 | Option exercise | 49,296 | $0.00 | 193,815 |
| 2014-02-11 | Grant / award (derivative) | 98,592 | $0.00 | 281,104 |
| 2014-02-11 | Grant / award (derivative) | 98,592 | $0.00 | 98,592 |
| 2014-02-11 | Grant / award (derivative) | 462,596 | $0.00 | 462,596 |
| 2014-02-05 | Option exercise (derivative) | 107,759 | $0.00 | 182,512 |
| 2014-02-05 | Tax withholding | 39,499 | $5.58 | 144,519 |
| 2014-02-05 | Option exercise | 107,759 | $0.00 | 184,018 |
| 2014-02-03 | Option exercise (derivative) | 2,480 | $0.00 | 290,271 |
| 2014-02-03 | Option exercise | 2,480 | $0.00 | 77,291 |
| 2014-02-03 | Tax withholding | 1,032 | $5.64 | 76,259 |
| 2013-12-30 | Option exercise (derivative) | 12,966 | $0.00 | 292,751 |
| 2013-12-30 | Option exercise | 12,966 | $0.00 | 79,524 |
| 2013-12-30 | Tax withholding | 4,713 | $5.45 | 74,811 |
| 2013-11-01 | Option exercise (derivative) | 2,480 | $0.00 | 305,717 |
| 2013-11-01 | Option exercise | 2,480 | $0.00 | 67,459 |
| 2013-11-01 | Tax withholding | 901 | $5.37 | 66,558 |
| 2013-09-30 | Option exercise (derivative) | 12,967 | $0.00 | 308,197 |
| 2013-09-30 | Option exercise | 12,967 | $0.00 | 69,692 |
| 2013-09-30 | Tax withholding | 4,713 | $4.46 | 64,979 |
| 2013-08-01 | Option exercise (derivative) | 2,481 | $0.00 | 321,164 |
| 2013-08-01 | Tax withholding | 901 | $5.28 | 56,725 |
| 2013-08-01 | Option exercise | 2,481 | $0.00 | 57,626 |
| 2013-07-01 | Option exercise (derivative) | 12,966 | $0.00 | 323,645 |
| 2013-07-01 | Tax withholding | 4,713 | $5.12 | 55,145 |
| 2013-07-01 | Option exercise | 12,966 | $0.00 | 59,858 |
| 2013-05-01 | Option exercise (derivative) | 2,480 | $0.00 | 336,611 |
| 2013-05-01 | Option exercise | 2,480 | $0.00 | 47,793 |
| 2013-05-01 | Tax withholding | 901 | $4.59 | 46,892 |
| 2013-04-01 | Option exercise (derivative) | 51,789 | $0.00 | 339,091 |
| 2013-04-01 | Tax withholding | 18,715 | $5.29 | 45,313 |
| 2013-04-01 | Option exercise | 51,789 | $0.00 | 64,028 |
| 2013-02-05 | Option exercise (derivative) | 215,517 | $0.00 | 390,880 |
| 2013-02-05 | Grant / award (derivative) | 480,000 | $0.00 | 480,000 |
| 2013-02-01 | Option exercise (derivative) | 2,480 | $0.00 | 175,363 |
| 2013-02-01 | Option exercise | 2,480 | $0.00 | 13,271 |
| 2013-02-01 | Tax withholding | 1,032 | $4.63 | 12,239 |
| 2012-11-01 | Option exercise (derivative) | 2,480 | $0.00 | 177,843 |
| 2012-11-01 | Tax withholding | 879 | $4.03 | 10,791 |
| 2012-11-01 | Option exercise | 2,480 | $0.00 | 11,670 |
| 2012-08-01 | Option exercise (derivative) | 2,480 | $0.00 | 180,323 |
| 2012-08-01 | Tax withholding | 879 | $3.55 | 9,190 |
| 2012-08-01 | Option exercise | 2,480 | $0.00 | 10,069 |
| 2012-05-01 | Option exercise (derivative) | 2,480 | $0.00 | 182,803 |
| 2012-05-01 | Tax withholding | 879 | $5.43 | 7,589 |
| 2012-05-01 | Option exercise | 2,480 | $0.00 | 8,468 |
| 2012-03-30 | Grant / award (derivative) | 155,521 | $0.00 | 185,283 |
| 2012-02-01 | Option exercise (derivative) | 9,921 | $0.00 | 29,762 |
| 2012-02-01 | Option exercise | 9,921 | $0.00 | 9,921 |
| 2012-02-01 | Tax withholding | 3,933 | $6.98 | 5,988 |
| 2011-02-01 | Grant / award (derivative) | 39,683 | $0.00 | 39,683 |
| 2010-11-08 | Grant / award (derivative) | 750,000 | $0.00 | 750,000 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.