| 5.94 Data as of May 24 |  +0.05 / +0.85%Today’s Change | 4.33 Today|||52-Week Range 7.15 | +20.98% Year-to-Date |
| Other institutional | 39.03% |
| Mutual fund holders | 29.20% |
| Individual stakeholders | 24.86% |
| 3/31/2013 | PARADIGM CAPITAL MANAGEMENT, INC... Bought 216.0 Thousand shares of Ultra Clean Holdings Inc |
| 3/31/2013 | GILDER, GAGNON, HOWE & CO. LLC Bought 176.9 Thousand shares of Ultra Clean Holdings Inc |
| 3/31/2013 | BLACKROCK FUND ADVISORS Bought 126.7 Thousand shares of Ultra Clean Holdings Inc |
| Stockholder | Stake | Shares owned | Total value ($) | Shares bought / sold | Total change |
|---|---|---|---|---|---|
| AWM Investment Co., Inc. | 9.28% | 2,640,275 | 16,528,122 | 0 | 0.00% |
| Royce & Associates LLC | 7.42% | 2,111,449 | 13,217,671 | -395,026 | -15.76% |
| BlackRock Fund Advisors | 5.40% | 1,536,480 | 9,618,365 | +126,735 | +8.99% |
| Harvey Partners LLC | 4.10% | 1,165,000 | 7,292,900 | +110,000 | +10.43% |
| Gilder, Gagnon, Howe & Co. LLC | 3.30% | 940,093 | 5,884,982 | +176,949 | +23.19% |
| Wellington Management Co. LLP | 2.69% | 764,458 | 4,785,507 | -302,100 | -28.32% |
| William Blair & Co. LLC (Investme... | 2.48% | 705,228 | 4,414,727 | +355 | +0.05% |
| Dimensional Fund Advisors, Inc. | 2.38% | 677,266 | 4,239,685 | -400 | -0.06% |
| NorthPointe Capital LLC | 2.09% | 595,535 | 3,728,049 | -59,275 | -9.05% |
| Needham Investment Management LLC | 1.99% | 566,900 | 3,548,794 | +25,100 | +4.63% |
| Mutual fund | Stake | Shares owned | Total value ($) | Shares bought / sold | Total change |
|---|---|---|---|---|---|
| Royce Pennsylvania Mutual Fund | 2.08% | 590,540 | 3,696,780 | -308,100 | -34.29% |
| Royce Micro Cap Fund | 2.07% | 588,004 | 3,680,905 | -75,820 | -11.42% |
| Royce Capital Fund-Small Cap Port... | 1.86% | 529,503 | 3,314,689 | -77,701 | -12.80% |
| iShares Russell 2000 Index Fund | 1.55% | 442,168 | 2,767,972 | -5,390 | -1.20% |
| Needham Small Cap Growth Fund | 1.53% | 434,900 | 2,722,474 | +234,900 | +117.45% |
| Perritt Micro Cap Opportunities F... | 1.51% | 430,000 | 2,691,800 | 0 | 0.00% |
| Royce Capital Fund-Micro Cap Port... | 1.24% | 351,976 | 2,203,370 | 0 | 0.00% |
| Advisors Inner Circle II-GRT Valu... | 1.11% | 316,208 | 1,979,462 | +49,717 | +18.66% |
| Vanguard Total Stock Market Index... | 0.99% | 281,883 | 1,764,588 | 0 | 0.00% |
| Royce Opportunity Fund | 0.99% | 281,406 | 1,761,602 | 0 | 0.00% |
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