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WESTWOOD MANAGEMENT CORP
> BABY
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 03/31/2013 | NATUS MEDICAL INC | BABY | 0 | -352,171 | 0 | -3,932,000 | |
| 12/31/2012 | NATUS MEDICAL INC | BABY | 352,171 | -8,200 | 3,932,000 | -778,000 | $11.17 |
| 09/30/2012 | NATUS MEDICAL INC | BABY | 360,371 | -38,900 | 4,710,000 | 70,000 | $13.07 |
| 06/30/2012 | NATUS MEDICAL INC | BABY | 399,271 | -22,800 | 4,640,000 | -395,000 | $11.62 |
| 03/31/2012 | NATUS MEDICAL INC | BABY | 422,071 | -18,800 | 5,035,000 | 878,000 | $11.93 |
| 12/31/2011 | NATUS MEDICAL INC | BABY | 440,871 | 22,286 | 4,157,000 | 176,000 | $9.43 |
| 09/30/2011 | NATUS MEDICAL INC | BABY | 418,585 | 270,043 | 3,981,000 | 1,731,000 | $9.51 |
| 09/30/2011 | NATUS MEDICAL INC | BABY | 418,585 | 270,043 | 3,981,000 | 1,731,000 | $9.51 |
| 06/30/2011 | NATUS MEDICAL INC | BABY | 148,542 | -1,130,807 | 2,250,000 | -19,243,000 | $15.15 |
| 03/31/2011 | NATUS MEDICAL INC | BABY | 1,279,349 | 15,115 | 21,493,000 | 3,566,000 | $16.80 |
| 12/31/2010 | NATUS MEDICAL INC | BABY | 1,264,234 | 127,537 | 17,927,000 | 3,013,000 | $14.18 |
| 09/30/2010 | NATUS MEDICAL INC | BABY | 1,136,697 | 252,946 | 14,914,000 | 518,000 | $13.12 |
| 06/30/2010 | NATUS MEDICAL INC | BABY | 883,751 | -4,667 | 14,396,000 | -742,000 | $16.29 |
| 03/31/2010 | NATUS MEDICAL INC | BABY | 888,418 | 2,970 | 15,138,000 | 2,042,000 | $17.04 |
| 12/31/2009 | NATUS MEDICAL INC | BABY | 885,448 | 33,729 | 13,096,000 | -46,000 | $14.79 |
| 09/30/2009 | NATUS MEDICAL INC | BABY | 851,719 | 21,752 | 13,142,000 | 1,854,000 | $15.43 |
| 06/30/2009 | NATUS MEDICAL INC | BABY | 829,967 | -22,668 | 11,288,000 | 4,032,000 | $13.60 |
| 03/31/2009 | NATUS MEDICAL INC | BABY | 852,635 | 852,635 | 7,256,000 | 7,256,000 | $8.51 |
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