Investment Management Co Nierenberg serves as Executive at NATUS MEDICAL INC, where they oversee executive responsibilities. Since joining the company, Investment Management Co Nierenberg has executed 89 insider transactions totaling $34.6M, demonstrating a bullish approach to their equity position. Their most recent transaction on Aug 1, 2009 involved purchasing 1,500 shares valued at $28.1K.
Investment Management Co Nierenberg currently holds 110,361 shares of NATUS MEDICAL INC (BABY), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Investment Management Co Nierenberg has been a net buyer of BABY stock. They have purchased $33.7M and sold $975.7K worth of shares.
Investment Management Co Nierenberg's most recent insider trade was on Aug 1, 2009, when they purchased 1,500 shares at $18.72 per share.
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| $6.47 |
| Discretionary |
| Feb 5, 2009 | ESIO | $268.1K | Sale | 41,953 | $6.39 | Discretionary |
| Feb 4, 2009 | ESIO | $384.6K | Sale | 60,000 | $6.41 | Discretionary |
| Dec 29, 2008 | RSYS | $19.4K | Purchase | 4,300 | $4.50 | Discretionary |
| Aug 21, 2008 | AACC | $25.9K | Purchase | 2,400 | $10.80 | Discretionary |
| Aug 20, 2008 | AACC | $26.0K | Purchase | 2,400 | $10.84 | Discretionary |
| Aug 19, 2008 | AACC | $54.4K | Purchase | 5,000 | $10.88 | Discretionary |
| Aug 18, 2008 | MDTH | $78.0K | Purchase | 3,700 | $21.09 | Discretionary |
| Aug 15, 2008 | MDTH | $34.4K | Purchase | 1,600 | $21.47 | Discretionary |
| Aug 13, 2008 | AACC | $47.4K | Purchase | 4,400 | $10.78 | Discretionary |
| Aug 12, 2008 | AACC | $48.2K | Purchase | 4,400 | $10.95 | Discretionary |
| Aug 11, 2008 | MDTH | $22.6K | Purchase | 1,100 | $20.50 | Discretionary |
| Aug 11, 2008 | AACC | $54.6K | Purchase | 4,700 | $11.62 | Discretionary |
| Aug 8, 2008 | AACC | $30.5K | Purchase | 2,800 | $10.90 | Discretionary |
| Aug 8, 2008 | MDTH | $1.9K | Purchase | 100 | $18.53 | Discretionary |
| Aug 7, 2008 | AACC | $83.4K | Purchase | 8,000 | $10.42 | Discretionary |
| Aug 7, 2008 | MDTH | $485.5K | Purchase | 26,925 | $18.03 | Discretionary |
| Aug 6, 2008 | AACC | $31.6K | Purchase | 3,000 | $10.53 | Discretionary |
| Jul 31, 2008 | RSYS | $57.5K | Purchase | 5,000 | $11.50 | Discretionary |
| Jul 31, 2008 | MDTH | $18.0K | Purchase | 975 | $18.47 | Discretionary |
| Jul 30, 2008 | MDTH | $50.0K | Purchase | 2,700 | $18.51 | Discretionary |
| Jul 24, 2008 | ESIO | $79.7K | Purchase | 5,000 | $15.94 | Discretionary |
| Jul 24, 2008 | ESIO | $947.6K | Purchase | 59,451 | $15.94 | Discretionary |
| Jul 23, 2008 | MOVE | $42.5K | Purchase | 17,200 | $2.47 | Discretionary |
| Jul 22, 2008 | MOVE | $42.4K | Purchase | 17,500 | $2.42 | Discretionary |
| Jul 21, 2008 | MOVE | $28.0K | Purchase | 12,300 | $2.28 | Discretionary |
| Jun 20, 2008 | AACC | $26.5K | Purchase | 2,104 | $12.58 | Discretionary |
| Jun 20, 2008 | AACC | $46.5K | Purchase | 3,700 | $12.58 | Discretionary |
| Jun 20, 2008 | AACC | $83.0K | Purchase | 6,600 | $12.58 | Discretionary |