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Thursday, December 10, 2009, 4:10PM ET - U.S. Markets Closed. Dow Up 0.67% Nasdaq Up 0.33%
Natus Medical Inc. (BABY)At 3:55PM ET: 13.67  Down 0.08 (0.58%)  
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Insider TransactionsGet Insider Transactions for:
NET SHARE PURCHASE ACTIVITY
Insider Purchases - Last 6 Months
 SharesTrans
PurchasesN/A0
Sales70,3155
Net Shares Purchased
(Sold)
(70,315)5
Total Insider Shares Held623.47K N/A
% Net Shares Purchased
(Sold)
(10.1%) N/A
Net Institutional Purchases - Prior Qtr to Latest Qtr
 Shares
Net Shares Purchased (Sold)(8,156,930)
% Change in Institutional Shares Held(57.5%)
Data provided by Thomson Financial

INSIDER TRANSACTIONS REPORTED - LAST TWO YEARS
DateInsiderSharesTypeTransactionValue*
16-Nov-09CHUNG DONG CHUNE CHRISTOPHER
Officer
4,081DirectSale at $14.81 per share.$60,439
9-Nov-09GUNST ROBERT A
Director
6,750DirectSale at $14.78 per share.$99,765
6-Nov-09MINCE WILLIAM L
Officer
22,084DirectSale at $14.65 - $14.7 per share.$324,0002
5-Aug-09MURPHY STEVEN J
Officer
2,167DirectSale at $14.20 per share.$30,771
5-Aug-09HAWKINS JAMES B
Officer
6,309DirectSale at $14.20 per share.$89,587
5-Aug-09CHUNG DONG CHUNE CHRISTOPHER
Officer
2,169DirectSale at $14.20 per share.$30,799
5-Aug-09MINCE WILLIAM L
Officer
2,166DirectSale at $14.20 per share.$30,757
5-Aug-09TRAVERSO KENNETH M
Officer
2,162DirectSale at $14.20 per share.$30,700
5-Aug-09TRAVERSO KENNETH M
Officer
2,162DirectSale at $14.20 per share.$30,700
16-Jun-09ENGIBOUS DORIS
Director
8,500DirectAcquisition (Non Open Market) at $0 per share.N/A
16-Jun-09GUNST ROBERT A
Director
8,500DirectAcquisition (Non Open Market) at $0 per share.N/A
16-Jun-09LUDLUM KEN
Director
8,500DirectAcquisition (Non Open Market) at $0 per share.N/A
16-Jun-09MOORE WILLIAM M
Director
8,500DirectAcquisition (Non Open Market) at $0 per share.N/A
16-Jun-09MICHAEL MARK D
Director
8,500DirectAcquisition (Non Open Market) at $0 per share.N/A
15-Jun-09MURPHY STEVEN J
Officer
20,000DirectAcquisition (Non Open Market) at $0 per share.N/A
15-Jun-09HAWKINS JAMES B
Officer
75,000DirectAcquisition (Non Open Market) at $0 per share.N/A
15-Jun-09CHUNG DONG CHUNE CHRISTOPHER
Officer
20,000DirectAcquisition (Non Open Market) at $0 per share.N/A
15-Jun-09MINCE WILLIAM L
Officer
20,000DirectAcquisition (Non Open Market) at $0 per share.N/A
15-Jun-09TRAVERSO KENNETH M
Officer
20,000DirectAcquisition (Non Open Market) at $0 per share.N/A
3-Jun-09TRAVERSO KENNETH M
Officer
25,000DirectSale at $11.44 per share.$286,000
29-May-09TRAVERSO KENNETH M
Officer
12,400DirectSale at $9.87 per share.$122,387
30-Apr-09NIERENBERG INVESTMENT MANAGEMENT OFFSHORE INC.
Beneficial Owner (10% or more)
500,000IndirectSale at $8.90 per share.$4,450,000
31-Mar-09NIERENBERG INVESTMENT MANAGEMENT OFFSHORE INC.
Beneficial Owner (10% or more)
45,800IndirectSale at $8.69 per share.$398,002
27-Mar-09NIERENBERG INVESTMENT MANAGEMENT OFFSHORE INC.
Beneficial Owner (10% or more)
35,454IndirectSale at $9.14 per share.$324,049
18-Mar-09NIERENBERG DAVID
Beneficial Owner (10% or more)
69,100IndirectSale at $8.11 per share.$560,401
17-Mar-09NIERENBERG DAVID
Beneficial Owner (10% or more)
62,800IndirectSale at $7.62 per share.$478,536
16-Mar-09NIERENBERG DAVID
Beneficial Owner (10% or more)
18,100IndirectSale at $7.73 per share.$139,913
14-Oct-08NIERENBERG DAVID
Beneficial Owner (10% or more)
26,547IndirectSale at $20.31 per share.$539,169
11-Sep-08HAWKINS JAMES B
Officer
34,166DirectOption Exercise at $4.07 per share.$139,055
11-Sep-08HAWKINS JAMES B
Officer
39,000DirectSale at $23.98 per share.$935,220
11-Sep-08TRAVERSO KENNETH M
Officer
9,751DirectSale at $23.98 per share.$233,828
10-Sep-08HAWKINS JAMES B
Officer
86,000DirectOption Exercise at $4.07 per share.$350,020
10-Sep-08HAWKINS JAMES B
Officer
86,000DirectSale at $23.98 per share.$2,062,280
10-Sep-08TRAVERSO KENNETH M
Officer
31,200DirectSale at $23.98 per share.$748,176
9-Sep-08HAWKINS JAMES B
Officer
25,000DirectOption Exercise at $4.07 per share.$101,750
9-Sep-08HAWKINS JAMES B
Officer
25,000DirectSale at $24.40 per share.$610,000
9-Sep-08TRAVERSO KENNETH M
Officer
18,800DirectSale at $24.26 per share.$456,088
8-Sep-08MURPHY STEVEN J
Officer
12,900DirectSale at $24.86 per share.$320,694
8-Sep-08CHUNG DONG CHUNE CHRISTOPHER
Officer
1,634DirectSale at $25 per share.$40,850
5-Sep-08MINCE WILLIAM L
Officer
7,481DirectSale at $24.09 per share.$180,217
22-Aug-08MINCE WILLIAM L
Officer
2,500DirectSale at $23.98 per share.$59,950
4-Aug-08MURPHY STEVEN J
Officer
866DirectSale at $24.15 per share.$20,913
4-Aug-08HAWKINS JAMES B
Officer
2,423DirectSale at $24.15 per share.$58,515
4-Aug-08CHUNG DONG CHUNE CHRISTOPHER
Officer
866DirectSale at $24.15 per share.$20,913
4-Aug-08TRAVERSO KENNETH M
Officer
866DirectSale at $24.15 per share.$20,913
10-Jun-08ENGIBOUS DORIS
Director
3,000DirectAcquisition (Non Open Market) at $0 per share.N/A
10-Jun-08GUNST ROBERT A
Director
3,000DirectAcquisition (Non Open Market) at $0 per share.N/A
10-Jun-08LUDLUM KEN
Director
3,000DirectAcquisition (Non Open Market) at $0 per share.N/A
10-Jun-08MOORE WILLIAM M
Director
3,000DirectAcquisition (Non Open Market) at $0 per share.N/A
10-Jun-08MICHAEL MARK D
Director
3,000DirectAcquisition (Non Open Market) at $0 per share.N/A
9-Jun-08MURPHY STEVEN J
Officer
10,000DirectAcquisition (Non Open Market) at $0 per share.N/A
9-Jun-08HAWKINS JAMES B
Officer
37,500DirectAcquisition (Non Open Market) at $0 per share.N/A
9-Jun-08CHUNG DONG CHUNE CHRISTOPHER
Officer
10,000DirectAcquisition (Non Open Market) at $0 per share.N/A
9-Jun-08MINCE WILLIAM L
Officer
10,000DirectAcquisition (Non Open Market) at $0 per share.N/A
9-Jun-08TRAVERSO KENNETH M
Officer
10,000DirectAcquisition (Non Open Market) at $0 per share.N/A
4-Apr-08NIERENBERG INVESTMENT MANAGEMENT COMPANY, INC.
Beneficial Owner (10% or more)
175,000IndirectPurchase at $18.27 per share.$3,197,250
Data provided by EDGAR Online
* = Where indicated, some values are estimates.
1 = Potential proceeds estimated by the filer.
2 = Estimated based on the average of multiple prices reported.
3 = Multiple dates reported. Most recent date shown.
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