|
Form
|
|
(Filer)
|
Received
(
Period
)
|
| SC 13G |
 |
NORTHWEST NATURAL GAS CO (BLACKROCK INC.) |
01/29/10 |
| 4 |
|
NORTHWEST NATURAL GAS CO(DODSON MARK S) |
01/12/10 (01/08/10) |
| 4 |
|
NORTHWEST NATURAL GAS CO(ANDERSON DAVID HUGO) |
01/12/10 (01/08/10) |
| 4 |
|
NORTHWEST NATURAL GAS CO(MILLER C. ALEX) |
12/22/09 (12/22/09) |
| 4 |
|
NORTHWEST NATURAL GAS CO(DODSON MARK S) |
12/15/09 (12/14/09) |
| 4 |
|
NORTHWEST NATURAL GAS CO(KANTOR GREGG S) |
12/14/09 (12/10/09) |
| 4 |
|
NORTHWEST NATURAL GAS CO(YOSHIHARA GRANT M) |
12/03/09 (12/02/09) |
| 4 |
|
NORTHWEST NATURAL GAS CO(DODSON MARK S) |
11/25/09 (11/23/09) |
| 4 |
|
NORTHWEST NATURAL GAS CO(KIRKPATRICK MARGARET D) |
11/17/09 (11/13/09) |
| 4 |
|
NORTHWEST NATURAL GAS CO(DODSON MARK S) |
11/12/09 (11/09/09) |
| 4 |
|
NORTHWEST NATURAL GAS CO(ANDERSON DAVID HUGO) |
11/06/09 (11/04/09) |
| 4 |
|
NORTHWEST NATURAL GAS CO(CARTER JOHN D) |
11/06/09 (11/04/09) |
| 4 |
|
NORTHWEST NATURAL GAS CO(BOYLE TIMOTHY P) |
11/06/09 (11/04/09) |
| 4 |
|
NORTHWEST NATURAL GAS CO(PUENTES GEORGE J) |
11/06/09 (11/04/09) |
| 4 |
|
NORTHWEST NATURAL GAS CO(PEVERETT JANE L) |
11/06/09 (11/04/09) |
| 10-Q |
|
NORTHWEST NATURAL GAS CO |
11/05/09 (09/30/09) |
| 8-K |
|
NORTHWEST NATURAL GAS CO |
11/03/09 (09/30/09) |
| 4 |
|
NORTHWEST NATURAL GAS CO(DODSON MARK S) |
08/24/09 (08/21/09) |
| 4 |
|
NORTHWEST NATURAL GAS CO(DOOLITTLE LEA ANNE) |
08/21/09 (08/19/09) |
| 4/A |
|
NORTHWEST NATURAL GAS CO(DODSON MARK S) |
08/11/09 (07/01/09) |