| 13F-HR |
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|
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|
|
17 Feb 2026 |
31 Dec 2025 |
028-11711 |
| 13F-HR |
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|
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|
|
14 Nov 2025 |
30 Sep 2025 |
028-11711 |
| N-PX |
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|
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|
|
02 Sep 2025 |
30 Jun 2025 |
028-11711 |
| 13F-HR |
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|
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|
|
14 Aug 2025 |
30 Jun 2025 |
028-11711 |
| 13F-HR |
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|
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|
|
15 May 2025 |
31 Mar 2025 |
028-11711 |
| 13F-HR |
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|
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|
|
14 Feb 2025 |
31 Dec 2024 |
028-11711 |
| 13F-HR |
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|
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|
|
14 Nov 2024 |
30 Sep 2024 |
028-11711 |
| N-PX |
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|
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|
|
03 Sep 2024 |
30 Jun 2024 |
028-11711 |
| 13F-HR |
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|
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|
|
14 Aug 2024 |
30 Jun 2024 |
028-11711 |
| 13F-HR |
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|
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|
|
15 May 2024 |
31 Mar 2024 |
028-11711 |
| 13F-HR |
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|
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|
|
14 Feb 2024 |
31 Dec 2023 |
028-11711 |
| 13F-HR |
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|
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|
|
14 Nov 2023 |
30 Sep 2023 |
028-11711 |
| 13F-HR |
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|
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|
|
14 Aug 2023 |
30 Jun 2023 |
028-11711 |
| 13F-HR |
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|
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|
|
15 May 2023 |
31 Mar 2023 |
028-11711 |
| 13F-HR |
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|
|
14 Feb 2023 |
31 Dec 2022 |
028-11711 |
| SC 13G/A |
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|
SC 13G/A |
14 Feb 2023 |
|
|
| SC 13G/A |
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|
SC 13G/A |
14 Feb 2023 |
|
|
| SC 13G/A |
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|
SC 13G/A |
14 Feb 2023 |
|
|
| 13F-HR |
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|
|
14 Nov 2022 |
30 Sep 2022 |
028-11711 |
| 13F-HR |
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|
|
15 Aug 2022 |
30 Jun 2022 |
028-11711 |
| 13F-HR |
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|
|
16 May 2022 |
31 Mar 2022 |
028-11711 |
| SC 13G |
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|
|
14 Feb 2022 |
|
|
| SC 13G |
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|
|
14 Feb 2022 |
|
|
| SC 13G |
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|
14 Feb 2022 |
|
|
| 13F-HR |
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|
|
14 Feb 2022 |
31 Dec 2021 |
028-11711 |
| SC 13D/A |
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|
SC 13D/A |
27 Dec 2021 |
|
|
| SC 13D/A |
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SC 13D/A |
23 Nov 2021 |
|
|
| 13F-HR |
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|
15 Nov 2021 |
30 Sep 2021 |
028-11711 |
| 4 |
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|
FORM 4 |
06 Oct 2021 |
04 Oct 2021 |
001-12719 |
| SC 13D/A |
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SC 13D/A |
06 Oct 2021 |
|
|
| 4 |
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FORM 4 |
24 Sep 2021 |
22 Sep 2021 |
001-12719 |
| SC 13D/A |
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|
24 Sep 2021 |
|
|
| 4 |
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FORM 4 |
10 Sep 2021 |
08 Sep 2021 |
001-12719 |
| 13F-HR |
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|
16 Aug 2021 |
30 Jun 2021 |
028-11711 |
| 13F-HR |
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|
|
14 May 2021 |
31 Mar 2021 |
028-11711 |
| 4 |
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|
FORM 4 |
11 Mar 2021 |
09 Mar 2021 |
001-12719 |
| SC 13D/A |
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SC 13D/A |
11 Mar 2021 |
|
|
| 13F-HR |
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|
16 Feb 2021 |
31 Dec 2020 |
028-11711 |
| 4 |
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|
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|
|
10 Dec 2020 |
08 Dec 2020 |
001-36166 |
| SC 13D/A |
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|
HOUGHTON MIFFLIN HARCOURT COMPANY |
10 Dec 2020 |
|
|
| 13F-HR |
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|
|
16 Nov 2020 |
30 Sep 2020 |
028-11711 |
| SC 13D/A |
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HOUGHTON MIFFLIN HARCOURT CO |
05 Nov 2020 |
|
|
| 13F-HR |
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|
|
14 Aug 2020 |
30 Jun 2020 |
028-11711 |
| 13F-HR |
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|
|
15 May 2020 |
31 Mar 2020 |
028-11711 |
| 13F-HR |
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|
|
14 Feb 2020 |
31 Dec 2019 |
028-11711 |
| SC 13G/A |
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|
|
13 Feb 2020 |
|
|
| SC 13G/A |
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13 Feb 2020 |
|
|
| SC 13G/A |
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|
13 Feb 2020 |
|
|
| 13F-HR |
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|
14 Nov 2019 |
30 Sep 2019 |
028-11711 |
| 13F-HR |
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|
|
14 Aug 2019 |
30 Jun 2019 |
028-11711 |
| 13F-HR |
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|
|
15 May 2019 |
31 Mar 2019 |
028-11711 |
| 4 |
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|
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|
|
13 May 2019 |
09 May 2019 |
001-38088 |
| 4 |
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|
|
08 Mar 2019 |
07 Mar 2019 |
001-36166 |
| SC 13D/A |
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|
|
08 Mar 2019 |
|
|
| SC 13G |
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|
|
14 Feb 2019 |
|
|
| SC 13G |
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|
|
14 Feb 2019 |
|
|
| SC 13G/A |
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|
|
14 Feb 2019 |
|
|
| 13F-HR |
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|
|
14 Feb 2019 |
31 Dec 2018 |
028-11711 |
| 13F-HR |
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|
|
14 Nov 2018 |
30 Sep 2018 |
028-11711 |
| SC 13D/A |
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|
|
03 Oct 2018 |
|
|
| 13F-HR |
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|
14 Aug 2018 |
30 Jun 2018 |
028-11711 |
| SC 13D |
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|
|
24 May 2018 |
|
|
| 13F-HR |
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|
|
15 May 2018 |
31 Mar 2018 |
028-11711 |
| 13F-HR |
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|
|
14 Feb 2018 |
31 Dec 2017 |
028-11711 |
| SC 13G/A |
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|
|
14 Feb 2018 |
|
|
| SC 13G/A |
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|
14 Feb 2018 |
|
|
| SC 13G/A |
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|
14 Feb 2018 |
|
|
| SC 13G |
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|
|
14 Feb 2018 |
|
|
| SC 13G/A |
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|
SC 13G/A |
26 Jan 2018 |
|
|
| SC 13G |
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|
SC 13G |
24 Jan 2018 |
|
|
| 4 |
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|
20 Dec 2017 |
18 Dec 2017 |
001-34956 |
| SC 13G/A |
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|
|
20 Dec 2017 |
|
|
| 13F-HR |
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|
14 Nov 2017 |
30 Sep 2017 |
028-11711 |
| 13F-HR |
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|
|
14 Aug 2017 |
30 Jun 2017 |
028-11711 |
| 13F-HR |
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|
15 May 2017 |
31 Mar 2017 |
028-11711 |
| 3 |
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|
|
09 May 2017 |
09 May 2017 |
001-38088 |
| 3 |
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|
08 May 2017 |
27 Apr 2017 |
001-37712 |
| SC 13D |
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|
|
08 May 2017 |
|
|
| 13F-HR |
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|
14 Feb 2017 |
31 Dec 2016 |
028-11711 |
| SC 13G/A |
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|
14 Feb 2017 |
|
|
| SC 13G |
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|
14 Feb 2017 |
|
|
| SC 13G/A |
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14 Feb 2017 |
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|
| SC 13G/A |
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08 Feb 2017 |
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|
| SC 13G/A |
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|
07 Feb 2017 |
|
|
| SC 13G/A |
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|
07 Feb 2017 |
|
|
| SC 13G |
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|
03 Jan 2017 |
|
|
| 3 |
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|
03 Jan 2017 |
22 Dec 2016 |
001-12719 |
| SC 13D/A |
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ANCHORAGE CAPITAL GROUP, LLC SC 13DA 12-21-2016 (HOUGHTON MIFFLIN HARCOURT COMPA |
22 Dec 2016 |
|
|
| 13F-HR |
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|
14 Nov 2016 |
30 Sep 2016 |
028-11711 |
| SC 13G |
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|
|
11 Oct 2016 |
|
|
| 13F-HR |
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|
15 Aug 2016 |
30 Jun 2016 |
028-11711 |
| SC 13G/A |
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|
09 Jun 2016 |
|
|
| 13F-HR |
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|
16 May 2016 |
31 Mar 2016 |
028-11711 |
| SC 13D/A |
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|
AMENDMENT NO. 4 TO SCHEDULE 13D |
01 Mar 2016 |
|
|
| SC 13D/A |
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|
SC 13D/A |
26 Feb 2016 |
|
|
| SC 13G |
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|
16 Feb 2016 |
|
|
| SC 13G/A |
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|
16 Feb 2016 |
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|
| SC 13G/A |
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16 Feb 2016 |
|
|
| SC 13G/A |
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16 Feb 2016 |
|
|
| SC 13G/A |
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|
16 Feb 2016 |
|
|
| SC 13G/A |
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|
16 Feb 2016 |
|
|
| 13F-HR |
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|
16 Feb 2016 |
31 Dec 2015 |
028-11711 |
| 4 |
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|
FORM 4 |
10 Feb 2016 |
08 Feb 2016 |
001-34956 |
| 4 |
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|
FORM 4 |
05 Feb 2016 |
03 Feb 2016 |
001-34956 |
| SC 13D/A |
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AMENDMENT NO. 3 TO SCHEDULE 13D |
22 Jan 2016 |
|
|
| SC 13D/A |
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AMENDMENT NO. 2 TO SCHEDULE 13D |
14 Dec 2015 |
|
|
| SC 13D |
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|
24 Nov 2015 |
|
|
| 13F-HR |
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|
16 Nov 2015 |
30 Sep 2015 |
028-11711 |
| 3 |
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|
FORM 3 |
25 Sep 2015 |
15 Sep 2015 |
001-34956 |
| SC 13G/A |
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|
17 Sep 2015 |
|
|
| 13F-HR |
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|
14 Aug 2015 |
30 Jun 2015 |
028-11711 |
| SC 13D/A |
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SC 13D/A |
10 Aug 2015 |
|
|
| SC 13D/A |
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SC 13D/A |
05 Aug 2015 |
|
|
| 4 |
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|
FORM 4 |
30 Jun 2015 |
26 Jun 2015 |
001-36166 |
| SC 13D/A |
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SC 13D/A |
11 Jun 2015 |
|
|
| 4 |
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4 |
08 Jun 2015 |
04 Jun 2015 |
001-31567 |
| SC 13D/A |
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SC 13D/A |
08 Jun 2015 |
|
|
| 13F-HR |
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|
15 May 2015 |
31 Mar 2015 |
028-11711 |
| SC 13G/A |
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|
07 Apr 2015 |
|
|
| SC 13D/A |
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AMENDMENT NO. 1 TO SCHEDULE 13D |
02 Apr 2015 |
|
|
| SC 13D/A |
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SC 13D/A |
02 Apr 2015 |
|
|
| 4 |
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4 |
30 Mar 2015 |
26 Mar 2015 |
001-31567 |
| SC 13D/A |
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SC 13D/A |
27 Mar 2015 |
|
|
| SC 13G |
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|
13 Mar 2015 |
|
|
| 4 |
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FORM 4 |
10 Mar 2015 |
06 Mar 2015 |
001-34956 |
| 3 |
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FORM 3 |
10 Mar 2015 |
05 Mar 2015 |
001-34956 |
| SC 13G |
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|
17 Feb 2015 |
|
|
| SC 13G/A |
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|
17 Feb 2015 |
|
|
| SC 13G/A |
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17 Feb 2015 |
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|
| SC 13G/A |
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17 Feb 2015 |
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|
| SC 13G/A |
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17 Feb 2015 |
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|
| SC 13G/A |
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|
17 Feb 2015 |
|
|
| SC 13G/A |
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|
17 Feb 2015 |
|
|
| 13F-HR |
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|
17 Feb 2015 |
31 Dec 2014 |
028-11711 |
| SC 13D/A |
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|
09 Jan 2015 |
|
|
| 13F-HR |
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|
14 Nov 2014 |
30 Sep 2014 |
028-11711 |
| 13F-HR |
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|
14 Aug 2014 |
30 Jun 2014 |
028-11711 |
| 13F-HR |
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|
15 May 2014 |
31 Mar 2014 |
028-11711 |
| 4 |
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|
4 |
09 Apr 2014 |
07 Apr 2014 |
001-31567 |
| SC 13D/A |
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|
SC 13D/A |
09 Apr 2014 |
|
|
| SC 13D/A |
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SC 13D/A |
21 Mar 2014 |
|
|
| SC 13D/A |
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SC 13D/A |
24 Feb 2014 |
|
|
| SC 13G |
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|
14 Feb 2014 |
|
|
| SC 13G |
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|
14 Feb 2014 |
|
|
| SC 13G/A |
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|
14 Feb 2014 |
|
|
| SC 13G/A |
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|
14 Feb 2014 |
|
|
| 13F-HR |
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|
14 Feb 2014 |
31 Dec 2013 |
028-11711 |
| SC 13D/A |
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|
24 Jan 2014 |
|
|
| SC 13D/A |
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|
04 Dec 2013 |
|
|
| SC 13D/A |
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|
27 Nov 2013 |
|
|
| 4/A |
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|
FORM 4/A |
25 Nov 2013 |
19 Nov 2013 |
001-36166 |
| SC 13G |
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|
25 Nov 2013 |
|
|
| 4 |
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|
FORM 4 |
21 Nov 2013 |
19 Nov 2013 |
001-36166 |
| 4 |
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|
FORM 4 |
18 Nov 2013 |
14 Nov 2013 |
001-36166 |
| 13F-HR |
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|
14 Nov 2013 |
30 Sep 2013 |
028-11711 |
| 3 |
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|
FORM 3 |
13 Nov 2013 |
13 Nov 2013 |
001-36166 |
| 3 |
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|
FORM 3 |
15 Oct 2013 |
02 Oct 2013 |
001-34144 |
| SC 13D |
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SCHEDULE 13D |
15 Oct 2013 |
|
|
| 13F-HR |
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|
|
14 Aug 2013 |
30 Jun 2013 |
028-11711 |
| SC 13D/A |
Open SC 13D/A document
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View SEC filing for SC 13D/A
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17 Jun 2013 |
|
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| SC 13G/A |
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10 Jun 2013 |
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| 13F-HR |
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|
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|
NONE |
15 May 2013 |
31 Mar 2013 |
028-11711 |
| SC 13D/A |
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|
View SEC filing for SC 13D/A
|
|
22 Mar 2013 |
|
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| SC 13G/A |
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|
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14 Feb 2013 |
|
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| SC 13G/A |
Open SC 13G/A document
|
View SEC filing for SC 13G/A
|
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14 Feb 2013 |
|
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| SC 13G/A |
Open SC 13G/A document
|
View SEC filing for SC 13G/A
|
|
14 Feb 2013 |
|
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| SC 13G/A |
Open SC 13G/A document
|
View SEC filing for SC 13G/A
|
|
14 Feb 2013 |
|
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| 13F-HR |
Open 13F-HR document
|
View SEC filing for 13F-HR
|
|
14 Feb 2013 |
31 Dec 2012 |
028-11711 |
| 13F-HR |
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|
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|
|
14 Nov 2012 |
30 Sep 2012 |
028-11711 |
| 4 |
Open 4 document
|
View SEC filing for 4
|
FORM 4 |
27 Sep 2012 |
27 Sep 2012 |
001-32968 |
| SC 13D/A |
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|
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|
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27 Sep 2012 |
|
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| 13F-HR |
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|
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|
|
14 Aug 2012 |
30 Jun 2012 |
028-11711 |
| 4 |
Open 4 document
|
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|
FORM 4 |
29 Jun 2012 |
27 Jun 2012 |
001-32968 |
| SC 13D/A |
Open SC 13D/A document
|
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|
|
29 Jun 2012 |
|
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| SC 13D/A |
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|
View SEC filing for SC 13D/A
|
|
24 May 2012 |
|
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| 13F-HR |
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|
View SEC filing for 13F-HR
|
|
15 May 2012 |
31 Mar 2012 |
028-11711 |
| SC 13D |
Open SC 13D document
|
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|
|
14 May 2012 |
|
|
| SC 13G/A |
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|
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|
|
14 Feb 2012 |
|
|
| 13F-HR |
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|
View SEC filing for 13F-HR
|
|
14 Feb 2012 |
31 Dec 2011 |
028-11711 |
| SC 13G |
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|
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|
|
14 Feb 2012 |
|
|
| SC 13G |
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|
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|
|
14 Feb 2012 |
|
|
| SC 13G |
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|
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|
|
14 Feb 2012 |
|
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| SC 13G/A |
Open SC 13G/A document
|
View SEC filing for SC 13G/A
|
|
14 Feb 2012 |
|
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| SC 13G |
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|
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|
|
14 Feb 2012 |
|
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| SC 13G |
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|
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|
|
14 Feb 2012 |
|
|
| SC 13G |
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|
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|
|
14 Feb 2012 |
|
|
| SC 13G/A |
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|
View SEC filing for SC 13G/A
|
|
14 Feb 2012 |
|
|
| SC 13G/A |
Open SC 13G/A document
|
View SEC filing for SC 13G/A
|
|
14 Feb 2012 |
|
|
| 13F-HR |
Open 13F-HR document
|
View SEC filing for 13F-HR
|
|
14 Nov 2011 |
30 Sep 2011 |
028-11711 |
| 13F-HR |
Open 13F-HR document
|
View SEC filing for 13F-HR
|
|
15 Aug 2011 |
30 Jun 2011 |
028-11711 |
| 13F-HR |
Open 13F-HR document
|
View SEC filing for 13F-HR
|
|
16 May 2011 |
31 Mar 2011 |
028-11711 |
| 3 |
Open 3 document
|
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|
FORM 3 |
28 Feb 2011 |
18 Feb 2011 |
001-31567 |
| SC 13D |
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|
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|
|
28 Feb 2011 |
|
|
| 13F-HR |
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|
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|
|
14 Feb 2011 |
31 Dec 2010 |
028-11711 |
| SC 13G |
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|
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|
|
14 Feb 2011 |
|
|
| SC 13G |
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|
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|
|
14 Feb 2011 |
|
|
| SC 13G/A |
Open SC 13G/A document
|
View SEC filing for SC 13G/A
|
|
14 Feb 2011 |
|
|
| SC 13G/A |
Open SC 13G/A document
|
View SEC filing for SC 13G/A
|
|
14 Feb 2011 |
|
|
| SC 13G/A |
Open SC 13G/A document
|
View SEC filing for SC 13G/A
|
|
14 Feb 2011 |
|
|
| SC 13G/A |
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|
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|
|
14 Feb 2011 |
|
|
| 4 |
Open 4 document
|
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|
FORM 4 |
30 Dec 2010 |
28 Dec 2010 |
001-32968 |
| SC 13D/A |
Open SC 13D/A document
|
View SEC filing for SC 13D/A
|
|
30 Dec 2010 |
|
|
| 13F-HR |
Open 13F-HR document
|
View SEC filing for 13F-HR
|
|
15 Nov 2010 |
30 Sep 2010 |
028-11711 |
| 3 |
Open 3 document
|
View SEC filing for 3
|
FORM 3 |
12 Oct 2010 |
30 Sep 2010 |
001-32968 |
| SC 13D |
Open SC 13D document
|
View SEC filing for SC 13D
|
|
12 Oct 2010 |
|
|
| 13F-HR |
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|
View SEC filing for 13F-HR
|
|
16 Aug 2010 |
30 Jun 2010 |
028-11711 |
| 13F-HR |
Open 13F-HR document
|
View SEC filing for 13F-HR
|
|
17 May 2010 |
31 Mar 2010 |
028-11711 |
| 13F-HR |
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|
View SEC filing for 13F-HR
|
|
16 Feb 2010 |
31 Dec 2009 |
028-11711 |