Research paths
John Downing
Filer Snapshot
John Downing
CIK 0001232878 . SEC filing timeline plus parsed ownership intelligence from 13F, 13D/G, and Forms 3/4/5 where available.
Entity Type
Individual
Total Filings
147
Latest Filing
08 May 2026
Industry
n/a
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Open 13F if you want portfolio holdings.
Open 13D/G or insider pages only when this CIK has those rows.
Business address
310 Littleton Road, Westford, MA, 01886
Top holdings (ownership)
NTCT
Filer intelligence
What SEC filings say about John Downing
A compact read of parsed XML filings. 13F, 13D/G, and Forms 3/4/5 are shown separately because they answer different ownership questions.
Quick read
Forms 3/4/5 show insider context for NTCT worth $6.64M.
SEC source mix
Counts show available parsed rows, not one combined ownership total.
XML parsed
13F portfolio
No rows yet
Quarterly institutional portfolio holdings.
Open
13D/G stakes
No rows yet
Beneficial ownership and large-stake disclosures.
Open
Forms 3/4/5
1 rows
Officer, director, and 10% owner holdings or transactions.
Open
Forms 3/4/5 insider context
NTCT
06 May 2026 ยท EVP, World-Wide Sales
$6.64M
Latest update
What changed recently for John Downing
Ownership report updated
Latest ownership report period: 06 May 2026. Open the source-backed page to inspect the fresh filing or facts context.
Update date
08 May 2026
Page type
Ownership filings
Latest period
06 May 2026
Ownership context was refreshed from SEC Forms 3/4/5 filed on 08 May 2026.
Filer Overview
John Downing has filed 147 SEC EDGAR filings since 16 Jun 2003.
Common forms include 4, 144, 4/A.
Latest Filings
Recent SEC filings for John Downing with direct links to document and filing folders.
4
File 000-26251
PRIMARY DOCUMENT
Filing date
08 May 2026
Reporting date
06 May 2026
Next action
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4
File 000-26251
PRIMARY DOCUMENT
Filing date
23 Feb 2026
Reporting date
20 Feb 2026
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144
144 filing
Filing date
20 Feb 2026
Reporting date
Not listed
Next action
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4
File 000-26251
PRIMARY DOCUMENT
Filing date
20 Feb 2026
Reporting date
18 Feb 2026
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144
144 filing
Filing date
18 Feb 2026
Reporting date
Not listed
Next action
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4
File 000-26251
4 filing
Filing date
07 Nov 2025
Reporting date
06 Nov 2025
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144
144 filing
Filing date
06 Nov 2025
Reporting date
Not listed
Next action
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4
File 000-26251
4 filing
Filing date
03 Nov 2025
Reporting date
03 Nov 2025
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144
144 filing
Filing date
03 Nov 2025
Reporting date
Not listed
Next action
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4
File 000-26251
4 filing
Filing date
28 Oct 2025
Reporting date
26 Oct 2025
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4
File 000-26251
4 filing
Filing date
12 Aug 2025
Reporting date
08 Aug 2025
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144
144 filing
Filing date
08 Aug 2025
Reporting date
Not listed
Next action
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4
File 000-26251
4 filing
Filing date
17 Jun 2025
Reporting date
15 Jun 2025
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4
File 000-26251
4 filing
Filing date
10 Jun 2025
Reporting date
06 Jun 2025
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4
File 000-26251
4 filing
Filing date
06 Jun 2025
Reporting date
04 Jun 2025
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4
File 000-26251
4 filing
Filing date
30 May 2025
Reporting date
29 May 2025
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144
144 filing
Filing date
29 May 2025
Reporting date
Not listed
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4/A
File 000-26251
4/A filing
Filing date
08 May 2025
Reporting date
06 May 2025
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4
File 000-26251
4 filing
Filing date
07 May 2025
Reporting date
05 May 2025
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4
File 000-26251
4
Filing date
19 Feb 2025
Reporting date
18 Feb 2025
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144
144 filing
Filing date
18 Feb 2025
Reporting date
Not listed
Next action
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4
File 000-26251
4
Filing date
13 Nov 2024
Reporting date
11 Nov 2024
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144
144 filing
Filing date
12 Nov 2024
Reporting date
Not listed
Next action
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4
File 000-26251
4
Filing date
29 Oct 2024
Reporting date
26 Oct 2024
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4
File 000-26251
4
Filing date
16 Aug 2024
Reporting date
15 Aug 2024
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144
144 filing
Filing date
15 Aug 2024
Reporting date
Not listed
Next action
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4
File 000-26251
4
Filing date
18 Jun 2024
Reporting date
15 Jun 2024
Next action
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4
File 000-26251
4
Filing date
10 Jun 2024
Reporting date
06 Jun 2024
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4
File 000-26251
4
Filing date
05 Jun 2024
Reporting date
26 Oct 2023
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4
File 000-26251
4
Filing date
20 Feb 2024
Reporting date
16 Feb 2024
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144
144 filing
Filing date
16 Feb 2024
Reporting date
Not listed
Next action
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4
File 000-26251
4
Filing date
14 Nov 2023
Reporting date
10 Nov 2023
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144
144 filing
Filing date
13 Nov 2023
Reporting date
Not listed
Next action
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4
File 000-26251
4
Filing date
09 Aug 2023
Reporting date
08 Aug 2023
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144
144 filing
Filing date
08 Aug 2023
Reporting date
Not listed
Next action
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4
File 000-26251
4
Filing date
03 Aug 2023
Reporting date
01 Aug 2023
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
20 Jun 2023
Reporting date
15 Jun 2023
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
06 Jun 2023
Reporting date
03 Jun 2023
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
19 May 2023
Reporting date
17 May 2023
Next action
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144
144 filing
Filing date
17 May 2023
Reporting date
Not listed
Next action
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4
File 000-26251
4
Filing date
16 May 2023
Reporting date
12 May 2023
Next action
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144
144 filing
Filing date
15 May 2023
Reporting date
Not listed
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
21 Feb 2023
Reporting date
16 Feb 2023
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
14 Nov 2022
Reporting date
10 Nov 2022
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
27 Oct 2022
Reporting date
25 Oct 2022
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
11 Aug 2022
Reporting date
09 Aug 2022
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
03 Aug 2022
Reporting date
01 Aug 2022
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
07 Jun 2022
Reporting date
03 Jun 2022
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
16 May 2022
Reporting date
12 May 2022
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
16 Feb 2022
Reporting date
14 Feb 2022
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
10 Nov 2021
Reporting date
09 Nov 2021
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
10 Aug 2021
Reporting date
09 Aug 2021
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
03 Aug 2021
Reporting date
01 Aug 2021
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
07 Jun 2021
Reporting date
03 Jun 2021
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
12 May 2021
Reporting date
10 May 2021
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
12 Feb 2021
Reporting date
10 Feb 2021
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
12 Nov 2020
Reporting date
10 Nov 2020
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
12 Aug 2020
Reporting date
10 Aug 2020
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
04 Aug 2020
Reporting date
01 Aug 2020
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
05 Jun 2020
Reporting date
03 Jun 2020
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
03 Jun 2020
Reporting date
01 Jun 2020
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
14 May 2020
Reporting date
12 May 2020
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
12 Feb 2020
Reporting date
10 Feb 2020
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
07 Nov 2019
Reporting date
05 Nov 2019
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
06 Sep 2019
Reporting date
04 Sep 2019
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
13 Aug 2019
Reporting date
12 Aug 2019
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
07 Aug 2019
Reporting date
01 Aug 2019
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
01 Aug 2019
Reporting date
30 Jul 2019
Next action
Verify source filing
4
File 000-26251
FORM 4 SUBMISSION
Filing date
05 Jun 2019
Reporting date
03 Jun 2019
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
14 May 2019
Reporting date
13 May 2019
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
08 Feb 2019
Reporting date
07 Feb 2019
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
05 Feb 2019
Reporting date
01 Feb 2019
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
12 Dec 2018
Reporting date
11 Dec 2018
Next action
Verify source filing
4
File 000-26251
FORM 4 SUBMISSION
Filing date
14 Nov 2018
Reporting date
13 Nov 2018
Next action
Verify source filing
4
File 000-26251
FORM 4 SUBMISSION
Filing date
07 Nov 2018
Reporting date
06 Nov 2018
Next action
Verify source filing
4
File 000-26251
FORM 4 SUBMISSION
Filing date
06 Sep 2018
Reporting date
04 Sep 2018
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
08 Aug 2018
Reporting date
06 Aug 2018
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
02 Aug 2018
Reporting date
01 Aug 2018
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
19 Jul 2018
Reporting date
18 Jul 2018
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
04 Jun 2018
Reporting date
01 Jun 2018
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
10 May 2018
Reporting date
08 May 2018
Next action
Verify source filing
4
File 000-26251
FORM 4 SUBMISSION
Filing date
05 Feb 2018
Reporting date
02 Feb 2018
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
12 Dec 2017
Reporting date
11 Dec 2017
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
14 Nov 2017
Reporting date
13 Nov 2017
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
01 Nov 2017
Reporting date
31 Oct 2017
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Verify source filing
4
File 000-26251
FORM 4 SUBMISSION
Filing date
06 Sep 2017
Reporting date
04 Sep 2017
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
29 Aug 2017
Reporting date
26 Aug 2017
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
02 Aug 2017
Reporting date
01 Aug 2017
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
27 Jul 2017
Reporting date
25 Jul 2017
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
05 Jun 2017
Reporting date
01 Jun 2017
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
11 May 2017
Reporting date
10 May 2017
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
06 Feb 2017
Reporting date
03 Feb 2017
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
13 Dec 2016
Reporting date
11 Dec 2016
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
15 Nov 2016
Reporting date
13 Nov 2016
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
02 Nov 2016
Reporting date
01 Nov 2016
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
07 Sep 2016
Reporting date
04 Sep 2016
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
29 Aug 2016
Reporting date
26 Aug 2016
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
23 Aug 2016
Reporting date
21 Aug 2016
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
02 Aug 2016
Reporting date
02 Aug 2016
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
02 Jun 2016
Reporting date
01 Jun 2016
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
04 Feb 2016
Reporting date
02 Feb 2016
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
14 Dec 2015
Reporting date
11 Dec 2015
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
16 Nov 2015
Reporting date
13 Nov 2015
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
09 Sep 2015
Reporting date
04 Sep 2015
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
26 Aug 2015
Reporting date
26 Aug 2015
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
25 Aug 2015
Reporting date
21 Aug 2015
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
09 Apr 2015
Reporting date
11 Dec 2014
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
17 Nov 2014
Reporting date
13 Nov 2014
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
08 Sep 2014
Reporting date
07 Sep 2014
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
26 Aug 2014
Reporting date
26 Aug 2014
Next action
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
22 Aug 2014
Reporting date
21 Aug 2014
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4
File 000-26251
FORM 4 SUBMISSION
Filing date
10 Jun 2014
Reporting date
08 Jun 2014
Next action
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4
File 000-26251
FORM 4
Filing date
10 Sep 2013
Reporting date
07 Sep 2013
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4
File 000-26251
FORM 4
Filing date
28 Aug 2013
Reporting date
26 Aug 2013
Next action
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4
File 000-26251
FORM 4
Filing date
23 Aug 2013
Reporting date
21 Aug 2013
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4
File 000-26251
FORM 4
Filing date
11 Jun 2013
Reporting date
08 Jun 2013
Next action
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4
File 000-26251
FORM 4
Filing date
11 Sep 2012
Reporting date
07 Sep 2012
Next action
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4
File 000-26251
FORM 4
Filing date
23 Aug 2012
Reporting date
21 Aug 2012
Next action
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4
File 000-26251
FORM 4
Filing date
12 Jun 2012
Reporting date
08 Jun 2012
Next action
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4
File 000-26251
4 filing
Filing date
08 Feb 2012
Reporting date
06 Feb 2012
Next action
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4
File 000-26251
FORM 4
Filing date
02 Feb 2012
Reporting date
31 Jan 2012
Next action
Verify source filing
4
File 000-26251
MAIN DOCUMENT DESCRIPTION
Filing date
09 Sep 2011
Reporting date
07 Sep 2011
Next action
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4
File 000-26251
FORM 4
Filing date
10 Jun 2011
Reporting date
08 Jun 2011
Next action
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4
File 000-26251
FORM 4
Filing date
05 May 2011
Reporting date
03 May 2011
Next action
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4
File 000-26251
FORM 4
Filing date
08 Feb 2011
Reporting date
04 Feb 2011
Next action
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4
File 000-26251
4 filing
Filing date
02 Feb 2011
Reporting date
01 Feb 2011
Next action
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4
File 000-26251
4 filing
Filing date
28 Oct 2010
Reporting date
26 Oct 2010
Next action
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4
File 000-26251
FORM 4
Filing date
10 Jun 2010
Reporting date
08 Jun 2010
Next action
Verify source filing
4
File 000-26251
FORM 4
Filing date
06 May 2010
Reporting date
04 May 2010
Next action
Verify source filing
4
File 000-26251
FORM 4
Filing date
17 Feb 2010
Reporting date
12 Feb 2010
Next action
Verify source filing
4
File 000-26251
FORM 4
Filing date
10 Feb 2010
Reporting date
08 Feb 2010
Next action
Verify source filing
4
File 000-26251
FORM 4
Filing date
08 Feb 2010
Reporting date
04 Feb 2010
Next action
Verify source filing
4
File 000-26251
FORM 4
Filing date
28 Jan 2010
Reporting date
26 Jan 2010
Next action
Verify source filing
About this filer
John Downing files with the SEC under CIK 0001232878. This page aggregates EDGAR filings and related ownership activity.
FAQ
What is a CIK?
A Central Index Key (CIK) is a unique identifier assigned by the SEC to each filer.
Why are some filings missing?
New filings appear as the SEC updates EDGAR, and older records can vary by availability.
How often is this page updated?
Updates follow new EDGAR submissions and periodic data refreshes.
CIK / security context first
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