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.

Filer Snapshot

Obrien Richard T. SEC EDGAR Filings

SEC filings, ownership reports, and insider transactions for CIK 0001179997.

Entity Type

Individual

Total Filings

155

Latest Filing

12 May 2026

Industry

n/a

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Go to latest filings table Open reporting owner context

Source: SEC Forms 3/4/5

4 filed on 12 May 2026 for CIK 0001179997.

View Source Filing

Business address: 6363 South Fiddlers Green Circle, Greenwood Village, CO, 80111
Top holdings (ownership): XEL and VMC

Quick Takeaways

Obrien Richard T. is an SEC filer tracked under CIK 0001179997.
155 filings are listed on this profile.
Common form coverage includes 4, 4/A, 3 and more.

What Changed

Latest filing: 4 filed on 12 May 2026.
Report period: 08 May 2026.

Why This Matters

You can quote filing dates and form types directly from the SEC record on this page.
Use this profile before deeper ownership or insider analysis to confirm filing history context.

Source Evidence

Source: SEC Forms 3/4/5

4 filed on 12 May 2026 for CIK 0001179997.

View Source Filing

Return Loop

Why revisit this filer page

A newly filed 4 can change the filing history, ownership context, or next research path for Obrien Richard T..

Latest source-backed update: 4 filed 12 May 2026
Why come back: Revisit after a new SEC filing appears to compare the updated record with prior filings.

Latest filing on record: 4 filed 12 May 2026.
Save this filer if you want a stable place to return after the next filing cycle.
Open the latest filing table or ownership context to verify what changed.

Filer freshness comes from SEC EDGAR submission history and related source-backed ownership or portfolio filings when available.

Jump to save and follow actions Open latest filings table

Latest update

What changed recently for Obrien Richard T.

Ownership report updated

Latest ownership report period: 08 May 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

12 May 2026

Page type

Ownership filings

Latest period

08 May 2026

Ownership context was refreshed from SEC Forms 3/4/5 filed on 12 May 2026.

Open ownership filings Browse recent public updates

Filer Overview

Obrien Richard T. has filed 155 SEC EDGAR filings since 29 Jan 2003. Common forms include 4, 4/A, 3, 5/A.

Reporting owner transactions Latest 13F filings

Latest Filings

Recent SEC filings for Obrien Richard T. with direct links to document and filing folders.

4 File 001-33841

PRIMARY DOCUMENT

Filing date: 12 May 2026
Reporting date: 08 May 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

4 filing

Filing date: 23 May 2025
Reporting date: 22 May 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-33841

PRIMARY DOCUMENT

Filing date: 13 May 2025
Reporting date: 09 May 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

4 filing

Filing date: 31 Dec 2024
Reporting date: 28 Dec 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

4 filing

Filing date: 01 Oct 2024
Reporting date: 28 Sep 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

4 filing

Filing date: 02 Jul 2024
Reporting date: 28 Jun 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

4 filing

Filing date: 23 May 2024
Reporting date: 22 May 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-33841

PRIMARY DOCUMENT

Filing date: 13 May 2024
Reporting date: 10 May 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

4 filing

Filing date: 29 Mar 2024
Reporting date: 28 Mar 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

4 filing

Filing date: 02 Jan 2024
Reporting date: 28 Dec 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

4 filing

Filing date: 02 Oct 2023
Reporting date: 28 Sep 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

4 filing

Filing date: 29 Jun 2023
Reporting date: 28 Jun 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-33841

PRIMARY DOCUMENT

Filing date: 22 Jun 2023
Reporting date: 20 Jun 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

4 filing

Filing date: 25 May 2023
Reporting date: 24 May 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-33841

PRIMARY DOCUMENT

Filing date: 16 May 2023
Reporting date: 12 May 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

4 filing

Filing date: 30 Mar 2023
Reporting date: 28 Mar 2023
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 30 Dec 2022
Reporting date: 28 Dec 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 30 Sep 2022
Reporting date: 28 Sep 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 30 Jun 2022
Reporting date: 28 Jun 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-33841

PRIMARY DOCUMENT

Filing date: 17 Jun 2022
Reporting date: 15 Jun 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 23 May 2022
Reporting date: 19 May 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-33841

PRIMARY DOCUMENT

Filing date: 17 May 2022
Reporting date: 13 May 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 30 Mar 2022
Reporting date: 28 Mar 2022
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 30 Dec 2021
Reporting date: 28 Dec 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 30 Sep 2021
Reporting date: 28 Sep 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 30 Jun 2021
Reporting date: 28 Jun 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4/A File 001-33841

PRIMARY DOCUMENT

Filing date: 17 Jun 2021
Reporting date: 16 Jun 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-33841

PRIMARY DOCUMENT

Filing date: 16 Jun 2021
Reporting date: 16 Jun 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 24 May 2021
Reporting date: 20 May 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-33841

PRIMARY DOCUMENT

Filing date: 18 May 2021
Reporting date: 14 May 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 30 Mar 2021
Reporting date: 26 Mar 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 29 Dec 2020
Reporting date: 28 Dec 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 29 Sep 2020
Reporting date: 28 Sep 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 30 Jun 2020
Reporting date: 26 Jun 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 27 May 2020
Reporting date: 22 May 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-33841

PRIMARY DOCUMENT

Filing date: 12 May 2020
Reporting date: 08 May 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 30 Mar 2020
Reporting date: 27 Mar 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 30 Dec 2019
Reporting date: 27 Dec 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 01 Oct 2019
Reporting date: 27 Sep 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 01 Jul 2019
Reporting date: 28 Jun 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 17 May 2019
Reporting date: 15 May 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-33841

PRIMARY DOCUMENT

Filing date: 14 May 2019
Reporting date: 10 May 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 29 Mar 2019
Reporting date: 28 Mar 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 28 Dec 2018
Reporting date: 28 Dec 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 01 Oct 2018
Reporting date: 28 Sep 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 29 Jun 2018
Reporting date: 28 Jun 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 18 May 2018
Reporting date: 17 May 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-33841

PRIMARY DOCUMENT

Filing date: 15 May 2018
Reporting date: 11 May 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 30 Mar 2018
Reporting date: 28 Mar 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 02 Jan 2018
Reporting date: 28 Dec 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 29 Sep 2017
Reporting date: 28 Sep 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 30 Jun 2017
Reporting date: 28 Jun 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-33841

4 filing

Filing date: 19 Jun 2017
Reporting date: 15 Jun 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 19 May 2017
Reporting date: 18 May 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 30 Mar 2017
Reporting date: 28 Mar 2017
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 30 Dec 2016
Reporting date: 28 Dec 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 30 Sep 2016
Reporting date: 28 Sep 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 30 Jun 2016
Reporting date: 28 Jun 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 19 May 2016
Reporting date: 19 May 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-33841

4 filing

Filing date: 16 May 2016
Reporting date: 16 May 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 30 Mar 2016
Reporting date: 28 Mar 2016
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 30 Dec 2015
Reporting date: 28 Dec 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 30 Sep 2015
Reporting date: 28 Sep 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 26 Jun 2015
Reporting date: 26 Jun 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 21 May 2015
Reporting date: 21 May 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-33841

4 filing

Filing date: 11 May 2015
Reporting date: 07 May 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 30 Mar 2015
Reporting date: 27 Mar 2015
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 29 Dec 2014
Reporting date: 26 Dec 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 30 Sep 2014
Reporting date: 26 Sep 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 27 Jun 2014
Reporting date: 27 Jun 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 22 May 2014
Reporting date: 22 May 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-33841

4 filing

Filing date: 12 May 2014
Reporting date: 08 May 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 01 Apr 2014
Reporting date: 28 Mar 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 27 Dec 2013
Reporting date: 27 Dec 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 27 Sep 2013
Reporting date: 27 Sep 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 01 Jul 2013
Reporting date: 28 Jun 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 24 May 2013
Reporting date: 23 May 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-33841

4 filing

Filing date: 13 May 2013
Reporting date: 09 May 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 01 Apr 2013
Reporting date: 28 Mar 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4/A File 001-03034

FORM 4/A

Filing date: 18 Mar 2013
Reporting date: 15 Mar 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 18 Mar 2013
Reporting date: 15 Mar 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-31240

PRIMARY DOCUMENT

Filing date: 05 Mar 2013
Reporting date: 01 Mar 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-31240

PRIMARY DOCUMENT

Filing date: 01 Mar 2013
Reporting date: 27 Feb 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 28 Dec 2012
Reporting date: 28 Dec 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 01 Oct 2012
Reporting date: 28 Sep 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-34664

O'BRIEN - 08/02/2012 RESIGNATION AND FORFEITURE OF UNITS

Filing date: 06 Aug 2012
Reporting date: 02 Aug 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-03034

FORM 4

Filing date: 03 Aug 2012
Reporting date: 01 Aug 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-03034

FORM 3

Filing date: 03 Aug 2012
Reporting date: 01 Aug 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-31240

PRIMARY DOCUMENT

Filing date: 03 Jul 2012
Reporting date: 30 Jun 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-33841

4 filing

Filing date: 15 May 2012
Reporting date: 11 May 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-34664

O'BRIEN - 04/01/2012 RESTRICTED UNIT GRANT

Filing date: 03 Apr 2012
Reporting date: 01 Apr 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-31240

PRIMARY DOCUMENT

Filing date: 05 Mar 2012
Reporting date: 01 Mar 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-31240

PRIMARY DOCUMENT

Filing date: 01 Mar 2012
Reporting date: 28 Feb 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-31240

PRIMARY DOCUMENT

Filing date: 04 Jan 2012
Reporting date: 31 Dec 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-31240

PRIMARY DOCUMENT

Filing date: 13 Sep 2011
Reporting date: 13 Sep 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-33841

4 filing

Filing date: 03 Jun 2011
Reporting date: 01 Jun 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-31240

PRIMARY DOCUMENT

Filing date: 27 Apr 2011
Reporting date: 25 Apr 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-34664

FORM 4 - 04/01/2011 RESTRICTED UNIT GRANT

Filing date: 05 Apr 2011
Reporting date: 01 Apr 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-31240

PRIMARY DOCUMENT

Filing date: 03 Mar 2011
Reporting date: 01 Mar 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-31240

PRIMARY DOCUMENT

Filing date: 02 Mar 2011
Reporting date: 28 Feb 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-31240

PRIMARY DOCUMENT

Filing date: 01 Mar 2011
Reporting date: 25 Feb 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-31240

PRIMARY DOCUMENT

Filing date: 25 Feb 2011
Reporting date: 23 Feb 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

3 File 001-34664

FORM 3

Filing date: 09 Nov 2010
Reporting date: 05 Nov 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-34663

FORM 4

Filing date: 09 Nov 2010
Reporting date: 05 Nov 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-34664

FORM 4

Filing date: 09 Nov 2010
Reporting date: 05 Nov 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-31240

PRIMARY DOCUMENT

Filing date: 01 Oct 2010
Reporting date: 30 Sep 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-33841

4 filing

Filing date: 03 Jun 2010
Reporting date: 01 Jun 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-31240

PRIMARY DOCUMENT

Filing date: 04 May 2010
Reporting date: 30 Apr 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-31240

PRIMARY DOCUMENT

Filing date: 03 May 2010
Reporting date: 29 Apr 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-31240

PRIMARY DOCUMENT

Filing date: 03 Mar 2010
Reporting date: 01 Mar 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-31240

PRIMARY DOCUMENT

Filing date: 26 Feb 2010
Reporting date: 25 Feb 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-31240

PRIMARY DOCUMENT

Filing date: 25 Feb 2010
Reporting date: 23 Feb 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 001-31240

PRIMARY DOCUMENT

Filing date: 11 Feb 2010
Reporting date: 09 Feb 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

4 File 000-51304

O'BRIEN FORM 4 - 01/04/2010 ISSUANCE OF NRGP RESTRICTED UNITS

Filing date: 05 Jan 2010
Reporting date: 04 Jan 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

About this filer

Obrien Richard T. files with the SEC under CIK 0001179997. 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.