Registered lobbyist
William O'brien
Lobby filings
86
Clients
1
Firms
1
Total contributed
$23,600
Contributions
32
Committees
25
Contribution reports
38
Lobby filings counts every filing that names this lobbyist, amendments included. Contributions come from the twice-yearly LD-203 reports, counting the current version of each report once.
Lobbying filings
86 filings, newest first.
| Filing | Firm | Client | Amount |
|---|---|---|---|
| 3rd Quarter - Report 3rd Quarter 2026 |
AMGEN, INC. | AMGEN INC | $3,150,000 reported |
| 2nd Quarter - Report 2nd Quarter 2026 |
AMGEN, INC. | AMGEN INC | $2,440,000 reported |
| 1st Quarter - Report 1st Quarter 2026 |
AMGEN, INC. | AMGEN INC | $2,580,000 reported |
| 4th Quarter - Report 4th Quarter 2025 |
AMGEN, INC. | AMGEN INC | $3,550,000 reported |
| 2nd Quarter - Amendment 2nd Quarter 2025 |
AMGEN, INC. | AMGEN INC | $2,580,000 reported |
| 3rd Quarter - Report 3rd Quarter 2025 |
AMGEN, INC. | AMGEN INC | $3,550,000 reported |
| 2nd Quarter - Reportreplaced 2nd Quarter 2025 |
AMGEN, INC. | AMGEN INC | $2,580,000 reported |
| 1st Quarter - Report 1st Quarter 2025 |
AMGEN, INC. | AMGEN INC | $3,610,000 reported |
| 4th Quarter - Report 4th Quarter 2024 |
AMGEN, INC. | AMGEN INC | $2,780,000 reported |
| 3rd Quarter - Report 3rd Quarter 2024 |
AMGEN, INC. | AMGEN INC | $2,770,000 reported |
Political contributions
32 contributions, newest first.
| Recipient or honoree | Payee | Date | Amount |
|---|---|---|---|
| Mike Rogers | Paid to MIKE ROGERS FOR SENATE | Apr 27, 2026 | $2,000 |
| Mike Rogers | Paid to MIKE ROGERS FOR SENATE | Mar 12, 2026 | $1,000 |
| Jay Obernolte | Paid to JAY OBERNOLTE FOR CONGRESS | Jul 21, 2025 | $500 |
| Mike Johnson | Paid to MIKE JOHNSON FOR LOUISIANA | Jul 17, 2025 | $2,500 |
| Brett Guthrie | Paid to BRETT GUTHRIE FOR CONGRESS | Oct 22, 2024 | $1,000 |
| Mike Rogers | Paid to MIKE ROGERS FOR SENATE | Sep 26, 2023 | $500 |
| Billy Long | Paid to BILLY LONG FOR SENATE | Mar 30, 2022 | $1,000 |
| Billy Long | Paid to BILLY LONG FOR SENATE | Feb 18, 2022 | $1,500 |
| Billy Long | Paid to BILLY LONG FOR SENATE | Sep 28, 2021 | $1,000 |
| Sara Hart Weir | Paid to SARA HART WEIR FOR CONGRESS | Sep 18, 2019 | $1,000 |
Committees given to most
The payees on this lobbyist's current reports, by total given. The payee is stated on the report; the legislator behind a committee is not.
| Payee | Contributions | Total |
|---|---|---|
| MIKE ROGERS FOR SENATE | 3 | $3,500 |
| BILLY LONG FOR SENATE | 3 | $3,500 |
| MIKE JOHNSON FOR LOUISIANA | 1 | $2,500 |
| MORRISEY FOR SENATE | 3 | $2,500 |
| BRETT GUTHRIE FOR CONGRESS | 1 | $1,000 |
| SARA HART WEIR FOR CONGRESS | 1 | $1,000 |
| STIVERS FOR CONGRESS | 2 | $1,000 |
| GARDNER FOR SENATE | 1 | $1,000 |
| HUDSON FOR CONGRESS | 1 | $500 |
| BASS VICTORY FUND | 1 | $500 |
| STRICKLAND FOR CONGRESS 2012 | 1 | $500 |
| POMPEO FOR CONGRESS | 1 | $500 |
| JAY OBERNOLTE FOR CONGRESS | 1 | $500 |
| GARDNER FOR CONGRESS | 1 | $500 |
| ROBERT HURT FOR CONGRESS | 1 | $500 |
Contribution reports (LD-203)
Every report the register holds. A report replaced by a later version is listed but not counted.
| Period | Filed | Counted | Official report |
|---|---|---|---|
| Mid Year 2026 | Jul 21, 2026 | Yes | Open |
| Year End 2025 | Jan 30, 2026 | Yes | Open |
| Year End 2025 | Jan 9, 2026 | Replaced | Open |
| Mid Year 2025, no contributions | Jul 22, 2025 | Yes | Open |
| Year End 2024 | Jan 22, 2025 | Yes | Open |
| Mid Year 2024, no contributions | Jul 26, 2024 | Yes | Open |
| Year End 2023 | Jan 17, 2024 | Yes | Open |
| Mid Year 2023, no contributions | Jul 26, 2023 | Yes | Open |
| Year End 2022, no contributions | Jan 10, 2023 | Yes | Open |
| Mid Year 2022 | Jul 27, 2022 | Yes | Open |
| Year End 2021 | Jan 26, 2022 | Yes | Open |
| Mid Year 2021, no contributions | Jul 22, 2021 | Yes | Open |
| Year End 2020, no contributions | Apr 21, 2021 | Yes | Open |
| Mid Year 2020, no contributions | Jul 23, 2020 | Yes | Open |
| Year End 2019 | Jan 24, 2020 | Yes | Open |
| Mid Year 2019, no contributions | Jul 29, 2019 | Yes | Open |
| Year End 2018 | Jan 24, 2019 | Yes | Open |
| Mid Year 2018 | Jul 24, 2018 | Yes | Open |
| Year End 2017 | Jan 30, 2018 | Yes | Open |
| Mid Year 2017, no contributions | Jul 27, 2017 | Yes | Open |
| Year End 2016, no contributions | Jan 30, 2017 | Yes | Open |
| Mid Year 2016, no contributions | Jul 28, 2016 | Yes | Open |
| Year End 2015, no contributions | Jan 29, 2016 | Yes | Open |
| Mid Year 2015, no contributions | Jul 30, 2015 | Yes | Open |
| Mid Year 2014, no contributions | May 28, 2015 | Yes | Open |
| Year End 2014 | Jan 30, 2015 | Yes | Open |
| Year End 2013 | Jan 30, 2014 | Yes | Open |
| Mid Year 2013, no contributions | Jul 26, 2013 | Yes | Open |
| Year End 2012 | Jan 28, 2013 | Yes | Open |
| Mid Year 2012 | Jul 26, 2012 | Yes | Open |
| Year End 2011 | Jan 30, 2012 | Yes | Open |
| Mid Year 2011, no contributions | Jul 22, 2011 | Yes | Open |
| Year End 2010 | Jan 24, 2011 | Yes | Open |
| Mid Year 2010 | Jul 29, 2010 | Yes | Open |
| Year End 2009, no contributions | Jan 29, 2010 | Yes | Open |
| Mid Year 2009 | Jul 29, 2009 | Yes | Open |
| Year End 2008 | Jan 30, 2009 | Yes | Open |
| Mid Year 2008, no contributions | Jul 30, 2008 | Yes | Open |
From reports filed under the Lobbying Disclosure Act: LD-2 reports name the lobbyists who worked on each issue, and LD-203 reports list their political contributions twice a year.