Registered lobbyist
David D O'brien
Government post most recently disclosed: Managing Partner
Lobby filings
1,218
Clients
52
Firms
1
Total contributed
$83,100
Contributions
101
Committees
62
Contribution reports
40
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
500 filings, newest first. The 500 most recent of 1,218; pick a year for the rest.
| Filing | Firm | Client | Amount |
|---|---|---|---|
| 3rd Quarter - Termination 3rd Quarter 2026 |
C2 STRATEGIES | EUTELSAT S.A. | $30,000 reported |
| 3rd Quarter - Report 3rd Quarter 2026 |
C2 STRATEGIES | JAIA ROBOTICS | $30,000 reported |
| 3rd Quarter - Report 3rd Quarter 2026 |
C2 STRATEGIES | SEASPAN - VANCOUVER SHIPYARDS | $30,000 reported |
| 3rd Quarter - Report 3rd Quarter 2026 |
C2 STRATEGIES | LEONARDO DRS, INC | $30,000 reported |
| 3rd Quarter - Report 3rd Quarter 2026 |
C2 STRATEGIES | AST SPACEMOBILE | $50,000 reported |
| 3rd Quarter - Report 3rd Quarter 2026 |
C2 STRATEGIES | AEROCORE TECHNOLOGIES LLC | $30,000 reported |
| 3rd Quarter - Report 3rd Quarter 2026 |
C2 STRATEGIES | CASCADE AEROSPACE INC. | $30,000 reported |
| 3rd Quarter - Report 3rd Quarter 2026 |
C2 STRATEGIES | OMEGA AIR | $30,000 reported |
| 2nd Quarter - Report 2nd Quarter 2026 |
C2 STRATEGIES | EUTELSAT S.A. | $10,000 reported |
| 2nd Quarter - Report 2nd Quarter 2026 |
C2 STRATEGIES | JAIA ROBOTICS | $30,000 reported |
Political contributions
101 contributions, newest first.
| Recipient or honoree | Payee | Date | Amount |
|---|---|---|---|
| Trent Kelly | Paid to WIN RED KELLY | Nov 17, 2025 | $500 |
| Rob Wittman | Paid to WIN RED ROB WITTMAN | Oct 28, 2025 | $500 |
| Nick Lalota | Paid to WIN RED LALOTA | Jul 11, 2025 | $500 |
| Bob Casey | Paid to BOB CASEY FOR SENATE | Jun 12, 2024 | $1,000 |
| Senator Martin Heinrich | Paid to HEINRICH FOR SENATE | Jun 29, 2023 | $1,000 |
| Senator Jon Tester | Paid to MONTANANS FOR TESTER | Nov 16, 2022 | $1,000 |
| Congresswoman Elaine Luria | Paid to ELAINE LURIA FOR CONGRESS | Sep 17, 2022 | $500 |
| Congressman Mike Gallagher | Paid to MIKE FOR WISCONSIN | Jun 8, 2022 | $2,000 |
| Congressman C.A. Dutch Ruppersberger | Paid to DUTCH FOR CONGRESS | Jun 8, 2022 | $1,000 |
| Senator Chris Van Hollen | Paid to VAN HOLLEN FOR SENATE | Jun 8, 2022 | $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 |
|---|---|---|
| HAL ROGERS FOR CONGRESS | 2 | $6,400 |
| ROGERS FOR CONGRESS | 9 | $6,250 |
| DUTCH RUPPERSBERGER FOR CONGRESS | 6 | $5,000 |
| PRICE FOR CONGRESS | 4 | $4,000 |
| DUNCAN FOR CONGRESS | 5 | $4,000 |
| HALPAC | 4 | $3,000 |
| SHAHEEN FOR SENATE | 2 | $3,000 |
| FRIENDS OF CAROLYN MCCARTHY | 3 | $3,000 |
| DEFENSE AMERICA PAC | 1 | $2,000 |
| BARTLETT FOR CONGRESS | 2 | $2,000 |
| ADAM SCHIFF FOR CONGRESS | 2 | $2,000 |
| MIKE FOR WISCONSIN | 1 | $2,000 |
| CARDIN FOR SENATE | 2 | $2,000 |
| MIKE GALLAGHER FOR CONGRESS | 2 | $2,000 |
| DUTCH FOR CONGRESS | 2 | $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, no contributions | Jul 30, 2026 | Yes | Open |
| Mid Year 2025, no contributions | Jan 22, 2026 | Yes | Open |
| Year End 2025 | Jan 22, 2026 | Yes | Open |
| Mid Year 2025, no contributions | Jul 30, 2025 | Replaced | Open |
| Year End 2024, no contributions | Jan 31, 2025 | Yes | Open |
| Mid Year 2024 | Sep 13, 2024 | Yes | Open |
| Year End 2023, no contributions | Apr 8, 2024 | Yes | Open |
| Mid Year 2023 | Jul 31, 2023 | Yes | Open |
| Year End 2022 | Jan 29, 2023 | Yes | Open |
| Mid Year 2022 | Jul 25, 2022 | Yes | Open |
| Year End 2021 | Jan 19, 2022 | Yes | Open |
| Mid Year 2021 | Jul 30, 2021 | Yes | Open |
| Year End 2020 | Jan 29, 2021 | Yes | Open |
| Mid Year 2020 | Jul 30, 2020 | Yes | Open |
| Year End 2019 | Jan 30, 2020 | Yes | Open |
| Mid Year 2019 | Jul 29, 2019 | Yes | Open |
| Year End 2018 | Jan 30, 2019 | Yes | Open |
| Mid Year 2018 | Jul 30, 2018 | Yes | Open |
| Year End 2017 | Jan 30, 2018 | Yes | Open |
| Mid Year 2017 | Jul 31, 2017 | Yes | Open |
| Year End 2016 | Jan 30, 2017 | Yes | Open |
| Mid Year 2016, no contributions | Aug 1, 2016 | Yes | Open |
| Year End 2015 | Jan 29, 2016 | Yes | Open |
| Mid Year 2015 | Jul 30, 2015 | Yes | Open |
| Year End 2014 | Jan 30, 2015 | Yes | Open |
| Mid Year 2014 | Jul 30, 2014 | Yes | Open |
| Year End 2013 | Jan 30, 2014 | Yes | Open |
| Mid Year 2013 | Jul 29, 2013 | Yes | Open |
| Year End 2012, no contributions | Jan 30, 2013 | Yes | Open |
| Mid Year 2012 | Jul 30, 2012 | Yes | Open |
| Year End 2011 | Jan 30, 2012 | Yes | Open |
| Mid Year 2011 | Aug 1, 2011 | Yes | Open |
| Year End 2010 | Jan 17, 2011 | Yes | Open |
| Mid Year 2010 | Jul 8, 2010 | Yes | Open |
| Year End 2009 | Jan 14, 2010 | Yes | Open |
| Mid Year 2009 | Jul 24, 2009 | Yes | Open |
| Year End 2008 | Jan 27, 2009 | Yes | Open |
| Mid Year 2008 | Jul 14, 2008 | Yes | Open |
| Mid Year 2008 | Jul 14, 2008 | Replaced | Open |
| Mid Year 2008 | Jul 14, 2008 | Replaced | 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.