Clerk of the House of Representatives
Legislative Resource Center
135 Cannon Building
Washington, DC 20515
http://lobbyingdisclosure.house.gov 		Secretary of the Senate
Office of Public Records
232 Hart Building
Washington, DC 20510
http://www.senate.gov/lobby

LOBBYING REGISTRATION

Lobbying Disclosure Act of 1995 (Section 4)

Check One: New Registrant New Client for Existing Registrant Amendment

1. Effective Date of Registration
4/1/2025
2. House Identification
 31587
 Senate Identification
 20744

REGISTRANT Organization/Lobbying Firm Self Employed Individual

3. Registrant Organization
Tiber Creek Group
Address
750 9th Street NW
 Address2
​Suite 501
City
Washington
 State
DC
 Zip
20001
 Country
USA

4. Principal place of business (if different than line 3)

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5. Contact name and telephone number International Number
Contact
​Ms. Grace Baum
 Telephone
​2023816896
 E-mail
​gbaum@tibercreekgroup.com
6. General description of registrant’s business or activities
​Government Relations.

CLIENT A Lobbying Firm is required to file a separate registration for each client. Organizations employing in-house lobbyists should check the box labeled “Self” and proceed to line 10. Self

7. Client name
​International Society of Optics and Photonics
Address
​1000 20th Street
City
​Bellingham
 State
​WA
 Zip
​98225
 Country
​USA
8. Principal place of business (if different than line 7)
City
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State
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Zip
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9. General description of client’s business or activities
​Advocacy to advance light-based science and technology.

LOBBYISTS

10. Name of each individual who has acted or is expected to act as a lobbyist for the client identified on line 7. If any person listed in this section has served as a “covered executive branch official” or “covered legislative branch official” within twenty years of first acting as a lobbyist for the client, state the executive and/or legislative position(s) in which the person served.

Name Covered Official Position (if applicable)
First
Last
Suffix
​Sean ​Richardson ​ ​Chief of Staff, Sen. Amy Klobuchar (2006-2007); Chief of Staff, Rep. Patrick Kennedy (2002-2007); Deputy Staff Dir., Senate Democratic Conference Committee (1999-2002).
​Emily ​Kirlin ​ ​Mbr Servs Dir, Sen. John Cornyn (2016-2018); Whip Liaison, Sen. Cornyn (2013-2016); Whip Liaison, Sen. Jon Kyl (2011-2013); Int Comms, Sen. Lamar Alexander (2011); Comms Assist, Sen. Alexander (2009-2010); Mbr Guest Rels, Sen. Alexander (2008-2009).
​Matt ​Leffingwell ​ ​Mbr Servs & Coalitions Dir., House Approps Cmte (2016-2017); CoS, Rep. Kay Granger (2012-2015); Dep CoS, Rep. Granger (2010-2012); Comms Dir, Rep. Granger (2009-2010); Press Sec, Rep. Jon Porter (2007-2009); Projects Dir, Rep. Mark Kirk (2006-2007).
​Dan ​Zawitoski ​ ​Chief of Staff, Rep. Scott Peters (2018-2023); Legislative Director, Rep. Scott Peters (2015-2018); Legislative Assistant, Rep. Scott Peters (2014-2015); Legislative Correspondent, Rep. Scott Peters (2013-2014).
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LOBBYING ISSUES

11. General lobbying issue areas (Select all applicable codes).

​SCI
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12. Specific lobbying issues (current and anticipated)

Issues related to H.R. 6213 - National Quantum Initiative Reauthorization Act; Issues related to S. 5411 - National Quantum Initiative Reauthorization Act of 2024; Issues related to H.R. 2627/S. 1233 - Keep STEM Talent Act of 2025.

AFFILIATED ORGANIZATIONS

13. Is there an entity other than the client that contributes more than $5,000 to the lobbying activities of the registrant in a quarterly period and either participates in and/or in whole or in major part supervises or controls the registrant’s lobbying activities?

No --> Go to line 14. Yes --> Complete the rest of this section for each entity matching the criteria above, then proceed to line 14.
Internet Address:
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FOREIGN ENTITIES

14. Is there any foreign entity

a) holds at least 20% equitable ownership in the client or any organization identified on line 13; or

b) directly or indirectly, in whole or in major part, plans, supervises, controls, directs, finances or subsidizes activities of the client or any organization identified on line 13; or

c) is an affiliate of the client or any organization identified on line 13 and has a direct interest in the outcome of the lobbying activity?

No --> Sign and date the registration. Yes --> Complete the rest of this section for each entity matching the criteria above, then sign the registration.
Address Ownership
Name Street Principal place of business Amount of contribution
City State/Province Country
(city and state or country) for lobbying activities
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CONVICTIONS DISCLOSURE

15. Have any of the lobbyists listed on this report been convicted in a Federal or State Court of an offense involving bribery, extortion, embezzlement, an illegal kickback, tax evasion, fraud, a conflict of interest, making a false statement, perjury, or money laundering?

Signature
Digitally Signed By: Jonathon Jones, Partner
 Date
5/15/2025 5:24:13 PM