Mary Katherine Carter is named as a lobbyist on federal disclosure filings for 5 clients through Lot Sixteen LLC. The most recent filing naming them posted in January 2026. Issues reported include Trade (domestic/foreign), Energy/Nuclear and Taxation/Internal Revenue Code.
Filers must list covered executive or legislative branch positions held. As filed:
| Client | Registrant | Latest | Issues |
|---|---|---|---|
| HOLLAND AND KNIGHT (ON BEHALF OF OUSTER) | LOT SIXTEEN LLC | Q3 2025 | Trade (domestic/foreign) |
| COALITION FOR ECONOMIC PARTNERSHIPS IN THE AMERICAS | LOT SIXTEEN LLC | Q2 2025 | Trade (domestic/foreign) |
| RIO TINTO SERVICES INC. | LOT SIXTEEN LLC | Q3 2025 | Natural Resources, Trade (domestic/foreign) |
| THE ALUMINUM ASSOCIATION | LOT SIXTEEN LLC | Q3 2025 | Trade (domestic/foreign) |
| SPAN.IO, INC. | LOT SIXTEEN LLC | Q2 2025 | Trade (domestic/foreign), Energy/Nuclear, Taxation/Internal Revenue Code |
| Year | Clients | Registrants |
|---|---|---|
| 2025 | 5 | 1 |
Pay is not disclosed for individual lobbyists. Filings do not confirm that records with the same name are one person, so this page may combine people who share the name Mary Katherine Carter. See the Capitol Clarity rankings and method.