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KATIA TEIRSTEIN
Founding Partner, Senior Attorney
Originally from Seattle, Katia is a New York State licensed attorney. She is a member of the American Immigration Lawyers Association (“AILA”) and she has been named a “Super Lawyer” for many years in the practice area of Immigration.
In her free time, she enjoys long-distance running (she is currently completing all six world major marathons), snowboarding and skiing, and watching the New York Yankees. She is fluent in French, having lived there as a teenager. She lives in New York with her husband and their two children.
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JASMINE LEISELSEN
Senior Paralegal
If it wasn't obvious from her photo, Jasmine is the identical twin sister of attorney Katia Teirstein. After a career in the snowboarding industry, Jasmine joined her sister at Teirstein Law in 2014.
She has a Bachelor’s degree from the University of Washington in Seattle. Jasmines lives in the Cascade Mountains and she is an avid snowboarder and golfer. She enjoys traveling and adventure, especially throughout Asia.
AMILLA SATHER
Senior Case Manager
She was born and raised in the foothills of the Cascade Mountains in Washington State. Amilla attended Bellevue College where she studied Applied Sciences.
She is an avid snowboarder and animal lover.
Content & Communications Manager
ANNIE CAHILL
The eldest sister of the twins here at Teirstein Law, Annie has an undergraduate degree in history from U.C. Berkeley and a Master’s degree in Education. She spent twenty years working in public education and also works at a wildlife rehabilitation clinic in her spare time.
Annie is also a published author, making her especially skilled at crafting Teirstein Law's written communications and content.
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Like Katia, Annie is a distance runner. Annie and Katia ran the New York City Half Marathon together in 2014. Annie lives in the Pacific Northwest with her husband and their "his and hers" collection of four kids.​
AMANDA LESLIE
Case Manager
Amanda was born in the suburbs of Seattle where she spent much of her childhood camping and exploring the Pacific Northwest.
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She is an ardent collector of tattoos and passionate consumer of poetry. She lives in Seattle with her husband, an artist, and their son.
NIKITA NORMAN
Law Clerk
An upstate New York native, Nikita graduated Summa Cum Laude with a bachelor’s degree in criminal justice from the State University of New York at Oneonta and continued her legal studies at Syracuse University College of Law in 2021.
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In her free time, Nikita loves cheering on the Buffalo Bills at home and away games and listening to true-crime podcasts.
REGAN O'BRIAN
Paralegal
Regan is a Massachusetts native, but has resided in Cleveland for the past 5 years. She has a Bachelor's degree in Criminal Justice with a Spanish minor from Saint Anselm College in New Hampshire, and she has over 6 years of family and business immigration experience before joining Teirstein Law.
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In her spare time, Regan enjoys long walks on the beach, spending time with her cat (and dog when she adopts one in the near future), and going to the farmers market.
