Sentinel Team
Katherine joined Portfolio in September 2025 as a Marketing Assistant. In her role, she supports the development and execution of promotional strategy across the Portfolio list, contributing to campaigns that drive visibility and engagement. She is particularly passionate about influencer marketing, social media strategy, and strategic partnerships, and is excited to help continue building Portfolio’s…
Read MoreSince joining Portfolio, Thesis, Sentinel, and Optimism, Lucile Culver has contributed to several New York Times bestselling campaigns, including Why Fascists Fear Teachers by Randi Weingarten, Mattering by Jennifer Breheny Wallace, and Liturgies of the Wild by Martin Shaw. Prior to Portfolio, she worked at HarperOne, an imprint of HarperCollins, where she contributed to numerous…
Read MoreAmal Ali joined Portfolio in 2026 as a Publicity Assistant. She gravitates toward conversation-driving nonfiction that explores power, culture, technology, and identity—books that challenge prevailing narratives and encourage readers to see the world a little differently. Amal earned a double major in English and Information Technology from Rutgers University–New Brunswick.
Read MoreAddi joined Portfolio, Sentinel, and Thesis in July of 2025 after working as a history teacher in Texas. She has a passion for the way books put people in conversation with one another and ideas. She is focused on editing and acquiring books that engage with the philosophy of history and challenge mainstream thought on…
Read MoreKelly Young joined Portfolio, Thesis, and Sentinel as an Editorial Assistant in 2025. She is drawn to practical, insightful nonfiction that challenges conventional thought and sparks new ideas and ways of living. Before joining Portfolio, Kelly started her career as a copyeditor, which cemented her passion for working with innovative books that inspire readers.
Read MoreLauren joined Portfolio in January 2023 after working in the self-publishing and music industries. She is passionate about discovering ways to connect books with their readers and has worked with multiple New York Times bestselling titles including Ethan Mollick’s Co-Intelligence and Vivian Tu’s Rich AF.
Read MoreDaniel joined the Portfolio, Sentinel, Optimism Press, and Thesis imprints as a publicity assistant in 2024. With a particular interest in nonfiction, Daniel loves working on titles that explore themes of race, class, global politics, and economics. Prior to joining the publicity team, Daniel taught English in Paris and earned a master’s degree from Montclair…
Read MoreCatherine joined Portfolio in 2024 as a publicity assistant. She is passionate about books that challenge the status quo and encourage readers to think beyond themselves, and subject matters related to international affairs, business, psychology, and technology. Originally from Maine, she completed the Columbia Publishing Course and graduated from Brown University with degrees in English…
Read MoreHeather joined Portfolio and Thesis in 2021, bringing over a decade of experience in publishing and digital marketing. She specializes in driving engagement and sales through strategic, story-driven campaigns that elevate brand narratives and connect with audiences. Heather has led several New York Times bestselling campaigns, including for The Algebra of Wealth and Wild Courage.…
Read MoreKirstin joined Penguin Random House in 2021. As senior publicity manager, Kirstin has led bestselling campaigns for the #1 New York Times bestseller The Algebra of Wealth, Power Failure, Unreasonable Hospitality, and more. Previously, she worked with an impressive range of authors, including David Rubenstein, Lulu Miller, Twyla Tharp, and Sebastian Junger. Before her career…
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