Longline
Creating the conditions for growth.
Pearls are formed when challenges are met with persistence and care. We believe organizations grow the same way.
Longline partners with nonprofits, advocacy groups, and campaigns to build strong fundraising programs, strengthen operations, communicate impact, and create lasting change.
Our Founders
Samantha Riemer
Erina Colombo
Longline is a full-service firm specializing in fundraising, design, and project management. We are on a mission to support nonprofits and progressive campaigns working to create a more just and equitable world. Co-founded by Samantha Riemer and Erina Colombo—former aides to Congresswoman Ayanna Pressley with over 25 years of combined experience—Longline is deeply committed to helping clients secure the resources needed to achieve their goals.
Through customized, innovative, and sustainable systems and strategies, we help organizations create the conditions for growth.
Clients & Partners
(current & former)
Click the logos outlined in orange to see the websites we’ve designed
Get fundraising strategies, creative inspiration, nonprofit trends, and stories from our impactful clients—plus whatever random things Samantha & Erina can't stop gabbing about each quarter.