Build lasting
Advisory services for independent schools, nonprofits, and family offices.
Who We Serve
Relationships & Revenue
Philanthropy works when relationships come first. We partner with institutions and donors who see it the same way.
Independent Schools
Independent schools are where our work began. We help schools design advancement strategies that secure long-term support.
Nonprofits
We advise nonprofits that want to build stronger relationships with the people who care most about their work.
Donors & Family Offices
We advise philanthropists and family offices who want their giving to be rooted in real relationships with the organizations they support.
Our Services
How We Work
Throughline's Founder
Meet Mattingly
Mattingly Messina works with independent schools, nonprofits, and philanthropists to strengthen the relationships that make philanthropy possible.
His career spans fundraising, strategic communications, and complex negotiations — from leading advancement programs at independent schools to negotiating sensitive legal matters during his time at Google.