About us

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Cornerstone Communications, LTD is a full-service, strategic public relations and marketing communications agency. We have been helping clients for almost three decades ago. Since our inception, we have specialized in public relations, branding, strategic communications, crisis communications, digital marketing, and more.


As one of the best pr firms for small businesses, startups, and mid-size organizations, everything we do is customized to help achieve your goals. We teach our clients how to work with a pr agency. This includes traditional pr, digital pr, SEO public relations, and more. As one of America’s top boutique pr firms, Cornerstone is an affordable pr agency that only has senior-level staff.


Our custom pr strategies include specific pr tactics, so you always know what to expect from a pr agency like ours. Our team is keenly aware of keywords and the importance of SEO when writing for our clients. Every document we write takes that into account. Cornerstone also works with a variety of press release distribution services, including PR Newswire, BusinessWire, PRWeb, and host of others.


Our clients demand thought leadership, solid brand recognition, and greater public/corporate awareness. We offer clients a wide range of marketing communications services in multiple global industries. From consumer to healthcare, and tech to financial, we deliver tangible results.

Brooke Greenwald, President/Founder


A working as a journalist for numerous Tier 1 media outlets, Ms. Greenwald founded Cornerstone Communications. Her passion for working with clients and helping them grow is contagious. As a Journalist, Ms. Greenwald understands how to gain the highest level of media attention when sharing a client story.

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University of Maryland front entrance.

Cornerstone Communications partners with clients to create customized and creative communications solutions that are designed to meet both business and brand objectives. We take pride in our extensive relationships with today’s mainstream, trade, online, and business press leaders, top industry analysts, scalable partners, customers, and others.


Our experienced, full-service digital marketing team helps clients secure their position as market leaders through their customized digital marketing initiatives. By understanding the differences between content marketing vs pr, clients can take advantage of a wealth of public relations and communications techniques.


Cornerstone’s work is designed to create brand loyalty at its very core. It enhances existing relationships and opens the door to new ones. Our marketing strategy work focuses on your standing, while targeting the new constituencies you want to reach.


Our clients benefit from the quality results of an in-house public relations and marketing team at a more reasonable cost. We share with clients our decades of experience and tools. We drive public engagement, build brand recognition, credibility, and develop targeted media and digital initiatives. Whether you’re looking for consumer public relations, small business pr, or just an affordable pr company, Cornerstone has what it takes to make the difference for you and for your brand.


As a boutique agency that has been listed as one of the best pr agencies nationwide, Cornerstone Communications not only leverages its experience, contacts, and locations to give our clients sophisticated services for a modest price, but also introduces and builds high-level relationships for you.


Our corporate headquarters are strategically located in Maryland, close to the Dulles Technology Quarter, the District of Columbia, and Maryland’s burgeoning enterprises. Our President, Brooke Greenwald has won numerous awards and currently serves as a mentor for multiple organizations, including Northern Virginia’s prestigious Mach 37 Cyber Accelerator.