Mary Ann Horton
Keynote Speaker: Transgender Activist, Computer Systems Architect, Internet Pioneer & Entrepreneur; Author of "Trailblazer: Lighting the Path for Transgender Equality in Corporate America
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Mary Ann Horton Biography
Dr. Mary Ann Horton is a computer scientist, Internet pioneer, transgender activist, author, and speaker whose contributions to digital communication have influenced how billions of people connect. Horton earned a Ph.D. in computer science from the University of California at Berkeley, where she created the first binary email attachment tool and led Usenet, an early social media network. Addressing the need to email binary files when UNIX email supported only plain text, Horton developed the programs "uuencode" and "uudecode" to embed and extract binary files within text email. Uuencode became the standard for sending binary files by email, and when the PC email program "cc:Mail" gained widespread use, it incorporated a file attachment feature using uuencode formatting.
Horton's technical work extended beyond email attachments. She contributed to Berkeley UNIX (BSD), including the vi editor and terminfo database, and led the expansion of Usenet. At Bell Labs, Horton improved email usability, expanded [email protected] email access, and published Internet standards for email and Usenet. She introduced Usenet's A News system to Berkeley, facilitated its growth from a 10-site network, integrated support for Berknet and ARPANET, and created gateways between ARPANET mailing lists and Usenet newsgroups. Later, Horton worked for San Diego Gas & Electric supporting the SCADA system for the transmission grid and led cybersecurity efforts following the Northeast power blackout.
In addition to her technical achievements, Horton is recognized as a pioneering transgender activist. She persuaded Lucent Technologies to become the first Fortune 500 company to add transgender-inclusive language to its nondiscrimination policy and to provide coverage for transition care and surgery. Her advocacy was soon adopted by companies including Apple and Avaya, and Out & Equal Workplace Associates honored her with the Trailblazer Outie Award. Horton supported the addition of transgender-inclusive language at Apple, Xerox, Chase, Bank One, and Sempra Energy. She also conducted research demonstrating that transgender medical coverage would have minimal cost impact for companies.
On the 25th anniversary of Lucent's nondiscrimination policy, Horton released the memoir "Trailblazer: Lighting the Path for Transgender Equality in Corporate America," recounting her experiences as a transgender woman and activist. She is also the author of technical reference books such as "Portable C Software" and the viral Internet parody "How the Grinch Stole Marriage." Horton's work has been featured in Daily Beast, Out Magazine, Google Arts and Culture, Salon, Diversity Factor, SHRM, L-Mag, Nokia, Faces of Open Source, and Out TV. As a keynote speaker, Horton addresses topics including LGBTQ issues, DEI, and diversity and inclusion, drawing on her experience in both Internet architecture and corporate equality advocacy.
Contact a speaker booking agent to check availability on Mary Ann Horton and other top speakers and celebrities.
Mary Ann Horton Speaking Topics
In the 1990s, the "industry standard" for a transgender professional was to pass, quit, move, and start over. That expectation ended in 1997, when Dr. Mary Ann Horton persuaded Lucent Technologies to become the first Fortune 500 company in history to add transgender-inclusive language to its corporate nondiscrimination policy.
In this powerful keynote, Dr. Horton shares the inside story of how that change happened—the strategy, the data, the resistance, and the moment Lucent said "yes." Tracing the ripple effect from Lucent to Apple, Avaya, and eventually 95% of the Fortune 500, Dr. Horton connects this history directly to the challenges HR professionals and ERG leaders face in 2026. She opens with a provocative question and ends with an empowering challenge: "Can one person change the world? Yes. And you can too."
Key Takeaways:
- The "Business Case" for Inclusion: Learn how to leverage data and strategic policy to move DEI initiatives from "nice to have" to a business imperative.
- Mastering Institutional Change: Gain a masterclass on how to navigate internal resistance and build consensus at the executive level.
- Empowered Leadership: Understand how to connect your daily actions to long-term institutional change, regardless of your role or title.
What does it take to build the digital infrastructure of our world, and what does it take to secure the human rights of the people living in it? For Dr. Mary Ann Horton, these two pursuits are not separate—they are different sides of the same coin. As a seminal figure in UNIX development and email engineering, and the pioneer who secured the first transgender-inclusive policy in a Fortune 500 company, Dr. Horton offers a unique perspective at the intersection of technology and humanity.
In this keynote, Dr. Horton bridges the gap between the "system-building" mindset of a software architect and the "culture-building" mindset of an advocate. She explains how she applied the same methodical, data-driven approach used to solve complex technical engineering problems to solve the complex human problem of corporate exclusion. Dr. Horton challenges tech leaders and executives to rethink their approach to "legacy systems"—whether they are digital or cultural.
Mary Ann Horton Videos
How do I book Mary Ann Horton to speak at my event?
Our experienced booking agents have successfully helped clients around the world secure speakers like Mary Ann Horton for speaking engagements, personal appearances, product endorsements, or corporate entertainment since 2002. Click the Check Schedule button above and complete the form on this page to check availability for Mary Ann Horton, or call our office at 1.855.383.8805 to discuss your upcoming event. One of our experienced agents will be happy to help you get speaking fee information and check availability for Mary Ann Horton or any other speaker of your choice.
How much does it cost to book Mary Ann Horton for a speaking engagement?
Speaking fees for Mary Ann Horton, or any other speakers and celebrities, are determined based on a number of factors and may change without notice. The estimated fees to book Mary Ann Horton are Below $10,000 for live events and Below $10,000 for virtual events. For the most current speaking fee to hire Mary Ann Horton, click the Check Schedule button above and complete the form on this page, or call our office at 1.855.383.8805 to speak directly with an experienced booking agent.
What topics does Mary Ann Horton speak about?
Mary Ann Horton is a keynote speaker and industry expert who speaks on a wide range of topics such as LGBTQ, DEI, Diversity & Inclusion, Technology, Computer Science, Author and College.
Where does Mary Ann Horton travel from?
Mary Ann Horton generally travels from Poway, CA, USA and can be booked for (private) corporate events, personal appearances, keynote speeches, or other performances.
Who is the agent for Mary Ann Horton?
AAE Speakers Bureau has successfully secured keynote speakers like Mary Ann Horton for clients worldwide since 2002. As a full-service speaker booking agency, we have access to virtually any speaker or celebrity in the world. Our agents are happy and able to submit an offer to the speaker or celebrity of your choice, letting you benefit from our reputation and long-standing relationships in the industry. Please click the Check Schedule button above and complete the form on this page including the details of your event, or call our office at 1.855.383.8805, and one of our agents will assist you to book Mary Ann Horton for your next private or corporate function.
What is a full-service speaker booking agency?
AAE Speakers Bureau is a full-service speaker booking agency, meaning we can completely manage the speaker’s or celebrity’s engagement with your organization from the time of booking your speaker through the event’s completion. We provide all of the services you need to host Mary Ann Horton or any other speaker of your choice, including offer negotiation, contractual assistance, accounting and billing, and event speaker travel and logistics services. When you book a speaker with us, we manage the process of hosting a speaker for you as an extension of your team. Our goal is to give our clients peace of mind and a best-in-class service experience when booking a speaker with us.
Why is AAE Speakers Bureau different from other booking agencies?
If you’re looking for the best speaker recommendations, paired with a top-notch customer service experience, you’re in the right place. At AAE Speakers Bureau, we exclusively represent the interests of our clients - professional organizations, companies, universities, and associations. We intentionally do not represent the speakers we feature or book. That is so we can present our clients with the broadest and best performing set of speaker options in the market today, and we can make these recommendations without any obligation to promote a specific speaker over another. This is why when our agents suggest a speaker for your event, you can be assured that they are of the highest quality with a history of proven success with our other clients.
Mary Ann Horton is a keynote speaker and industry expert who speaks on a wide range of topics including LGBTQ, DEI and Diversity & Inclusion. The estimated speaking fee range to book Mary Ann Horton for live events is Below $10,000, and for virtual events Below $10,000. Mary Ann Horton generally travels from Poway, CA, USA and can be booked for (private) corporate events, personal appearances, keynote speeches, or other performances. Similar motivational celebrity speakers are Jeffrey Marsh, Samy Nemir Olivares and Aydian Dowling. Contact All American Speakers for ratings, reviews, videos and information on scheduling Mary Ann Horton for an upcoming event.
SPEAKING TOPICS
Mary Ann Horton Speaking Topics
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Can One Person Change the World?
In the 1990s, the "industry standard" for a transgender professional was to pass, quit, move, and start over. That expectation ended in 1997, when Dr. Mary Ann Horton persuaded Lucent Technologies to become the first Fortune 500 company in history to add transgender-inclusive language to its corporate nondiscrimination policy.
In this powerful keynote, Dr. Horton shares the inside story of how that change happened—the strategy, the data, the resistance, and the moment Lucent said "yes." Tracing the ripple effect from Lucent to Apple, Avaya, and eventually 95% of the Fortune 500, Dr. Horton connects this history directly to the challenges HR professionals and ERG leaders face in 2026. She opens with a provocative question and ends with an empowering challenge: "Can one person change the world? Yes. And you can too."
Key Takeaways:
- The "Business Case" for Inclusion: Learn how to leverage data and strategic policy to move DEI initiatives from "nice to have" to a business imperative.
- Mastering Institutional Change: Gain a masterclass on how to navigate internal resistance and build consensus at the executive level.
- Empowered Leadership: Understand how to connect your daily actions to long-term institutional change, regardless of your role or title.
-
From Bytes to Rights: A Dual Odyssey in UNIX Development & Transgender Advocacy
What does it take to build the digital infrastructure of our world, and what does it take to secure the human rights of the people living in it? For Dr. Mary Ann Horton, these two pursuits are not separate—they are different sides of the same coin. As a seminal figure in UNIX development and email engineering, and the pioneer who secured the first transgender-inclusive policy in a Fortune 500 company, Dr. Horton offers a unique perspective at the intersection of technology and humanity.
In this keynote, Dr. Horton bridges the gap between the "system-building" mindset of a software architect and the "culture-building" mindset of an advocate. She explains how she applied the same methodical, data-driven approach used to solve complex technical engineering problems to solve the complex human problem of corporate exclusion. Dr. Horton challenges tech leaders and executives to rethink their approach to "legacy systems"—whether they are digital or cultural.
VIDEO
Mary Ann Horton Videos
REVIEWS
Mary Ann Horton Reviews
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The event with Mary Ann went incredibly! That was a very special talk that I know we and the other ~50 attendees really appreciated.
Hudson River Trading LLC - Aug 17 2023
FAQS
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How do I book Mary Ann Horton to speak at my event?
Our experienced booking agents have successfully helped clients around the world secure speakers like Mary Ann Horton for speaking engagements, personal appearances, product endorsements, or corporate entertainment since 2002. Click the Check Schedule button above and complete the form on this page to check availability for Mary Ann Horton, or call our office at 1.855.383.8805 to discuss your upcoming event. One of our experienced agents will be happy to help you get speaking fee information and check availability for Mary Ann Horton or any other speaker of your choice. -
How much does it cost to book Mary Ann Horton for a speaking engagement?
Speaking fees for Mary Ann Horton, or any other speakers and celebrities, are determined based on a number of factors and may change without notice. The estimated fees to book Mary Ann Horton are Below $10,000 for live events and Below $10,000 for virtual events. For the most current speaking fee to hire Mary Ann Horton, click the Check Schedule button above and complete the form on this page, or call our office at 1.855.383.8805 to speak directly with an experienced booking agent. -
What topics does Mary Ann Horton speak about?
Mary Ann Horton is a keynote speaker and industry expert who speaks on a wide range of topics such as LGBTQ, DEI, Diversity & Inclusion, Technology, Computer Science, Author and College. -
Where does Mary Ann Horton travel from?
Mary Ann Horton generally travels from Poway, CA, USA and can be booked for (private) corporate events, personal appearances, keynote speeches, or other performances. -
Who is the agent for Mary Ann Horton?
AAE Speakers Bureau has successfully secured keynote speakers like Mary Ann Horton for clients worldwide since 2002. As a full-service speaker booking agency, we have access to virtually any speaker or celebrity in the world. Our agents are happy and able to submit an offer to the speaker or celebrity of your choice, letting you benefit from our reputation and long-standing relationships in the industry. Please click the Check Schedule button above and complete the form on this page including the details of your event, or call our office at 1.855.383.8805, and one of our agents will assist you to book Mary Ann Horton for your next private or corporate function. -
What is a full-service speaker booking agency?
AAE Speakers Bureau is a full-service speaker booking agency, meaning we can completely manage the speaker’s or celebrity’s engagement with your organization from the time of booking your speaker through the event’s completion. We provide all of the services you need to host Mary Ann Horton or any other speaker of your choice, including offer negotiation, contractual assistance, accounting and billing, and event speaker travel and logistics services. When you book a speaker with us, we manage the process of hosting a speaker for you as an extension of your team. Our goal is to give our clients peace of mind and a best-in-class service experience when booking a speaker with us. -
Why is AAE Speakers Bureau different from other booking agencies?
If you’re looking for the best speaker recommendations, paired with a top-notch customer service experience, you’re in the right place. At AAE Speakers Bureau, we exclusively represent the interests of our clients - professional organizations, companies, universities, and associations. We intentionally do not represent the speakers we feature or book. That is so we can present our clients with the broadest and best performing set of speaker options in the market today, and we can make these recommendations without any obligation to promote a specific speaker over another. This is why when our agents suggest a speaker for your event, you can be assured that they are of the highest quality with a history of proven success with our other clients.
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