Michael Mosier - ChadTough Defeat DIPG

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Michael Mosier - ChadTough Defeat DIPG Remembering Michael Mosier, Forever 6 years old. He fought bravely for 8.5 months, before passing away on May 17, 2015.

The Mosier family co-founded ChadTough Defeat DIPG® Foundation, which is dedicated to funding research and raising awareness of a brain tumor called DIPG... to find a cure for our kids! Michael Mosier was diagnosed with DIPG on September 4, 2014, a week after his 6th birthday and his 1st day of kindergarten. Michael's parents, Jenny and Mark Mosier, established Michael Mosier Defeat DIPG Foundation in June 2015. In early 2021, Michael Mosier Defeat DIPG Foundation joined forces with The ChadTough Foundation to create a unified nonprofit: ChadTough Defeat DIPG Foundation. We know we are Tougher Together and can make an even bigger impact for children fighting brain cancer.

Dear Michael,Today is your 18th birthday. How is it possible that today you should become an adult, when you are frozen ...
08/27/2026

Dear Michael,

Today is your 18th birthday. How is it possible that today you should become an adult, when you are frozen in time at just 6 years old? Each day holds the pain of missing you, but today feels impossible to bear.

You should have started your senior year of high school at Churchill this week. You would be preparing college applications. Would you have committed earlier to play sports in college? Who knows what was possible? Given how incredible you were even at 6 years old, I feel like ANYTHING was possible for you.

We feel extra heartache this school year with your little sister Lila entering freshman year. She should be riding to school with you, knowing the older kids who are your friends, and having you there to guide and protect her. I know she will do great as she navigates Churchill, but it crushes me that you are not here by her side. You were always so devoted to Lila, and there is no denying the huge loss of your presence in the special role that only you hold: big brother.

Michael, we have endless gratitude for the day you came into our lives and made us parents! At age six, you were already beyond our wildest dreams. Your intellect, humor, kindness, athleticism, and determination were remarkable. I know we are biased, but even others so often commented that you really were a unique and special little boy.

However, even as we celebrate the talented little guy that you were, we are heartbroken to miss out on all you would be at 18 years old. We will never know how you would have changed in the more than 11 years since we have been together. The loss of this time with you – of knowing you now – is haunting and irreparable.

My heart has been building up the armor to get through this day (and this week) for a while. I know there is no real defense against the agony of missing you get older, but somehow we have to keep surviving. Every moment would be so much better if you were here. We will grieve for you for the rest of our lives. We will also be forever thankful for our firstborn, our baby boy who opened our eyes to the depth of love that is possible. You are loved and remembered, today and always.

đź’› Love,
Mommy, Daddy & Lila

08/04/2026

On August 27, Michael would have celebrated his 18th birthday. While Michael’s life was far too short, his legacy continues to change the future for children and families facing DIPG through:

More breakthroughs.
More families supported.
More reasons for hope.

In honor of Michael's 18th birthday, we're inviting you to make a monthly or one-time gift of $18, $180, or $1,800 (or any amount meaningful to you), or simply share a birthday tribute in Michael's honor. Every way you participate helps continue the legacy Michael inspires.

Learn more, make a gift, or write a tribute here: https://chadtough.org/18-for-18/

We’re thrilled to share that thanks to the generosity of our participants, sponsors, fundraisers, and donors, the 11th A...
06/02/2026

We’re thrilled to share that thanks to the generosity of our participants, sponsors, fundraisers, and donors, the 11th Annual ChadTough Defeat DIPG Superhero 6K, presented by Headfirst, raised $205,679, and counting!

You still have a few more days to be a superhero! Donations will be accepted until this Saturday, June 6. Make a gift at Superhero6K.com!

We want to see your pictures! Please share any photos of you in your race gear using the hashtags , , and . We would love for you to email pictures to [email protected].

Thank you to everyone who took part in this meaningful event. Together, we will !

Headfirst Summer Camps

Brain Tumor Awareness Month may be coming to a close, but there’s still time to make an impact. 💛🧡 You can still donate ...
05/27/2026

Brain Tumor Awareness Month may be coming to a close, but there’s still time to make an impact. 💛🧡

You can still donate to the ChadTough Defeat DIPG Superhero 6K, presented by Headfirst, to help fund critical research for children battling DIPG and DMG while honoring all of our brain cancer heroes.

If you participated this year, we’d also love to see your photos! Please send your pictures to [email protected] so we can celebrate our incredible community.

Make a gift at Superhero6K.com!

| Headfirst Summer Camps

As Brain Tumor Awareness Month comes to an end, we want to extend one final thank you to the amazing sponsors of the Cha...
05/25/2026

As Brain Tumor Awareness Month comes to an end, we want to extend one final thank you to the amazing sponsors of the ChadTough Defeat DIPG Superhero 6K. Their generosity and dedication to our mission make this virtual event possible each year.

We are incredibly grateful for all our sponsors who stand with us in the fight to .

To learn more about our incredible sponsors or to support a Superhero 6K fundraiser, visit Superhero6K.com. 🧡💛



Headfirst Summer Camps | The Tower Companies | Jazz Pharmaceuticals | Akin Gump Strauss Hauer & Feld LLP | James G. Davis Construction (DAVIS) | Manders Companies | Shaker Recruitment Marketing | United Bank | Borrus Family Dentistry | Fishel Downey Albrecht & Riepenhoff LLC

Losing Michael is not one event that only happened 11 years ago on May 17, 2015. It’s also not just a moment that we re-...
05/17/2026

Losing Michael is not one event that only happened 11 years ago on May 17, 2015. It’s also not just a moment that we re-experience each year on May 17. Losing a child is a loss that we feel again and again, every single day.

It’s the loss of those small family moments that only your immediate family really understands. It’s the absence of another set of footsteps storming around our home. It’s the baseball equipment that sits untouched. It’s the empty place next to Lila where a big brother, best friend, and protector should be. It’s the missing of an infinite number of milestones and memories.

Our little boy was one-of-a-kind, and nothing can fill the Michael-sized hole in our hearts. We have boundless sorrow for what he endured and the life that he does not get to live. To gloss over the death of our son or make it more palatable to others by saying that “time heals” would ignore the fierce, unending love we feel for him. It would also diminish the suffering that he endured at the hands of the cruel disease – DIPG – that stole so much from him.

So, I tell you the truth: our hearts are forever broken. We will grieve just as deeply for Michael every day until our last breaths.

Thank you to everyone who takes time to remember Michael today, and all throughout the year. By talking about him, you keep his memory alive and help us know we are not alone. Our little boy loved to be the center of attention, so I can promise you that anytime his name is spoken, or you take time to think of him when you see yellow, Michael is giving you his signature big wide smile.

As we continue the fight to cure DIPG, it is our hope that Michael, and all of the brave children who have fought this disease, inspire you to keep standing by our side. While we can’t bring him back, we can dream that one day there will be many children who have overcome DIPG. And we can tell them the story of a little boy who was silly and smart and determined to always complete his “to do list” . . . who would absolutely love to finally check off “Defeat DIPG.”

We miss you and love you more than anything, forever and always, our precious Michael.

— Jenny Mosier, ChadTough Defeat DIPG co-founder & Michael's mom

You still have the chance to make a difference during Brain Tumor Awareness Month by signing up for the ChadTough Defeat...
05/03/2026

You still have the chance to make a difference during Brain Tumor Awareness Month by signing up for the ChadTough Defeat DIPG Superhero 6K, presented by Headfirst! Register by May 17 to make your mark during this meaningful month.

We can't wait to see everyone's photos in the 2026 Superhero 6K shirt! Make sure to tag us in your photos or email them to [email protected]!

Learn more or sign up at Superhero6K.com!

| Headfirst Summer Camps

We’re incredibly grateful to our Silver Sponsors for supporting the 11th Annual ChadTough Defeat DIPG Superhero 6K.Take ...
04/30/2026

We’re incredibly grateful to our Silver Sponsors for supporting the 11th Annual ChadTough Defeat DIPG Superhero 6K.

Take a moment to learn more about these outstanding partners who continue to stand with us in the fight against DIPG. You can find links to their websites on Superhero6K.com.

Borrus Family Dentistry | Fishel Downey Albrecht & Riepenhoff LLC | The Harbor School | Kendall Capital | Tuckers Air Conditioning, Heating & Plumbing | Wells Fargo Advisors

Thank you, United Bank, for joining the fight against DIPG and supporting this year’s Superhero 6K as a Gold Sponsor!Uni...
04/29/2026

Thank you, United Bank, for joining the fight against DIPG and supporting this year’s Superhero 6K as a Gold Sponsor!

United Bank is known for offering the services of a large bank while maintaining a deep commitment to the communities it serves. With 187 years of history, United Bank has remained dedicated to providing customers with safe and secure financial services.

Please join us in thanking United Bank for their support of this year’s Superhero 6K!

Learn more: www.bankwithunited.com/

| United Bank

A special thank you to Shaker Recruitment Marketing for returning as a Gold Sponsor for the 11th Annual Superhero 6K!Sha...
04/28/2026

A special thank you to Shaker Recruitment Marketing for returning as a Gold Sponsor for the 11th Annual Superhero 6K!

Shaker Recruitment Marketing delivers personalized recruitment marketing solutions built by experts in talent acquisition, employer branding, and marketing. With more than 75 years of combined experience, their team supports clients across the full spectrum, from talent attraction to analytics. Their specialized services power partnerships with leading brands.

Thank you, Shaker Recruitment Marketing, for your continued support in the fight against DIPG.

Learn more about Shaker Recruitment Marketing: shaker.com/

| Shaker Recruitment Marketing

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11325 Seven Locks Road, Suite 260
Potomac, MD
20854

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