I always remember Jonathan's kind smile and witty glances in law school. Four years of evening law school could leave indelible impressions.

I always would remember and miss you, Jonathan.

Wow, it's been five years yet the feeling's still fresh. I still think about him almost daily, Jonathan Losk is in my ears and in my eyes. He even enters my dreams from time to time though now I can't recall a one. The tears from five years ago have morphed into wistful smiles conjuring up memories from the good old days. Precious memories. 

Jonathan was a client who made a significant impact on my career.

He was a terrific leader and a man of great integrity and wisdom. He was truly inspirational. Jonathan knew how to bring out the best in people.

If you meet one person like Jonathan in your lifetime you are incredibly lucky. I am grateful to have known him.

I will always remember Jonathan most vividly in his comings and his goings.

He would invariably come to Shabbat services or other LBT functions straight from work, so Jill would often be with our family when he arrived. He always walked into the room with a warm smile on his face and a genuine hug for everyone, most especially my baby girl. He was always ready with a goofy grin or a tickle -- he wore that joy on his sleeve, just as I saw in the pictures of him with Adam and Abby when they were little.

At the end of the every evening, Jonathan and Jill would walk out the door, arm in arm, their eyes gleaming with love and adoration... a model of tenderness. They glowed together. While Jonathan's pain was real, that love was equally real and will endure long past this tragedy.

Jonathan, you are so missed. Your memory will be an enduring blessing to us all.

I was so saddened to hear of Jonathan's passing today. My thoughts and condolences go out to his family and friends. He and I went through law school together and he was always such a great guy. I appreciated his wit and sense of humor and our discussions about legal esoterica that only legal nerds would appreciate. May he rest in peace.

John Makarewich
Classmate and friend.

Jon was a warm and generous friend who will be missed very much! I was friends with his brother back in Chicago, spent a little time with Jon when he visited his parents after they (and I) moved to NY, and got to see him and his Mom and meet his family one time in LA. I'm sorry I did not have more time with him.

We were so thankful to the Halper-Losk family for being so welcoming when we moved to Los Angeles. Jonathan was a truly genuine and kind person who will be greatly missed. Jill, Adam, and Abby- you all are always in our thoughts and prayers.

Hello Old Friend. I’ve missed you these last few years. I miss your wigwam/tepee joke, your three vampires walk into a bar joke, the not so subtle ways you inserted the word “gig” into every conversation. I think back to the times we played hooky from work and went up skiing. That night at the Starboard Attitude, listening and dancing to some awesome blues, the guitarist wailing on his ’57 Stratocaster. We ended that night cooking up linguini with clams at 4am, laughing, eating, drinking, talking about the simple pleasures in life: friendship, good music, a nice glass of wine (we were both pleasantly surprised that the Bulgarian table wine you found for $6 was actually potable!), a good meal, and so many more small good things.
I miss you more now that I know I won’t see you again. I won’t hear any of the who knows how many other corny jokes you might have picked up along the way, your renditions of Clapton, your laugh. I guess you’re now playing The Great Gig in the Sky, what an amazing sound that must be!
Goodbye Old Friend. Goodbye my dear, dear Mollusk. I love you.

I never had the privilege of knowing Jonathan. His cousin Pat is one of my best friends in this life. She shared with me how much she loves and admires him - and I offered to pray for his family. You are not alone.

I am praying for you, Jill, Adam and Abby. Your dad was such a nice man to work with.

May God Bless your soul, Jonathan. Rest in peace.

Words cannot express the love and admiration I had for my dear cousin Jonathan, nor how much I will miss him. I had the privilege of knowing him for his entire life, so I can tell you that he came into this world with a sweet and loving nature, a keen intelligence and a great generosity of spirit. He nurtured these gifts and built on them through the years, but they were with him from the start. 
 Even when we were children, I knew he was a remarkable person. And over the years, he has been a wonderful friend and example to me—providing comfort to me and my family during the sad times, celebrating with us during the happy ones, cheering and challenging us with his wit and lively conversation and sharing his passion for music and art. In all the years that I have known him, I never heard him say or do a mean or petty thing. He treated everyone with dignity and compassion, and retained a deep and sweet humility through all his considerable accomplishments and triumphs. The love he had for Jill and Adam and Abbey was transcendent. 
 God bless you, Jonathan. May the Lord shine his countenance upon you, and may He grant you eternal Peace and Joy.

Jonathan was a force for good, bringing people together to help each other.

Of all the memories I have of Jonathan, they all share a feeling of warmth and kindness from his genuine interest in people. He was very inspiring as a leader with a rare combination of being both truly professional and caring. With joy I remember how we always found a little time to talk about which of his guitars he brought on the travels to Sweden. Jonathan, I hope you have found peace.
Linda Tjernlund, SJM Sweden

Jonathan, your intelligence, humor, musicality and love so enriched our Family Shabbat Experience community. I loved your open-hearted questioning and willingness to engage, your wicked wit paired with unabashed sentimentality. I looked forward to digging into Mussar teachings with you. Knowing how much you cared, how much you adored your beautiful family, I can only try to imagine how much you hurt. Your memory is a great blessing.

Jonathan was a mentor, friend and guide who taught me many things and showed by example how one could be very good at ones trade while at the same time being kind, caring and compassionate. A rare individual who positively touched so many, be it colleagues at work or kids in high school starting to think about their future. My life is better for having known Jonathan and he will be sorely missed. Rest in peace my friend.

Jonathan was someone that 'cared" about the people he worked with, the patients that he helped, and everyone that he came into contact with. The world will miss him

In a world that admires self, Jonathan was selfless. He always made me want to be better -- kinder, more understanding, more grateful for all life's wonder and blessings -- all of the things I so admired in him and that will be so missed. The light of the world is diminished by his passing but so much brighter because he lived.

I have known Jonathan and Jill for 14 years. I trained them both in my gym. As a personal trainer, I meet all kinds of people and I get to know them well; well enough to consider some of them my friends. Jonathan and Jill are more then just clients to me. Jonathan was a good listener, an incredibly intelligent man and a caring man. During our workouts, we had great conversations, some serious discussions and good laughs as well. Jonathan never said a bad word about anyone, only a positive word about people he met. He was very well liked by other clients in my gym. He cared about what you had to say and it showed in his eyes. I have learned things from Jonathan that I will never forget. Life experience things, people things, social things, science things and the list goes on. And those "things" I will cherish because I'm a better man for knowing Jonathan. That is his legacy and footprint he left with me. Godbless Jill, Adam and Abby. I pray for Jonathan to rest in peace. David Farhit

Like many in our law school class, I was blessed to have had Jonathan's presence in our nightly evening law study. I will always remember Jonathan's warm smile with twinkly eyes, his intelligence and occasional humors. And he was a gentle, compassionate soul.

For four years, he was part of our close evening class of 1994. Like others in the class, he worked full-time and came to class at the evenings until late. Yet he always maintained that smile and positive attitude, which I submit, lifted up class spirit and touched those around him.

May Jonathan rest in peace.

My deepest condolences to and prayers for his beloved family.

Phil Lam
1990-1994 Evening Class, Loyola Law School
& Evening Student Bar Association President/Rep

Although we lost Jonathan a few days ago, we have missed him for a long time. We have missed his kind presence, his reassuring voice and the inspiration he brought to many of us at SJM. Jonathan, may you rest in eternal peace.

Jonathan was a man who could see things that others couldn't and had a clear vision of ideas that would create a better future for his patients, physician customers, clients and colleagues. Laura and I extend our heart felt condolences to Jill, Adam and Abby on their profound loss. Jonathan's life was a great gift to those of us who were fortunate enough to have known him. Rest in peace my valued friend. You taught me the meaning of the word Mensch.

Jonathan was a true friend and a great colleague. I admired him for his passion and integrity in managing issues. He had an open and frank attitude but was always aware of the human aspect of the communication and how he influenced others. We had many valuebased discussions that I will miss.
Jonathan, you will be forever missed and I hope you have found peace.

Magnus Öhman
Sweden

Jonathan was one of the warmest, caring individuals I had the pleasure of meeting. In the all-too-few times we shared together he was an inspiration in what it meant to be a good father, husband and overall person. He shall be greatly missed but we live on with the memories of having known such a special individual.

Jonathan was a beautiful soul, loving husband and doting father. We watched our kids navigate preschool together and enjoyed many special times. We still refer to them as the "glory days". Kevin & I were devastated to hear the news. Jonathan was a special man and everyone that met him knew it. A huge loss. Much love to Jill and family. Scully Family.

As a child Jonathan took the time to listen and share his wisdom. He also exchanged many a silly joke with me through the years; from before I could legally vote to present. I will miss the joy our exchanges brought into my life.

We will miss seeing you at our family gatherings, bringing your delicious brisket. we will miss your thoughtful conversation your words of wisdom, watching you parent your amazing children and the love and support you gave to all of us. We are honored to have had you in our lives. May you rest in peace, we will always have a place for you in our hearts . David, Amy, Hilary and Annie

Jonathan was a true partner and friend, kind, intellectual, and a caring man. I enjoyed his insight and valued his guidance. Rest in peace my friend.

My heart is broken. Jon was one of my closest friends for many many years. So caring, so smart, with a great sense of humor. We grew up together. He was family to me and my family. I feel very blessed to have had him in my life and the world was a better place with him in it. In my mind he was, and always is, warm and smiling. I love you, my friend.

We in Liberty SC will remember Jonathan always. His path inspired us to support each other despite the difficulties. I will miss his example.

Jonathan inspired his global team, making them feel proud and important via his broad technical knowledge and caring for the individual in the company. Jonathan was the Leader.
Hans Andersen
Former employee and consultant
Sweden

Jonathan was a great friend and a mentor to me. When I entered his office he dropped everything and made me feel top priority. He always made time to talk, was a great listener and cared deeply for his friends and family. Such a great man, and such a loss to many of us. Rest in peace Jonathan.

Jon was my student at Loyola Law School, many years ago. He was brilliant, funny, and a true mensch. I have been following his career vicariously and was delighted when he was featured in a Wall Street Journal article in early 2015. I sent him an email congratulating him, and he sent me a very kind and thoughtful response. It is very sad that he passed away at such a young age -- such a loss for all of us.

Prof. Dan Schechter
Loyola Law School
Los Angeles