Susan Wojcicki and John Sobrato: A Remarkable Legacy Revealed

Susan Wojcicki and John Sobrato are not known to have run a business together, and I found no public record of a joint venture, a shared board seat or a personal partnership. What genuinely links them is more interesting than a rumour. Both helped build the physical and commercial Silicon Valley, she as the Google and YouTube executive who began by renting out her garage, he as the developer whose buildings house many of the Valley’s best-known companies. Both are also signatories of the Giving Pledge, Sobrato since 2012 and Wojcicki, with her husband Dennis Troper, since 2023. Her death on 9 August 2024 makes the comparison a question of legacy as much as biography.

Quick facts at a glance

	Susan Wojcicki	John A. Sobrato
Known for	Google employee no. 16; YouTube CEO 2014 to early 2023	Founder and chairman of The Sobrato Organization
Born	5 July 1968, Santa Clara, California	1939; son of Italian immigrants
Died	9 August 2024, aged 56 (non-small cell lung cancer)	Living
Core industry	Advertising, video, consumer internet	Commercial and residential real estate
Giving Pledge	2023, with Dennis Troper	2012, with wife Susan and son John Michael
Giving vehicle	Troper Wojcicki Foundation; trustee of the Anne Wojcicki Foundation	Sobrato Family Foundation, now Sobrato Philanthropies
Main sources	NPR, Wikipedia, Giving Pledge, Inside Philanthropy	Giving Pledge, Silicon Valley Business Journal, Philanthropy Roundtable

Why do people search for these two names together?

There are three plausible reasons, and it is worth separating them, because a lot of thin web content blurs them.

The shared first name. John Sobrato’s wife is Susan, known as Sue. She appears beside him on the Giving Pledge page and in the donor lists of charities such as LifeMoves and Second Harvest Food Bank. Someone reading “Susan and John Sobrato” in one tab and “Susan Wojcicki” in another can easily merge the two. They are different people.

Both sit on Bay Area philanthropy lists. Publications that rank local donors and power players, such as Haute Living’s Northern California Haute 100 for 2024, list both names in the same issue, which feeds the association.

The Giving Pledge. Because both appear on the same official pledger list, a search engine reads them as related entities. That is a genuine, documented link, and the rest of this article explores it.

Susan Wojcicki: the garage, the gamble and the platform

Wojcicki grew up on the Stanford campus, where her father, Stanley, taught physics, and her mother, Esther, was a teacher. She studied history and literature at Harvard and worked in marketing at Intel and in consulting at Bain before Google.

Her entry into Google is the part of the story most often repeated and, as it happens, the most relevant to this article. According to her Wikipedia biography, she was newly married and struggling with the mortgage on a house she had just bought when a mutual friend introduced her to Larry Page and Sergey Brin. They rented her garage in Menlo Park as an office for $1,700 a month. She then left Intel to become Google’s first marketing manager in 1999.

That makes her, in a small but real way, an early Silicon Valley landlord. It is a neat contrast with the man discussed next.

From there her career moved quickly. She led the early advertising products, then championed Google’s 2006 purchase of YouTube, which NPR described as a major part of her legacy. She became YouTube’s chief executive in February 2014 and led the platform until early 2023. During her tenure it reached more than two billion logged-in users a month, and she pushed hard on advertiser trust, family content and creator payments. She also became a prominent voice on parental leave and women in tech.

When she died, tributes came from Google’s Sundar Pichai, Apple’s Tim Cook and YouTube creators including John and Hank Green. NPR reported that John Green said she had been a very quiet but major donor to his maternal health project in Sierra Leone, an early hint of how privately she gave.

John Sobrato: the developer who built the buildings

Sobrato’s story starts in a very different place. He was the only child of Italian immigrants; his father ran John’s Rendezvous, a popular San Francisco restaurant. As a student at Santa Clara University he began selling homes, and, as he told Philanthropy Roundtable, houses could then be bought for about $20,000. A year after graduating in 1960, he and his mother organised their first industrial project, a 14,000-square-foot building for Lockheed.

From that start came The Sobrato Organization, which has no outside shareholders. According to the Silicon Valley Business Journal in March 2026, it has developed more than 17.5 million square feet of office and R&D space and about 5,000 apartments, and today it owns 6.3 million square feet and roughly 7,500 apartments, all held by the family. The Chronicle of Philanthropy noted that it developed campuses for tenants including Apple and Yahoo, and Philanthropy Roundtable adds Netflix.

Forbes put the family fortune at $6.9 billion around 2018. I would treat any single net-worth number with caution, because private real estate is valued by estimate rather than by a daily share price.

Where their stories genuinely overlap

The same place, the same decades

Both careers are inseparable from the Santa Clara Valley. Wojcicki was born in Santa Clara and died in Los Altos; Sobrato’s firm has spent nearly seven decades building in the same towns. Her employers needed offices, and developers like Sobrato supplied the type of custom headquarters the Valley’s companies grew into. I have found no evidence of a specific Sobrato lease or contract with Wojcicki herself, and I would be wary of any site that claims one without naming a source.

The Giving Pledge

This is the strongest documented link. The Giving Pledge, launched by Warren Buffett and Bill and Melinda Gates, asks wealthy individuals and families to commit the majority of their wealth to philanthropy.

Sobrato: Signed in April 2012. In their pledge letter, John and Sue Sobrato say each of them has provided that 100% of their wealth will go to charity during their lifetimes or to the Sobrato Family Foundation. Philanthropy Roundtable describes them as the first two-generation family to sign.
Wojcicki and Troper: Listed as signing in 2023, and the Giving Pledge’s own list now marks Wojcicki as deceased (d. 2024).

Two very different giving styles

	Sobrato	Wojcicki and Troper
Geographic focus	Overwhelmingly Silicon Valley	Bay Area plus national and global causes
Main themes	Early education, affordable housing, health, basic needs	Education and youth, Jewish causes, Bay Area community
Structure	Large family foundation with staff and open grant programmes	Smaller family foundation; also a trustee role at the Anne Wojcicki Foundation
Reported scale	More than $1.5 billion across Sobrato Philanthropies (Silicon Valley Business Journal, 2026)	About $2.7 million a year through the Troper Wojcicki Foundation (Inside Philanthropy)
Public profile	Awards, named buildings, annual reports	Often quiet; announced grants such as $500,000 to Hamilton Families as part of a $1.35 million package with Google.org

A caution on that last row: the two sets of numbers are not like for like. Inside Philanthropy has noted that the Wojcicki family has directed large sums into a donor-advised fund, which hides the full scale of their giving, so the real figure is likely higher than the foundation’s grants suggest.

My view: what the comparison teaches us

Having weighed the evidence, here is my honest opinion. The interesting contrast is not between a tech executive and a property developer. It is between two models of Silicon Valley wealth.

Sobrato’s is institutional and place-based. Building and owning property ties a family to one region for generations, and the Sobratos have chosen to give back to that same region. The Chronicle of Philanthropy reported that the family gave by cheque at first, then professionalised through a foundation after a daughter, Lisa Sobrato Sonsini, suggested it. The result is a large, structured programme with an unusually strong education focus.

Wojcicki’s is equity-driven and personal. Her wealth came from being early at Google and then running one of its biggest businesses. Her giving, from what is publicly visible, was more private and relationship-led, often through her husband and sister. That makes it harder to measure but not necessarily less meaningful.

Neither model is better. If I had to draw one lesson, it is that structure shapes visibility. Sobrato’s foundation publishes reports, so his impact is easy to count. Wojcicki’s tends to surface in anecdotes, such as the Green tribute, so her impact is easy to underestimate. Readers should be careful not to treat visibility as a measure of generosity.

What this article cannot confirm

Good research includes saying what you could not find. I did not find:

A documented business deal between Susan Wojcicki and John Sobrato.
A joint appearance or shared charity board listed by the Giving Pledge, NPR or Silicon Valley Business Journal.
Evidence that Wojcicki’s early garage arrangement involved the Sobrato family.

If you have seen a claim to the contrary, check whether it names a primary source, such as a filing, an official press release or a reputable newspaper. Anything else is rumour.

Frequently asked questions

Are Susan Wojcicki and John Sobrato related? No public source suggests so. Wojcicki’s relatives include her sister Anne Wojcicki, the 23andMe co-founder, and her parents, Stanley and Esther. Sobrato’s family includes his wife Sue and children John Michael, Sheri and Lisa.

Did Susan Wojcicki sign the Giving Pledge? Yes. She and her husband, Dennis Troper, are listed as signing in 2023.

When did John Sobrato sign the Giving Pledge? In April 2012, alongside his wife Susan and son John Michael.

How did Susan Wojcicki die? Her husband announced that she died on 9 August 2024 after a two-year illness with non-small cell lung cancer. She was 56.

Is the Susan next to John Sobrato the same person as Susan Wojcicki? No. Sue Sobrato is John Sobrato’s wife of more than half a century, according to the Sobrato Organization’s own site.

Sources and further reading

NPR, “Susan Wojcicki, former YouTube CEO and Silicon Valley visionary, dies at 56” (August 2024)
The Giving Pledge: pledger pages for John A. and Susan Sobrato, and for Dennis Troper and Susan Wojcicki
Silicon Valley Business Journal, lifetime achievement coverage of John A. Sobrato (March 2026)
Philanthropy Roundtable, “Interview with John Sobrato”
The Chronicle of Philanthropy, profile of John and Susan Sobrato
Inside Philanthropy, profile of Susan Wojcicki and Dennis Troper, and coverage of the 2023 Giving Pledge class
YouTube Official Blog, Hamilton Families grant announcement
Haute Living San Francisco, Northern California’s Haute 100 (2024)
Wikipedia, entries for Susan Wojcicki and John A. Sobrato (for cross-checking, not as sole sources)

Facts were checked against the sources above as of October 2026. Net-worth and giving totals change, so verify the latest figures before quoting them.