• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
MPWcorporate boards of directors

Exclusive: California’s board diversity law led to 670 board seats filled by women, report finds

Michal Lev-Ram
By
Michal Lev-Ram
Michal Lev-Ram
Special Correspondent
Down Arrow Button Icon
Michal Lev-Ram
By
Michal Lev-Ram
Michal Lev-Ram
Special Correspondent
Down Arrow Button Icon
October 13, 2020, 8:11 AM ET
Sarah Morris/Getty Images

California has had a rough few months. There was the summer surge in COVID cases, wildfires that set grim new records—officials have now announced that 4 million acres have been burned throughout the state—and the subsequent toxic, smoke-filled air that enveloped the West Coast, sometimes for weeks on end. In other words: The Golden State could use a ray of sunshine. 

There is promising news, though, too—for those who aim to diversify corporate boards. Today, new data on women’s representation on corporate boards in California is being revealed. The report, made exclusively available to Fortune, was commissioned by California Partners Project, a nonprofit co-founded by the state’s First Partner, Jennifer Siebel Newsom. Siebel Newsom’s organization shared the findings with Fortune ahead of her appearance at the Fortune Most Powerful Women Next Gen Summit on Tuesday.  

It all started in 2018, when then-Governor Jerry Brown signed a bill into law to require publicly-held companies headquartered in the state to have at least one woman on their board of directors by the end of 2019. For the time being, companies are encouraged to comply with the law, though financial repercussions from the state could kick in at a later date. But as the most recent findings show, the impact of the new regulations is already being felt: The report from California Partners Project concluded that, while in 2018, nearly 30% of public company boards in California consisted of men alone, that figure has now gone down to less than 3%. In real numbers, that means that 669 board seats have been filled by women since 2018. In Siebel Newsom’s view, that is a resounding success. 

“There is this positive radiation that happens when women are at the table making decisions,” says Siebel Newsom, a filmmaker who has focused much of her work on gender equity, in a phone interview with Fortune. 

Siebel Newsom points out that companies with more diverse boards have been found to drive better business performance across several metrics, including stock performance. This data is nothing new—back in 2012, Credit Suisse issued a report that showed large-cap companies with at least one woman on their board outperformed those with no women on their board by 26% over a six-year period. And other studies have shown similarly positive trends. But that doesn’t mean that action followed the data. In fact, the California law is the first such mandate in the country. (Some other countries, meanwhile, like Germany, do have board diversity mandates.)

Siebel Newsom is hopeful that other states will follow California’s lead. “We are the fifth largest economy in the world,” she says. “If we can get this right, we have an opportunity to inspire the rest of the country and other countries.”

Already, Washington State has signed its own board diversity bill into law, and several other states—like Hawaii and New Jersey—have explored similar mandates. But not everyone is a fan. Some have challenged California’s law and its gender quotas as “unconstitutional,” or worried that the law would actually backfire, creating a situation where women who are not qualified are somehow hurried into board positions before they are ready to serve in that capacity. 

“Can I call it B.S.?” Siebel Newsom says, when asked how she responds to such concerns. “Women are talented, women are ready and there are so many women who could add value to any board—public, private, or non-profit. This is just an ‘old boys’ club’ narrative.”

In the meantime, California is moving forward. By the end of 2021, some boards will be required to appoint two or three women—depending on the size of their board of directors. And just last month, Siebel Newsom’s husband, Governor Gavin Newsom, signed another law: This one requires publicly traded corporations headquartered in the state to appoint board members from underrepresented racial and ethnic backgrounds.

About the Author
Michal Lev-Ram
By Michal Lev-RamSpecial Correspondent
Twitter icon

Michal Lev-Ram is a special correspondent covering the technology and entertainment sectors for Fortune, writing analysis and longform reporting.

See full bioRight Arrow Button Icon

Latest in MPW

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • World's Most Admired Companies
  • See All Rankings
  • Lists Calendar
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Latest in MPW

Aerie built a $2 billion brand by rejecting Victoria’s Secret’s old playbook. Now it wants to win the AI backlash
C-SuiteRetail
Aerie built a $2 billion brand by rejecting Victoria’s Secret’s old playbook. Now it wants to win the AI backlash
By Phil WahbaApril 30, 2026
1 day ago
Emma Grede, who helped found the $5 billion Skims empire, rejects ‘celebrity CEO’ label: ‘I’m a CEO who’s done so well you know my name’
SuccessEntrepreneurship
Emma Grede, who helped found the $5 billion Skims empire, rejects ‘celebrity CEO’ label: ‘I’m a CEO who’s done so well you know my name’
By Cheyann HarrisApril 29, 2026
2 days ago
She left Citigroup after 18 years as one of its top women. Why Ida Liu chose HSBC as her next move
NewslettersMPW Daily
She left Citigroup after 18 years as one of its top women. Why Ida Liu chose HSBC as her next move
By Nicholas GordonApril 27, 2026
4 days ago
Trek spent over $300,000 closing women’s cycling’s prize-money gap. Its CEO says the point is to make the checks obsolete
MPWSports
Trek spent over $300,000 closing women’s cycling’s prize-money gap. Its CEO says the point is to make the checks obsolete
By Catherina GioinoApril 26, 2026
5 days ago
Meet the founder who started over at 50 and worked 20-hour days to build a multimillion dollar cookie dough empire—and still won’t take a day off
EuropeFortune The Good Life
Meet the founder who started over at 50 and worked 20-hour days to build a multimillion dollar cookie dough empire—and still won’t take a day off
By Orianna Rosa RoyleApril 26, 2026
5 days ago
Fortune 500 Power Moves: Which executives gained and lost power this week
C-SuiteFortune 500 Power Moves
Fortune 500 Power Moves: Which executives gained and lost power this week
By Fortune EditorsApril 24, 2026
7 days ago

Most Popular

China dominates the world's lithium supply. The U.S. just found 328 years' worth in its own backyard
North America
China dominates the world's lithium supply. The U.S. just found 328 years' worth in its own backyard
By Jake AngeloApril 30, 2026
20 hours ago
Apple cofounder Ronald Wayne—whose stake would be worth up to $400 billion had he not sold it in 1976—says that at 91, he has no regrets
Success
Apple cofounder Ronald Wayne—whose stake would be worth up to $400 billion had he not sold it in 1976—says that at 91, he has no regrets
By Preston ForeApril 27, 2026
4 days ago
Accenture's Julie Sweet blew up 50 years of company history. She says the hardest part is still ahead
Conferences
Accenture's Julie Sweet blew up 50 years of company history. She says the hardest part is still ahead
By Nick LichtenbergApril 29, 2026
2 days ago
America shot its arsenal empty in 2 wars. Now it needs Beijing's permission to reload
Commentary
America shot its arsenal empty in 2 wars. Now it needs Beijing's permission to reload
By Steve H. Hanke and Jeffrey WengApril 30, 2026
20 hours ago
Google Cloud revenue is now 18% of Alphabet's business. Is this the beginning of the end of Google's search identity?
Big Tech
Google Cloud revenue is now 18% of Alphabet's business. Is this the beginning of the end of Google's search identity?
By Alexei OreskovicApril 29, 2026
2 days ago
Exclusive: America's largest Black-owned bank launches podcast with mission to unlock hidden shame holding back generational wealth
Banking
Exclusive: America's largest Black-owned bank launches podcast with mission to unlock hidden shame holding back generational wealth
By Nick LichtenbergApril 29, 2026
2 days ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.