After a year during which he didn’t let go of any Facebook stock, Mark Zuckerberg is back to his selling ways.

Since November 9, 2020, the Facebook cofounder and CEO, who is worth $127 billion, has unloaded shares nearly every business day, according to filings to the Securities and Exchange Commission. Overall, he’s sold 9.4 million shares, worth $2.8 billion, over the past eight months through Wednesday. About 90% of the sales were made by his philanthropic and advocacy organization, the Chan Zuckerberg Initiative (CZI). A smaller portion—roughly $200 million after taxes, per Forbes’ estimates—went into his own pockets. Zuckerberg, who is the world’s fifth richest person, has now winnowed his stake in Facebook to about 14%, down from 28% at the time of the company’s IPO.

Since Facebook went public in May 2012, Zuckerberg and CZI have sold more than 132 million shares of the social media giant, worth nearly $15 billion in total. Of that, he has personally pocketed around $2.1 billion after taxes, Forbes estimates. Zuckerberg began consistently selling Facebook stock in 2016, the year after he and his wife Priscilla Chan established CZI. At the time, the couple penned a letter to their unborn daughter, pledging to give 99% of their Facebook shares over their lifetimes toward areas such as education and curing diseases; the shares were worth $45 billion then. Zuckerberg and CZI’s sales reached a peak in 2018, when they offloaded $5.3 billion worth of shares—the vast majority through CZI.

But Zuckerberg ceased selling in November 2019, only making a single donation through CZI of 204,700 shares worth $60 million last year to the Silicon Valley Community Foundation (SVCF), a Mountain View, California-based nonprofit that among other things operates charitable donor-advised funds. As of 2018, Zuckerberg and Chan had donated nearly $2 billion worth of Facebook shares to SVCF.