David O. Watson - Net Worth and Insider Trading
David O. Watson Net Worth
The estimated net worth of David O. Watson is at least $6 Million dollars as of 2026-09-11. David O. Watson is the General Counsel of Apellis Pharmaceuticals Inc and owns about 148,667 shares of Apellis Pharmaceuticals Inc (APLS) stock worth over $6 Million. Details can be seen in David O. Watson's Latest Holdings Summary section.
Disclaimer: The insider information is derived from SEC filings. The estimated net worth is based on the final shares held after open market or private purchases and sales of common stock with a transaction code of "P" or "S" on Form 4, assuming that David O. Watson has not made any transactions after 2026-01-22 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.
Transaction Summary of David O. Watson
David O. Watson Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, David O. Watson owns 1 companies in total, including Apellis Pharmaceuticals Inc (APLS) .
Click here to see the complete history of David O. Watson’s form 4 insider trades.
Insider Ownership Summary of David O. Watson
| Ticker | Company | Transaction Date | Type of Owner |
|---|---|---|---|
| APLS | Apellis Pharmaceuticals Inc | 2026-01-22 | General Counsel |
David O. Watson Latest Holdings Summary
David O. Watson currently owns a total of 1 stock. David O. Watson owns 148,667 shares of Apellis Pharmaceuticals Inc (APLS) as of January 22, 2026, with a value of $6 Million.
Latest Holdings of David O. Watson
| Ticker | Company | Latest Transaction Date | Shares Owned | Current Price ($) | Current Value ($) |
|---|---|---|---|---|---|
| APLS | Apellis Pharmaceuticals Inc | 2026-01-22 | 148,667 | 41.03 | 6,099,807 |
Holding Weightings of David O. Watson
David O. Watson Form 4 Trading Tracker
According to the SEC Form 4 filings, David O. Watson has made a total of 27 transactions in Apellis Pharmaceuticals Inc (APLS) over the past 5 years, including 0 buys and 27 sells. The most-recent trade in Apellis Pharmaceuticals Inc is the sale of 7,832 shares on January 22, 2026, which brought David O. Watson around $170,503.
Insider Trading History of David O. Watson
* The information on this page (including Insider Trading Shares, Share Changes, Cost, etc.) is sourced exclusively from Form 4 filings and does not incorporate any data from 13F or 13D/G filings. As a result, it may differ from the values shown on the Guru page.
- 1
David O. Watson Trading Performance
David O. Watson Ownership Network
Ownership Network List of David O. Watson
Ownership Network Relation of David O. Watson

David O. Watson Owned Company Details
What does Apellis Pharmaceuticals Inc do?
Who are the key executives at Apellis Pharmaceuticals Inc?
David O. Watson is the General Counsel of Apellis Pharmaceuticals Inc. Other key executives at Apellis Pharmaceuticals Inc include other: See footnotes Biogen Inc. , Senior Vice President Mark Jeffrey Delong , and Chief Medical Officer Caroline Baumal .
Apellis Pharmaceuticals Inc (APLS) Insider Trades Summary
Over the past 18 months, David O. Watson made 11 insider transaction in Apellis Pharmaceuticals Inc (APLS) with a net sale of 71,087. Other recent insider transactions involving Apellis Pharmaceuticals Inc (APLS) include a net sale of 429,650 shares made by Cedric Francois , a net sale of 69,764 shares made by Timothy Eugene Sullivan , and a net sale of 4,035 shares made by James George Chopas .
In summary, during the past 3 months, insiders sold 0 shares of Apellis Pharmaceuticals Inc (APLS) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 704,024 shares of Apellis Pharmaceuticals Inc (APLS) were sold and 0 shares were bought by its insiders, resulting in a net sale of 704,024 shares.
Apellis Pharmaceuticals Inc (APLS)'s detailed insider trading history can be found in Insider Trading Tracker table.
Apellis Pharmaceuticals Inc Insider Transactions
David O. Watson Mailing Address
Above is the net worth, insider trading, and ownership report for David O. Watson. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, David O. Watson's mailing address is: Crestwood Ky 40014.