RYAN ARTHUR F 4
4 · REGENERON PHARMACEUTICALS, INC. · Filed Mar 3, 2026
Research Summary
AI-generated summary of this filing
Regeneron (REGN) Director Ryan Arthur F Sells 100 Shares
What Happened
Ryan Arthur F, a director of Regeneron Pharmaceuticals (REGN), sold a total of 100 shares in multiple open‑market transactions on March 2, 2026. The sales were executed at prices ranging roughly from $777.46 to $789.28, for an aggregate proceeds of approximately $78,548. These were disposals (sales), not purchases.
Key Details
- Transaction date: March 2, 2026; Form 4 filed March 3, 2026 (timely — within SEC filing window).
- Total sold: 100 shares for total proceeds of ~$78,548. Individual trade prices ranged about $777.46–$789.28.
- Transaction type/code: S = Sale (open market).
- Footnotes: Sales were made pursuant to a Rule 10b5‑1 trading plan adopted October 31, 2025 (F1). Several footnotes report volume‑weighted average prices for grouped sales and note more detailed per‑price breakdowns are available upon request (F2–F13).
- Shares owned after the transactions: Not specified in the provided excerpt of the filing.
Context
These sales were reported as part of a predetermined 10b5‑1 plan, which is a common mechanism insiders use to sell shares on an automated schedule and is generally viewed as a routine disposition rather than an ad hoc signal about company prospects. The filing shows no option exercises, gifts, or tax‑withholding share transfers—only open‑market sales.
Insider Transaction Report
Form 4
RYAN ARTHUR F
Director
Transactions
- Sale
Common Stock
[F1][F2]2026-03-02$777.46/sh−7$5,442→ 17,796 total - Sale
Common Stock
[F1][F3]2026-03-02$778.30/sh−2$1,557→ 17,794 total - Sale
Common Stock
[F1][F4]2026-03-02$779.69/sh−5$3,898→ 17,789 total - Sale
Common Stock
[F1][F5]2026-03-02$780.69/sh−3$2,342→ 17,786 total - Sale
Common Stock
[F1][F6]2026-03-02$781.21/sh−2$1,562→ 17,784 total - Sale
Common Stock
[F1][F7]2026-03-02$782.62/sh−2$1,565→ 17,782 total - Sale
Common Stock
[F1][F8]2026-03-02$783.62/sh−10$7,836→ 17,772 total - Sale
Common Stock
[F1][F9]2026-03-02$784.48/sh−9$7,060→ 17,763 total - Sale
Common Stock
[F1][F10]2026-03-02$785.48/sh−11$8,640→ 17,752 total - Sale
Common Stock
[F1][F11]2026-03-02$786.61/sh−7$5,506→ 17,745 total - Sale
Common Stock
[F1][F12]2026-03-02$787.34/sh−2$1,575→ 17,743 total - Sale
Common Stock
[F1]2026-03-02$788.96/sh−20$15,779→ 17,723 total - Sale
Common Stock
[F1][F13]2026-03-02$789.28/sh−20$15,786→ 17,703 total
Footnotes (13)
- [F1]Disposition/acquisition made pursuant to a plan intended to comply with Rule 10b5-1(c) adopted on October 31, 2025.
- [F10]Represents volume-weighted average price of sales of 11 shares of Company stock on March 2, 2026 at prices ranging from $785.02 to $785.97. Upon request by the Commission staff, the Company, or a security holder of the Company, the reporting person will provide full information regarding the number of shares sold by the reporting person on March 2, 2026 at each separate price.
- [F11]Represents volume-weighted average price of sales of 7 shares of Company stock on March 2, 2026 at prices ranging from $786.12 to $786.99. Upon request by the Commission staff, the Company, or a security holder of the Company, the reporting person will provide full information regarding the number of shares sold by the reporting person on March 2, 2026 at each separate price.
- [F12]Represents volume-weighted average price of sales of 2 shares of Company stock on March 2, 2026 at prices ranging from $787.02 to $787.66. Upon request by the Commission staff, the Company, or a security holder of the Company, the reporting person will provide full information regarding the number of shares sold by the reporting person on March 2, 2026 at each separate price.
- [F13]Represents volume-weighted average price of sales of 20 shares of Company stock on March 2, 2026 at prices ranging from $789.27 to $789.37. Upon request by the Commission staff, the Company, or a security holder of the Company, the reporting person will provide full information regarding the number of shares sold by the reporting person on March 2, 2026 at each separate price.
- [F2]Represents volume-weighted average price of sales of 7 shares of Company stock on March 2, 2026 at prices ranging from $777.08 to $777.91. Upon request by the Commission staff, the Company, or a security holder of the Company, the reporting person will provide full information regarding the number of shares sold by the reporting person on March 2, 2026 at each separate price.
- [F3]Represents volume-weighted average price of sales of 2 shares of Company stock on March 2, 2026 at prices ranging from $778.27 to $778.33. Upon request by the Commission staff, the Company, or a security holder of the Company, the reporting person will provide full information regarding the number of shares sold by the reporting person on March 2, 2026 at each separate price.
- [F4]Represents volume-weighted average price of sales of 5 shares of Company stock on March 2, 2026 at prices ranging from $779.36 to $779.95. Upon request by the Commission staff, the Company, or a security holder of the Company, the reporting person will provide full information regarding the number of shares sold by the reporting person on March 2, 2026 at each separate price.
- [F5]Represents volume-weighted average price of sales of 3 shares of Company stock on March 2, 2026 at prices ranging from $780.13 to $780.99. Upon request by the Commission staff, the Company, or a security holder of the Company, the reporting person will provide full information regarding the number of shares sold by the reporting person on March 2, 2026 at each separate price.
- [F6]Represents volume-weighted average price of sales of 2 shares of Company stock on March 2, 2026 at prices ranging from $781.00 to $781.42. Upon request by the Commission staff, the Company, or a security holder of the Company, the reporting person will provide full information regarding the number of shares sold by the reporting person on March 2, 2026 at each separate price.
- [F7]Represents volume-weighted average price of sales of 2 shares of Company stock on March 2, 2026 at prices ranging from $782.25 to $782.99. Upon request by the Commission staff, the Company, or a security holder of the Company, the reporting person will provide full information regarding the number of shares sold by the reporting person on March 2, 2026 at each separate price.
- [F8]Represents volume-weighted average price of sales of 10 shares of Company stock on March 2, 2026 at prices ranging from $783.25 to $783.99. Upon request by the Commission staff, the Company, or a security holder of the Company, the reporting person will provide full information regarding the number of shares sold by the reporting person on March 2, 2026 at each separate price.
- [F9]Represents volume-weighted average price of sales of 9 shares of Company stock on March 2, 2026 at prices ranging from $784.02 to $784.95. Upon request by the Commission staff, the Company, or a security holder of the Company, the reporting person will provide full information regarding the number of shares sold by the reporting person on March 2, 2026 at each separate price.
Signature
/s/ Arthur F. Ryan|2026-03-03