GROSSO CHRISTOPHER G 4

What Happened

• Christopher G. Grosso, listed as a 10% owner of RADNOSTIX, acquired a total of 581,536 shares on February 17, 2025 through four "other acquisition" transactions (code J). The transactions show zero cash consideration ($0.00 per share), indicating the shares were issued in lieu of cash dividends rather than bought on the open market.

Key Details

• Transaction date: 2025-02-17 (filed with the SEC on 2026-04-30).
• Shares acquired (by line): 269,999; 40,384; 40,384; 230,769 — total 581,536 shares at $0.00 per share.
• Shares owned after the transactions: not specified in the provided excerpt.
• Footnote: F1 says these shares were issued in lieu of cash at the holder’s option for dividends payable on the issuer’s Series C Redeemable Convertible Preferred Stock.
• Filing timeliness: The Form 4 was filed on April 30, 2026 for transactions dated February 17, 2025 — this appears to be a late report, reducing the timeliness of the disclosure.

Context

• These were acquisitions tied to dividend conversion/election (not open-market purchases or option exercises). For a 10% owner, such transactions can reflect holdings-management mechanics (preferred-stock dividend elections) rather than a market-timed bet; they should be interpreted as non-cash corporate actions rather than routine insider buying.