Every Form 4 that Rein Therapeutics, Inc. (RNTX) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow RNTX and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full RNTX filings page.
Rein Therapeutics director Josef H. von Rickenbach reported a series of open-market purchases of Rein Therapeutics, Inc. common stock. Between May 21 and May 27, 2026, he bought a total of 47,060 shares at weighted average prices slightly above $1.00 per share.
The individual purchases were 3,420 shares at $1.0422 on May 21, 15,950 shares at $1.0475 on May 22, 23,190 shares at $1.0552 on May 26, and 4,500 shares at $1.0708 on May 27, all as non-derivative common stock transactions. Following these purchases, he directly owns 62,514 shares of Rein Therapeutics common stock.
Rein Therapeutics, Inc. director and officer James Brian Windsor reported both a stock purchase and a new option grant. On April 30, 2026, he bought 25,000 shares of common stock at $1.00 per share in the company’s follow-on public offering, bringing his direct common stock holdings to 27,046 shares.
On May 8, 2026, he received a stock option covering 150,000 shares of common stock at an exercise price of $1.17 per share, expiring on May 8, 2036. Twenty-five percent of the option is scheduled to vest on May 8, 2027, with the remainder vesting in equal monthly installments through May 8, 2031.
Rein Therapeutics, Inc. (RNTX) reported insider buying by a 10% owner group. On 11/14/2025, entities affiliated with Voss Capital reported purchasing 104,183 shares of Rein Therapeutics common stock at a weighted average price of $1.2247 per share, with individual trades ranging from $1.1800 to $1.2500. Following this transaction, Voss Value Master Fund, LP is shown as beneficially owning 926,441 shares indirectly, and Voss Value-Oriented Special Situations Fund, LP is shown as beneficially owning 500,000 shares indirectly. The reporting persons state that, as a group, they beneficially own over 10% of Rein Therapeutics’ outstanding common stock and each disclaims beneficial ownership beyond its pecuniary interest.
Rein Therapeutics (RNTX): Voss Capital–affiliated entities reported open‑market purchases of common stock. On 10/24/2025, Voss Value Master Fund, L.P. bought 30,176 shares at $1.3904, bringing its beneficially owned balance to 729,616 shares. On 10/27/2025, the fund bought 92,642 shares at $1.37, for a new total of 822,258 shares.
Voss Value‑Oriented Special Situations Fund, L.P. bought 4,840 shares at $1.3687 on 10/27/2025, increasing to 321,608 shares, and 178,392 shares at $1.39 on 10/28/2025, increasing to 500,000 shares. The holdings are reported as indirect through the respective funds. The reporting persons state they are members of a group that collectively beneficially owns over 10% of the outstanding common stock.