CastleKnight Master Fund LP Discloses New 6.2% Stake in AdvanSix Inc. (ASIX)

On May 14, 2026, CastleKnight Master Fund LP and its affiliates, including Aaron Weitman, filed a Schedule 13G disclosing a new 6.2% ownership stake in AdvanSix Inc. (ASIX). The reporting group beneficially owns 1,666,382 shares of common stock, which were acquired for investment purposes rather than to influence control of the issuer. This filing marks a significant increase from a zero-share position previously held by the reporting persons. The group includes CastleKnight Master Fund LP, CastleKnight Fund GP LLC, CastleKnight Management LP, CastleKnight Management GP LLC, Weitman Capital LLC, and Aaron Weitman. All shares are reported with shared voting and dispositive power among the reporting entities. Aaron Weitman serves as the manager for the various entities involved and is identified as a control person for CastleKnight Management LP. The transaction that triggered this filing occurred on May 7, 2026. This filing was made pursuant to Rule 13d-1(c) under the Securities Exchange Act of 1934.