InsideArbitrage Event Driven Monitor – October 9, 2025

Merger Arbitrage

1. ARIS: Western Midstream (WES) and Aris Water (ARIS) announced the preliminary results of the elections made by Aris securityholders regarding the form of merger consideration to be received in connection with Western’s acquisition of Aris. As a result of these elections, it is estimated that roughly 26.6 million Western Common Units will be issued and $415 million in cash will be paid to Aris securityholders.
2. STAA: Broadwood Partners announced that Glass Lewis recommended that the shareholders of STAAR Surgical (STAA) vote “AGAINST” the proposed acquisition of STAAR by Alcon (ALC).
3. PINC: Premier (PINC) filed the preliminary proxy statement for its acquisition by Patient Square. The company expects the merger to be completed by the first quarter of 2026.

You can check out new deals, all deal updates, and spreads on active deals in our Merger Arbitrage Tool for premium members here.

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