Dive Brief:

• Water treatment company Pentair named Fiserv and Honeywell veteran Bob Hau as its chief financial officer and an executive vice president, effective Nov. 1, according to a Tuesday press release and a filing with the Securities and Exchange Commission.
• Pentair alum Bob Fishman, who assumed the interim CFO role in July — just five months after retiring from the company’s top finance seat — will step down from the interim position as Hau steps in, according to the SEC filing.
• Hau is a “proven leader with the strategic perspective, financial expertise and results-oriented approach to help Pentair drive performance and continue creating long-term shareholder value,” CEO and President John L. Stauch said in a statement included in the release.  

Dive Insight:

London-based Pentair provides home pool and spa equipment as well as water treatment products.

The CFO shift comes just about two months after Fishman, who previously served a six-year span as Pentair’s top finance officer, returned to the water treatment business in the interim seat, CFO Dive reported at the time. Fishman took over from his successor Nicholas Brazis, who departed the water treatment company after just five months, to take the CFO seat at cable and wire maker Southwire.

Hau previously logged a 10-year career at payments processor firm Fiserv, serving as its CFO from March 2016 to October 2025, and as a senior advisor from November 2025 to March of this year, according to his LinkedIn profile. He previously served as CFO for technology company TE Connectivity, as well as for Lennox International, and as CFO of aerospace for Honeywell.

Hau will receive an annual base salary of $775,000 and will be eligible for an annual cash bonus of 100% of his base pay, according to the filing. He will also receive an initial equity award of restricted stock units with a grant date value of $2.5 million, and a new hire cash bonus of $200,000, according to the filing.

The water treatment company is strengthening its finance bench, tapping a new CFO and recently appointing a new director to its audit and finance committee, as it seeks to navigate slumping sales and to close a pending $1.4 billion acquisition of Taco Group Holdings, an hydronic and water-based solutions provider.

The Taco Group acquisition “significantly strengthens” the company’s positions in key high-growth markets, including HVAC, data centers, and related infrastructure builds, Stauch said during the company’s second quarter earnings call on July 28.