Pentair nabs ex-Fiserv CFO for finance chief

Former Fiserv CFO Bob Hau is stepping into Pentair’s top finance seat as it works to close its $1.4 billion acquisition of Taco Group by this year’s fourth quarter.

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markets open in 1h 16m S&P Futures 7,872.25 +16.50 +0.21% Dow Futures 52,114.00 +179.00 +0.34% Nasdaq Futures 30,790.00 -1.50 -0.00% Russell 2000 Futures 2,808.10 +8.00 +0.29% 10-Yr Bond 5.22 -0.02 -0.44% VIX 15.33 +0.06 +0.39% Gold 4,167.80 -9.50 -0.23% Bitcoin USD 83,746.06 +484.06 +0.58% Crude Oil Nov 26 95.65 +1.51 +1.60% US Private Equity 10,967.34 -1.52 -0.01% ADVERTISEMENT Pentair nabs ex-Fiserv CFO for finance chief View of a backyard pool · CFO Dive · Getty Images Grace Noto September 22, 2026 4 min read PNR +1.22% FISV +1.32% HON -1.12% This story was originally published on CFO Dive.

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Water treatment company Pentair named Fiserv and Honeywell veteran Bob Hau as its CFO and EVP effective Nov.

1, according to a Tuesday press release and securities filing.

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 upon Hau's appointment , according to the filing with the Securities and Exchange Commission.

He will remain with the London-based company, which provides home pool and spa equipment as well as water treatment products, through the Nov.

1 effective date to ensure a smooth transition.

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.

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.

Brazis' successor Hau previously logged a 10-year career at payments firm Fiserv Inc, 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, EVP and CFO for Lennox International, and as VP of finance, CFO, 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 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.