How many times has Pentair (PNR) split its stock?

Our data shows 11 stock splits for Pentair (PNR). See the table on this page for dates and ratios.

What is a stock split?

A stock split increases the number of shares outstanding while proportionally lowering the share price, so market capitalization is unchanged. Chart and return tools often use split-adjusted prices. The split table on this page refreshes daily from our corporate-actions data.

What is the cumulative split multiple for PNR?

Multiplying each split factor in chronological order gives a cumulative multiple of about 34.8057 from the oldest split through the most recent one in our table.

Does a stock split change the value of my PNR investment?

A split does not change the total market value of your holding by itself; you own more shares at a lower per-share price. Dividends per share and some per-share metrics are often adjusted for splits.

Stock split history for Pentair (PNR)

Pentair stock (symbol: PNR) underwent a total of 11 stock splits.

The most recent stock split occurred on May 1, 2018.

One PNR share bought prior to October 8, 1975 would equal 34.8057 PNR shares today.

The same share count applies to one share bought at IPO on May 3, 1973.

Pentair

PNR

Stock splits history (since IPO on May 3, 1973)

Cumulative multiple is the running product of split factors from the chronologically oldest row through each date. Rows are listed newest-first, so the cumulative column reads forward in time from the bottom of the table toward the top.

Date	Type	Split	Multiple	Cumulative multiple	Pre-split price	Post-split price
May 1, 2018	Stock split	1489:1000	x1.489	x34.8057	$67.27	$45.22
June 9, 2004	Stock split	2:1	x2	x23.3752	$64.12	$32.07
February 20, 1996	Stock split	2:1	x2	x11.6876	$55.99	$28.50
June 14, 1993	Stock split	3:2	x1.5	x5.8438	$51.46	$34.49
May 27, 1988	Stock split	11:10	x1.1	x3.8959	$29.38	$26.98
March 17, 1986	Stock split	11:10	x1.1	x3.5417	$33.30	$30.96
April 1, 1985	Stock split	5:4	x1.25	x3.2197	$29.46	$23.46
November 16, 1983	Stock split	5:4	x1.25	x2.5758	$27.03	$21.62
February 25, 1982	Stock split	5:4	x1.25	x2.0606	$17.12	$13.75
July 24, 1978	Stock split	3:2	x1.5	x1.6485	$38.64	$18
October 8, 1975	Stock split	1099:1000	x1.099	x1.099	$7.31	$7.12

May 1, 2018

Type: Stock split
Split: 1489:1000
Multiple: x1.489
Cumulative multiple: x34.8057
Pre-split price: $67.27
Post-split price: $45.22

June 9, 2004

Type: Stock split
Split: 2:1
Multiple: x2
Cumulative multiple: x23.3752
Pre-split price: $64.12
Post-split price: $32.07

February 20, 1996

Type: Stock split
Split: 2:1
Multiple: x2
Cumulative multiple: x11.6876
Pre-split price: $55.99
Post-split price: $28.50

June 14, 1993

Type: Stock split
Split: 3:2
Multiple: x1.5
Cumulative multiple: x5.8438
Pre-split price: $51.46
Post-split price: $34.49

May 27, 1988

Type: Stock split
Split: 11:10
Multiple: x1.1
Cumulative multiple: x3.8959
Pre-split price: $29.38
Post-split price: $26.98

March 17, 1986

Type: Stock split
Split: 11:10
Multiple: x1.1
Cumulative multiple: x3.5417
Pre-split price: $33.30
Post-split price: $30.96

April 1, 1985

Type: Stock split
Split: 5:4
Multiple: x1.25
Cumulative multiple: x3.2197
Pre-split price: $29.46
Post-split price: $23.46

November 16, 1983

Type: Stock split
Split: 5:4
Multiple: x1.25
Cumulative multiple: x2.5758
Pre-split price: $27.03
Post-split price: $21.62

February 25, 1982

Type: Stock split
Split: 5:4
Multiple: x1.25
Cumulative multiple: x2.0606
Pre-split price: $17.12
Post-split price: $13.75

July 24, 1978

Type: Stock split
Split: 3:2
Multiple: x1.5
Cumulative multiple: x1.6485
Pre-split price: $38.64
Post-split price: $18

October 8, 1975

Type: Stock split
Split: 1099:1000
Multiple: x1.099
Cumulative multiple: x1.099
Pre-split price: $7.31
Post-split price: $7.12

Pre-split price is the final regular-session close on a trading day strictly before the split calendar date. Post-split price is the first session open on or after that date. Both values come from unadjusted end-of-day bars for the company's primary listing.

The Type column reflects the data feed's event category (for example stock split vs stock dividend). When the feed labels a generic split but the ratio is reverse (e.g. 1:10), we show reverse stock split. Optional editorial context for a row appears next to the split ratio as an info icon (hover or keyboard focus on desktop; tap on mobile). The same text is listed under Row notes when that block is expanded.

Wondering why some rows show ratios like 51:50 or 2000:1973? Read: stock split ratios explained →How the cumulative column is computed: cumulative split multiplier explained. For ratios driven by spin-offs, see spin-offs explained. Or read the methodology for how prices and cumulative multiples are computed.

Stock splits for companies in the Industrials sector

8 peers sorted by market cap

Compare split histories across large names in the same sector. Each ticker links to its own split table; the list excludes ETFs and funds and follows our daily company snapshot.

Ticker	Company	Market cap
CAT	Caterpillar Inc.	$380.54B
GE	GE Aerospace	$302.16B
RTX	RTX Corporation	$236.58B
BA	The Boeing Company	$181.88B
ETN	Eaton Corporation plc	$160.26B
UNP	Union Pacific Corporation	$158.96B
DE	Deere & Company	$152.30B
HON	Honeywell International Inc.	$134.92B

Frequently asked questions

How many times has Pentair (PNR) split its stock?: Our data shows 11 stock splits for Pentair (PNR). See the table on this page for dates and ratios.
What is a stock split?: A stock split increases the number of shares outstanding while proportionally lowering the share price, so market capitalization is unchanged. Chart and return tools often use split-adjusted prices. The split table on this page refreshes daily from our corporate-actions data.
What is the cumulative split multiple for PNR?: Multiplying each split factor in chronological order gives a cumulative multiple of about 34.8057 from the oldest split through the most recent one in our table.
Does a stock split change the value of my PNR investment?: A split does not change the total market value of your holding by itself; you own more shares at a lower per-share price. Dividends per share and some per-share metrics are often adjusted for splits.