When was ZS Pharma founded?

ZS Pharma was founded in 2008 and raised its 1st funding round 2 years after it was founded.

Where is ZS Pharma located?

ZS Pharma is headquartered in San Mateo, United States.

How many employees does ZS Pharma have?

As of Mar 01, 2026, the latest employee count at ZS Pharma is 50 - 199.

Is ZS Pharma a funded company?

ZS Pharma is a funded company, having raised a total of $110M across 7 funding rounds to date. The company's 1st funding round was a $***** Seed round, raised on Aug 30, 2010.

How much is ZS Pharma worth?

The last known valuation of ZS Pharma was $***** as of Nov 06, 2015.

When was the latest funding round of ZS Pharma?

ZS Pharma's latest funding was a $***** Venture Debt round on Jul 17, 2014, with participation from 1 investor.

ZS Pharma - 2026 Company Profile, Team & Funding

Q: Is ZS Pharma an acquired company?

ZS Pharma got acquired by AstraZeneca on Nov 06, 2015.

Company Details

Develop ion-trap therapies for the treatment of hyperkalemia. Its lead therapeutic candidate ZS-9 uses technology that is hypothesized to mimic natural ion channels and stop ions other than potassium and ammonium to enter its crystalline structure. It is currently being tested in late-stage clinical trials and is awaiting a final FDA decision. ZS-9 (sodium zirconium cyclosilicate) is a selective oral sorbent that traps potassium ions throughout the gastrointestinal tract. ZS Pharma is also pursuing the discovery of additional drug candidates that utilize selective ion-trap technology for the treatment of liver disease.

Website: www.zspharma.com
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Email ID: *****@zspharma.com

Key Metrics

Founded Year

2008

Location

San Mateo, United States

Stage

Acquired

Total Funding

$110M in 7 rounds

Latest Funding Round

Venture Debt, Jul 17, 2014, $*****

Last Known Valuation

$***** as on Nov 06, 2015

Investors

Alta Partners & 15 more

Employee Count

50 - 199 as on Mar 01, 2026

Exit Details

Acquired by AstraZeneca (Nov 06, 2015)

View ZS Pharma's full profile

ZS Pharma got acquired by AstraZeneca on Nov 06, 2015 at an acquisition amount of $*****.

Click here to take a look at ZS Pharma's acquisition in detail

ZS Pharma has raised a total funding of $110M over 7 rounds. Its first funding round was on Aug 30, 2010. Its latest funding round was a Venture Debt round on Jul 17, 2014 for $*****. 1 investor participated in its latest round. ZS Pharma has 16 institutional investors.

Here is the list of recent funding rounds of ZS Pharma:

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Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Jul 17, 2014	1916206	Venture Debt	8924473	5093261	1039496	3365729
Mar 10, 2014	5103324	Series D	9764244	7108295	6750388	RA Capital Management & 7 more
Oct 09, 2012	2144730	Series C	6084995	9771771	Alta Partners & 4 more	8809865