PHAT (Phathom Pharmaceuticals) Effective Interest Rate on Debt %: 33.42% (As of Mar. 2026)


PHAT Phathom Pharmaceuticals Inc PHAT
23 GF Score
Price $12.61
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What is Phathom Pharmaceuticals Effective Interest Rate on Debt %?

Phathom Pharmaceuticals PHAT +3.70% 23 Effective Interest Rate on Debt % is 33.42% as of Mar. 2026. GuruFocus rates PHAT with a GF Score™ of 23/100. The stock has 3 warning signs investors should review.

Effective Interest Rate on Debt % is the usage rate that a borrower actually pays on a debt. It is calculated as the positive value of Interest Expense divided by its average total debt. Total debt equals to Long-Term Debt & Capital Lease Obligation plus Short-Term Debt & Capital Lease Obligation. Phathom Pharmaceuticals's annualized positive value of Interest Expense for the quarter that ended in Mar. 2026 was $63.2 Mil. Phathom Pharmaceuticals's average total debt for the quarter that ended in Mar. 2026 was $189.1 Mil. Therefore, Phathom Pharmaceuticals's annualized Effective Interest Rate on Debt % for the quarter that ended in Mar. 2026 was 33.42%.


Phathom Pharmaceuticals  (NAS:PHAT) Effective Interest Rate on Debt % Explanation

Effective Interest Rate on Debt % measures the usage rate that a borrower actually pays on a debt.


Phathom Pharmaceuticals Effective Interest Rate on Debt % Related Terms


Phathom Pharmaceuticals Effective Interest Rate on Debt % Historical Data

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The historical data trend for Phathom Pharmaceuticals's Effective Interest Rate on Debt % can be seen below:

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

Phathom Pharmaceuticals Effective Interest Rate on Debt % Chart

Phathom Pharmaceuticals Annual Data
Trend Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Effective Interest Rate on Debt %
Get a 7-Day Free Trial 9.67 28.98 35.55 42.24 32.93

Phathom Pharmaceuticals Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
Effective Interest Rate on Debt % Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 35.65 34.22 30.99 31.16 33.42

PHAT vs GERN, ODTX, SPRY: Effective Interest Rate on Debt % Comparison

For the Biotechnology subindustry, Phathom Pharmaceuticals's Effective Interest Rate on Debt %, along with its competitors' market caps and Effective Interest Rate on Debt % data, can be viewed below:

* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.


Phathom Pharmaceuticals Effective Interest Rate on Debt % vs Biotechnology Industry

For the Biotechnology industry and Healthcare sector, Phathom Pharmaceuticals's Effective Interest Rate on Debt % distribution charts can be found below:

* The bar in red indicates where Phathom Pharmaceuticals's Effective Interest Rate on Debt % falls into.


PHAT
23GF Score
Phathom Pharmaceuticals Inc PHAT
Effective Interest Rate on Debt % is just one metric. See GF Score™, valuation, warning signs, and more.
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Phathom Pharmaceuticals Effective Interest Rate on Debt % Calculation

Phathom Pharmaceuticals's annualized Effective Interest Rate on Debt % for the fiscal year that ended in Dec. 2025 is calculated as

Effective Interest Rate on Debt %
=-1  *  Interest Expense/( (Total Debt  (A: Dec. 2024 )+Total Debt  (A: Dec. 2025 ))/ count )
=-1  *  -68.115/( (201.91+211.8)/ 2 )
=-1  *  -68.115/206.855
=32.93 %

where

Total Debt  (A: Dec. 2024 )
=Long-Term Debt & Capital Lease Obligation + Short-Term Debt & Capital Lease Obligation
=201.409 + 0.501
=201.91

Total Debt  (A: Dec. 2025 )
=Long-Term Debt & Capital Lease Obligation + Short-Term Debt & Capital Lease Obligation
=211.152 + 0.648
=211.8

Phathom Pharmaceuticals's annualized Effective Interest Rate on Debt % for the quarter that ended in Mar. 2026 is calculated as

Effective Interest Rate on Debt %
=-1  *  Interest Expense/( (Total Debt  (Q: Dec. 2025 )+Total Debt  (Q: Mar. 2026 ))/ count )
=-1  *  -63.188/( (211.8+166.303)/ 2 )
=-1  *  -63.188/189.0515
=33.42 %

where

Total Debt  (Q: Dec. 2025 )
=Long-Term Debt & Capital Lease Obligation + Short-Term Debt & Capital Lease Obligation
=211.152 + 0.648
=211.8

Total Debt  (Q: Mar. 2026 )
=Long-Term Debt & Capital Lease Obligation + Short-Term Debt & Capital Lease Obligation
=165.636 + 0.667
=166.303

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

In the calculation of annual Effective Interest Rate on Debt %, the Interest Expense of the last fiscal year and the average total debt over the fiscal year are used. In calculating the quarterly data, the Interest Expense data used here is four times the quarterly (Mar. 2026) interest expense data. Effective Interest Rate on Debt % is displayed in the 30-year financial page.

What does a Effective Interest Rate on Debt % of 33.42% mean?
Phathom Pharmaceuticals (PHAT) has a Effective Interest Rate on Debt % of 33.42% as of Mar. 2026. Effective interest rate on debt is the rate a company actually pays on its debt. View historical data on Phathom Pharmaceuticals and its competitors.
Is Phathom Pharmaceuticals' Effective Interest Rate on Debt % too high?
Phathom Pharmaceuticals' current Effective Interest Rate on Debt % is 33.42%. Overall, Phathom Pharmaceuticals has a GF Score™ of 23/100, reflecting its overall financial health beyond just this single metric.
How does Phathom Pharmaceuticals' Effective Interest Rate on Debt % compare to GERN and ODTX?
Phathom Pharmaceuticals' Effective Interest Rate on Debt % of 33.42% can be compared against companies in the Biotechnology industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Effective Interest Rate on Debt % for a Biotechnology company?
A good Effective Interest Rate on Debt % depends on the Biotechnology industry context. However, Effective Interest Rate on Debt % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Effective Interest Rate on Debt % mean?
A high Effective Interest Rate on Debt % can signal that a stock is expensive relative to its fundamentals. Effective interest rate on debt is the rate a company actually pays on its debt. View historical data on Phathom Pharmaceuticals and its competitors. Phathom Pharmaceuticals's current Effective Interest Rate on Debt % is 33.42%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Phathom Pharmaceuticals stock overvalued right now?
Phathom Pharmaceuticals (PHAT) has a current Effective Interest Rate on Debt % of 33.42%. The current Effective Interest Rate on Debt % is 33.42%. Phathom Pharmaceuticals' overall GF Score™ is 23/100 with 3 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Effective Interest Rate on Debt % calculated?
Effective Interest Rate on Debt % is calculated from a company's financial statements. For Phathom Pharmaceuticals (PHAT), the current Effective Interest Rate on Debt % is 33.42% as of Mar. 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

Phathom Pharmaceuticals Business Description

Address 100 Campus Drive, Suite 102, Florham Park, NJ, USA, 07932
Phathom Pharmaceuticals Inc operates as a clinical-stage biopharmaceutical company. The firm is focused on developing and commercializing novel treatments for gastrointestinal, or GI, diseases. Its product comprises vonoprazan, an oral small-molecule potassium competitive acid blocker medicine that blocks acid secretion in the stomach. Vonoprazan shows rapid, potent, and durable anti-secretory effects and has demonstrated clinical benefits in the treatment of gastroesophageal reflux disease, and in combination with antibiotics for the treatment of Helicobacter pylori infection.
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