# EDGAR Filing Document

**Accession Number:** 0001783183
**File Stem:** 0001193125-26-006266
**Filing Date:** 2026-1
**Character Count:** 15064
**Document Hash:** 09c71ae9bb96190ec73cede58fc362eb
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-006266.hdr.sgml**: 20260107

**ACCESSION NUMBER**: 0001193125-26-006266

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 13

**CONFORMED PERIOD OF REPORT**: 20260107

**ITEM INFORMATION**: Results of Operations and Financial Condition

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20260107

**DATE AS OF CHANGE**: 20260107

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Phathom Pharmaceuticals, Inc.
- **CENTRAL INDEX KEY:** 0001783183
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 824151574
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-39094
- **FILM NUMBER:** 26515649

**BUSINESS ADDRESS:**
- **STREET 1:** 100 CAMPUS DRIVE,
- **STREET 2:** SUITE 102
- **CITY:** FLORHAM PARK
- **STATE:** NJ
- **ZIP:** 07932
- **BUSINESS PHONE:** (877) 742-8466

**MAIL ADDRESS:**
- **STREET 1:** 100 CAMPUS DRIVE,
- **STREET 2:** SUITE 102
- **CITY:** FLORHAM PARK
- **STATE:** NJ
- **ZIP:** 07932

?xml version='1.0' encoding='ASCII'? 8-K

### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549

### FORM 8-K

#### CURRENT REPORT

#### Pursuant to Section 13 or 15(d)

#### of the Securities Exchange Act of 1934

#### Date of report (Date of earliest event reported): January 7, 2026

## PHATHOM PHARMACEUTICALS, INC.

#### (Exact name of registrant as specified in its charter)

---

| | | |
|:---|:---|:---|
| **Delaware** | **001-39094** | **82-4151574** |
| **(State or other jurisdiction of**<br> **incorporation or organization)** | **(Commission**<br> **File Number)** | **(I.R.S. Employer<br>Identification No.)** |

---

#### 100 Campus Drive, Suite 102

#### Florham Park, New Jersey 07932

#### (Address of principal executive offices) (Zip Code)
(877) 742-8466

#### (Registrant's telephone number, include area code)

#### N/A

#### (Former Name or Former Address, if Changed Since Last Report)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the Act:

---

| | | |
|:---|:---|:---|
| **Title of each class** | **Trading<br>Symbol(s)** | **Name of each exchange**<br> **on which registered** |
| Common Stock, par value $0.0001 per share | PHAT | The Nasdaq Global Select Market |

---

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

------

---

| | |
|:---|:---|
| **Item 2.02** | **Results of Operations and Financial Condition.**  |

---

On January 7, 2026, Phathom Pharmaceuticals, Inc. issued a press release announcing certain preliminary unaudited financial results for the fourth quarter and full year ended December 31, 2025. A copy of the press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Pursuant to the rules and regulations of the SEC, the information provided in this Item 2.02 of this Form 8-K shall be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and shall be deemed to be incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, unless otherwise expressly set forth by specific reference in such a filing.

---

| | |
|:---|:---|
| **Item 9.01.** | **Financial Statements and Exhibits.**  |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) Exhibits

---

| | |
|:---|:---|
| **Exhibit**<br>**No.** | **Description** |
| 99.1 | [Press Release issued on January 7, 2026](d52798dex991.htm) |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document) |

---

------

#### SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

---

| | | |
|:---|:---|:---|
|  | PHATHOM PHARMACEUTICALS, INC. | PHATHOM PHARMACEUTICALS, INC. |
| Date: January 7, 2026 | By: | /s/ Anne Marie Cook |
|  |  | Anne Marie Cook |
|  |  | Chief Legal Officer |

---

## Exhibit 99.1

**Exhibit 99.1** 

**Phathom Pharmaceuticals Announces Preliminary Fourth Quarter and Full Year 2025 Financial Results** 

FLORHAM PARK, N.J., January 7, 2026 – Phathom Pharmaceuticals, Inc. (Nasdaq: PHAT), a biopharmaceutical company focused on developing and commercializing novel treatments for gastrointestinal (GI) diseases, today announced certain preliminary unaudited financial results for the fourth quarter and full year ended December 31, 2025.

**Preliminary Fourth Quarter 2025 Financial Results** 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• For the three months ended December 31, 2025, Phathom expects to report:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Net revenues of approximately $57 million to $58 million

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• GAAP operating expenses of approximately $59 million to $61 million

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Non-GAAP operating expenses of approximately $51 million to
$53 million, which excludes approximately $8 million of stock-based compensation

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Fourth quarter 2025 net cash usage of approximately $6 million

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Cash and cash equivalents of approximately $130 million as of December 31, 2025

**Preliminary Full Year 2025 Financial Results** 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• For the full year 2025, Phathom expects to report:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Net revenues of approximately $174.5 million to $175.5 million

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• GAAP operating expenses of approximately $315.5 million to $317.5 million

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Non-GAAP operating expenses of approximately $284.5 million to
$286.5 million, which excludes approximately $31 million of stock-based compensation

**VOQUEZNA<sup>®</sup> 1 Million Prescription Milestone** 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• During the fourth quarter 2025, Phathom surpassed one million prescriptions dispensed for VOQUEZNA products in
the United States since launch

**Path to Operating Profitability in H2 2026** 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Operating profitability anticipated in the second half of 2026, excluding stock-based compensation

**Preliminary Financial Information** 

The preliminary financial results included in this press release are based on management's initial analysis of operations for the fourth quarter and year ended December 31, 2025, and are subject to completion of Phathom's financial closing procedures and audit. Actual results may differ materially from these preliminary estimates. Phathom's independent registered public accounting firm has not audited, reviewed, examined, compiled, nor applied agreed-upon procedures with respect to the preliminary financial data.

------

**Non-GAAP Financial Measures** 

This press release includes financial results prepared in accordance with accounting principles generally accepted in the United States (GAAP) and also certain non-GAAP financial measures. In particular, we have provided non-GAAP operating expenses, adjusted to exclude stock-based compensation, which is substantially dependent on changes in the market price of our common stock. Non-GAAP financial measures are not an alternative for financial measures prepared in accordance with GAAP. However, we believe the presentation of non-GAAP operating expenses, when viewed in conjunction with GAAP results, provides investors with a more meaningful understanding of ongoing operating performance. In addition, this non-GAAP financial measure is among those indicators we use as a basis for evaluating performance, and planning and forecasting future periods. This non-GAAP financial measure is not intended to be considered in isolation or as a substitute for its most directly comparable GAAP financial measure. The difference between GAAP and non-GAAP operating expenses is included in the results presented above.

**<u>About VOQUEZNA</u>**<sup>®</sup>

VOQUEZNA<sup>®</sup> tablets contain vonoprazan, an oral small molecule potassium-competitive acid blocker (PCAB). PCABs are a novel class of medicines that block acid secretion in the stomach. VOQUEZNA is approved in the U.S. for the treatment of adults with Erosive Esophagitis, also known as Erosive GERD, the relief of heartburn associated with Erosive GERD, the relief of heartburn associated with Non-Erosive GERD, and for the treatment of *H. pylori* infection in combination with either amoxicillin or amoxicillin and clarithromycin. Phathom in-licensed the rights to vonoprazan for the U.S., Europe and Canada from Takeda, which markets the product in Japan and numerous other countries in Asia and Latin America.

**<u>About Phathom Pharmaceuticals, Inc.</u>**

Phathom Pharmaceuticals is a biopharmaceutical company focused on the development and commercialization of novel treatments for gastrointestinal diseases. Phathom has in-licensed the exclusive rights to vonoprazan, a first-in-class potassium-competitive acid blocker (PCAB), for the U.S., Europe and Canada. Phathom currently markets vonoprazan in the United States as VOQUEZNA<sup>®</sup> (vonoprazan) tablets for the relief of heartburn associated with Non-Erosive GERD in adults, the healing and maintenance of healing of Erosive GERD in adults and relief of associated heartburn, and as part of VOQUEZNA<sup>®</sup> TRIPLE PAK<sup>®</sup> (vonoprazan tablets, amoxicillin capsules, clarithromycin tablets) and VOQUEZNA<sup>®</sup> DUAL PAK<sup>®</sup> (vonoprazan tablets, amoxicillin capsules) for the treatment of *H. pylori* infection in adults. For more information about Phathom, visit the company's website at <u>www.phathompharma.com</u> and follow on <u>LinkedIn</u> and <u>X</u>.

**<u>Forward-Looking Statements</u>**

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including statements regarding our expectations as to fourth quarter and full-year 2025 financial results and operating profitability, excluding stock-based compensation, in the second half of 2026. These statements involve known and unknown risks, uncertainties and other important factors that may cause our actual results, performance or achievements to differ materially from those expressed or implied by the forward-looking statements, including the risk that: our actual results for the fourth quarter or full year 2025 may differ materially from our preliminary estimates as a result of changes to assumptions and estimates, the completion of review of internal controls over financial reporting or other quarter-end and year-end

------

procedures, the availability of additional information, audit adjustments, post-closing or subsequent-event evaluations or for other reasons; we may not achieve results, revenues or growth from commercialization of VOQUEZNA at the levels to enable us to meet our expectations as to operating profitability; the market opportunity for VOQUEZNA may be significantly smaller than our expectations; market acceptance for VOQUEZNA from healthcare professionals, patients, and payors may be significantly lower than we anticipate; we may encounter coverage, reimbursement, market access, or other issues in the course of our commercialization efforts that may negatively impact our efforts and results; the unmet need for new treatment options in GERD may not be as high as we anticipate; our estimates of potential market size may not be accurate; our decisions as to where to allocate our resources and focus our efforts may not lead to the results we expect; we may be negatively impacted by regulatory developments or other governmental actions in the United States, including government healthcare reform; we may encounter unexpected adverse side effects or inadequate efficacy of VOQUEZNA that may limit or impair market acceptance; our operating expenses may be higher than we anticipate which could negatively impact our expectations as to operating profitability, including if we decide to engage in activities not currently in our plan or if we face unexpected, or higher than anticipated, expenses, including as the result of unexpected events such as litigation; depending on our results and activities, we may not achieve profitability on the timelines we expect or at all. For additional discussion of these and other risks related to our business, see the risk disclosures in our filings with the Securities and Exchange Commission (SEC), including our Annual Report on Form 10-K and any subsequent filings with the SEC. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof, and we undertake no obligation to revise or update these statements to reflect events or circumstances after the date hereof. All forward-looking statements are qualified in their entirety by this cautionary statement made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995.

**MEDIA CONTACT** 

Nick Benedetto

1-877-742-8466

<u>media@phathompharma.com</u>

**INVESTOR CONTACT** 

Eric Sciorilli

1-877-742-8466

<u>ir@phathompharma.com</u>

<sup>©</sup> 2026 Phathom Pharmaceuticals. All rights reserved.

VOQUEZNA, VOQUEZNA DUAL PAK, VOQUEZNA TRIPLE PAK, Phathom Pharmaceuticals, and their respective logos are registered trademarks of Phathom Pharmaceuticals, Inc.