# EDGAR Filing Document

**Accession Number:** 0001680367
**File Stem:** 0001628280-26-031643
**Filing Date:** 2026-5
**Character Count:** 18848
**Document Hash:** 3447b34a5f34d36f6e226291af579752
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001628280-26-031643.hdr.sgml**: 20260507

**ACCESSION NUMBER**: 0001628280-26-031643

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 12

**CONFORMED PERIOD OF REPORT**: 20260507

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

**FILED AS OF DATE**: 20260507

**DATE AS OF CHANGE**: 20260507

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Shattuck Labs, Inc.
- **CENTRAL INDEX KEY:** 0001680367
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 812575858
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-39593
- **FILM NUMBER:** 26950696

**BUSINESS ADDRESS:**
- **STREET 1:** 500 W. 5TH STREET
- **CITY:** AUSTIN
- **STATE:** TX
- **ZIP:** 78701
- **BUSINESS PHONE:** 512-900-4690

**MAIL ADDRESS:**
- **STREET 1:** 500 W. 5TH STREET
- **CITY:** AUSTIN
- **STATE:** TX
- **ZIP:** 78701

?xml version='1.0' encoding='ASCII'? sttk-20260507

**UNITED STATES** 

**SECURITIES AND EXCHANGE COMMISSION** 

**WASHINGTON, DC 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): May 7, 2026**

**Shattuck Labs, Inc.** 

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

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| | | |
|:---|:---|:---|
| **Delaware** | **001-39593** | **81-2575858** |
| **(State or other jurisdiction of<br>incorporation or organization)** | **(Commission File Number)** | **(I.R.S. Employer<br>Identification Number)** |

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**500 W. 5th Street, Suite 1200** 

**Austin, TX 78701** 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(Address of principal executive offices including zip code)**

**(512) 900-4690** 

**(Registrant's telephone number, including area code)**<br>

**Not Applicable**

**(Former name or former address, if changed since last report)**

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| | |
|:---|:---|
| 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: | 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)) |

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**Securities registered pursuance to Section 12(b) of the Act:**

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

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| | |
|:---|:---|
| 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 | ☐ |

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**Item 2.02 Results of Operations and Financial Condition.**

On May 7, 2026, Shattuck Labs, Inc. issued a press release announcing its financial results for the quarter ended March 31, 2026. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K.

*As provided in General Instruction B.2 of Form 8-K, the information in this Item 2.02 and Exhibit 99.1 incorporated herein shall not be deemed to be "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act") or otherwise subject to the liabilities of that section, nor shall such information or Exhibit 99.1 be deemed to be incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.*

**Item 9.01 Financial Statements and Exhibits.**

Exhibits

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| | |
|:---|:---|
| **Exhibit<br>Number** | **Description of Exhibit** |
| 99.1 | <u>[Press release issued by Shattuck Labs, Inc. regarding its financial results for the quarter ended March 31, 2026, dated May 7, 2026](sttk_q12026earningspr.htm)</u> |
| 104 | The cover page from the Company's Current Report on Form 8-K formatted in Inline XBRL. |

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**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.

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| | | |
|:---|:---|:---|
| | **Shattuck Labs, Inc.** | **Shattuck Labs, Inc.** |
| Date: May 7, 2026 | By: | /s/ Dr. Taylor Schreiber |
|  |  | Dr. Taylor Schreiber<br>*Chief Executive Officer*<br>*(principal executive officer)* |

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## Exhibit 99.1

**Shattuck Labs Reports First Quarter 2026 Financial Results and Recent Business Highlights**

• *Phase 1 clinical trial of SL-325 enrollment complete; data expected in the second quarter of 2026 –*

• *Phase 2 clinical trial of SL-325 in patients with Crohn's disease expected to initiate in the third quarter of 2026 –*

**AUSTIN, TX and DURHAM, NC, May 7, 2026** – Shattuck Labs, Inc. (Shattuck or the Company) (NASDAQ: STTK), a clinical-stage biotechnology company pioneering the development of potential first-in-class monoclonal and bispecific DR3 blocking antibodies for the treatment of patients with inflammatory and immune-mediated diseases, today reported financial results for the first quarter ended March 31, 2026 and provided recent business highlights.

"We are pleased to have completed enrollment in our Phase 1 clinical trial of SL-325, and are looking forward to sharing a comprehensive data set on all single ascending dose and multiple ascending dose cohorts from this study in the second quarter of 2026, including safety and tolerability, pharmacokinetics, receptor occupancy, duration of receptor occupancy, pharmacodynamics, and immunogenicity data," said Taylor Schreiber, M.D., Ph.D., Chief Executive Officer of Shattuck.

**DR3 Program Development in 2026**

**Shattuck's lead product candidate, SL-325, is a potentially first-in-class and best-in-mechanism DR3 blocking antibody for the treatment of Crohn's disease, ulcerative colitis, and other inflammatory and immune-mediated diseases.** Recent updates and anticipated upcoming milestones for SL-325, and Shattuck's other DR3 blocking antibodies, include:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• The Phase 1 trial evaluating the safety, tolerability, immunogenicity, and pharmacokinetics (PK) of SL-325 in healthy volunteers is ongoing and will determine the recommended Phase 2 dose and dosing schedule.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Enrollment of all six single-ascending dose cohorts and all three multiple-ascending dose cohorts of the trial is now complete, with participant follow-up, data collection, and data analysis ongoing.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Shattuck plans to present safety and tolerability, PK, receptor occupancy, duration of receptor occupancy, pharmacodynamics, and immunogenicity data from this trial in the second quarter of 2026.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Subject to positive Phase 1 data and regulatory alignment, Shattuck expects to initiate a Phase 2 clinical trial of SL-325 in patients with Crohn's disease in the third quarter of 2026.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Shattuck continues to develop multiple DR3-based bispecific antibodies. Shattuck's lead bispecific antibody has entered IND-enabling activities.** This bispecific antibody was designed to inhibit both the DR3/TL1A axis and another biologically relevant target for the treatment of patients with inflammatory and immune-mediated diseases. Shattuck plans to disclose the targets of its lead bispecific product candidate, supporting preclinical data, and expected development timelines in the second quarter of 2026.

**Upcoming Events**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Shattuck plans to participate in the following upcoming event(s). Details will be included on the Events & Presentations section of the Company's website.**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Leerink Partners Therapeutics Forum 2026 (Boston, MA), July 14-15, 2026. Management will participate in one-on-one meetings.

**First Quarter 2026 Financial Results**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Cash and Cash Equivalents and Investments:** As of March 31, 2026, cash and cash equivalents and short-term investments were $90.4 million, as compared to $60.9 million as of March 31, 2025.

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Research and Development (R&D) Expenses:** R&D expenses were $10.9 million for the quarter ended March 31, 2026, as compared to $9.9 million for the quarter ended March 31, 2025.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **General and Administrative (G&A) Expenses:** G&A expenses were $4.6 million for the quarter ended March 31, 2026, as compared to $4.5 million for the quarter ended March 31, 2025.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• **Net Loss:** Net loss was $14.8 million for the quarter ended March 31, 2026, or $0.13 per basic and diluted share, as compared to a net loss of $13.7 million for the quarter ended March 31, 2025, or $0.27 per basic and diluted share.

**Financial Guidance**

As of March 31, 2026, cash and cash equivalents were approximately $90.4 million. Shattuck's current cash and cash equivalents, assuming the full exercise of the outstanding common stock warrants, are expected to fund operations into 2029. This cash runway guidance is based on the Company's current operational plans and excludes any additional capital that may be received (other than from the exercise of the common stock warrants), proceeds from business development transactions, and/or additional costs associated with clinical development activities that may be undertaken.

**About SL-325**

SL-325 is a potential first-in-class Death Receptor 3 (DR3) blocking antibody designed to achieve a complete and durable blockade of the clinically validated DR3/TL1A pathway. Shattuck's preclinical studies demonstrate high affinity binding and superior activity over TL1A antibodies, and offer a data-driven rationale for targeting the TNF receptor, DR3, versus its ligand, TL1A. SL-325 is a fully Fc-silenced, humanized immunoglobulin G monoclonal antibody with a favorable safety profile in non-human primates, currently being evaluated in a Phase 1 clinical trial.

**About Shattuck Labs, Inc.**

Shattuck Labs, Inc. is a clinical-stage biotechnology company pioneering the development of potentially first-in-class monoclonal and bispecific DR3 blocking antibodies for the treatment of patients with inflammatory and immune-mediated diseases. Shattuck's expertise in protein engineering and the development of novel TNF receptor therapeutics come together in its lead program, SL-325, a potentially first-in-class DR3 antagonist antibody designed to achieve a more complete blockade of the clinically validated DR3/TL1A pathway. The Company has offices in both Austin, Texas and Durham, North Carolina. For more information, please visit: www.ShattuckLabs.com.

**Forward-Looking Statements**

Certain statements in this press release may constitute "forward-looking statements" within the meaning of the federal securities laws, including, but not limited to, Shattuck's expectations regarding: plans for its preclinical studies, clinical trials and research and development programs, particularly with respect to SL-325; the anticipated timing of release of data from the Company's ongoing Phase 1 clinical trial of SL-325; the anticipated timing of initiation of a Phase 2 clinical trial of SL-325 in patients with Crohn's disease; the clinical benefit, safety and tolerability of SL-325; anticipated development of additional preclinical pipeline candidates; the timing of nomination, release of preclinical data and development timelines of a lead bispecific antibody candidate; and expectations regarding the time period over which the Company's capital resources will be sufficient to fund its anticipated operations. Words such as "may," "might," "will," "objective," "intend," "should," "could," "can," "would," "expect," "believe," "design," "estimate," "predict," "potential," "develop," "plan" or the negative of these terms, and similar expressions, or statements regarding intent, belief, or current expectations, are forward-looking statements. While the Company believes these forward-looking statements are reasonable, undue reliance should not be placed on any such forward-looking statements, which are based on information available to it on the date of this release. These forward-looking statements are based upon current estimates and assumptions and are subject to various risks and uncertainties (including, without limitation, those set forth in Shattuck's filings with the U.S. Securities and Exchange Commission (SEC)), many of which are beyond its control and subject to change. Actual results could be materially different. Risks and uncertainties include: global macroeconomic conditions and related volatility; expectations regarding the initiation, progress, and expected results of the Company's preclinical studies, clinical trials and research and development programs; expectations regarding the timing, completion and outcome of the Company's preclinical studies and clinical trials; the unpredictable relationship between preclinical study

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results and clinical study results; the timing or likelihood of regulatory filings and approvals; liquidity and capital resources, including the time period over which current capital resources are expected to the fund the Company's operations; and other risks and uncertainties identified in Shattuck's Annual Report on Form 10-K for the year ended December 31, 2025, and subsequent disclosure documents filed with the SEC. Shattuck claims the protection of the Safe Harbor contained in the Private Securities Litigation Reform Act of 1995 for forward-looking statements. The Company expressly disclaims any obligation to update or alter any statements whether as a result of new information, future events or otherwise, except as required by law.

The Company intends to use the investor relations portion of its website as a means of disclosing material non-public information and for complying with disclosure obligations under Regulation FD.

**Investor & Media Contact:** 

Andrew Neill

Chief Financial Officer

Shattuck Labs, Inc.

InvestorRelations@shattucklabs.com

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**FINANCIAL INFORMATION**

**SHATTUCK LABS, INC.** 

**CONDENSED BALANCE SHEETS**

**(unaudited)**

**(In thousands)**

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| | | |
|:---|:---|:---|
| | **March 31,<br>2026** | **December 31,<br>2025** |
| **ASSETS** | | |
| Current assets: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Cash and cash equivalents | $90419 | $54192 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Investments |  | 23873 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Prepaid expenses and other current assets | 3334 | 4410 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total current assets | 93753 | 82475 |
| Property and equipment, net | 5353 | 6114 |
| Investment in related party | 1000 | 1000 |
| Other assets | 2015 | 1437 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total assets | $102121 | $91026 |
| **LIABILITIES AND STOCKHOLDERS' EQUITY** |  |  |
| Current Liabilities: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Accounts payable | $1253 | $2101 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Accrued expenses | 2996 | 4951 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total current liabilities | 4249 | 7052 |
| Non-current operating lease liabilities | 2037 | 1584 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total liabilities | 6286 | 8636 |
| Commitments and contingencies (Note 5) |  |  |
| Stockholders' equity: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Common stock | 7 | 7 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Additional paid in capital | 541124 | 512906 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Accumulated other comprehensive income |  | 6 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Accumulated deficit | (445296) | (430529) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total stockholders' equity | 95835 | 82390 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total liabilities and stockholders' equity | $102121 | $91026 |

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**SHATTUCK LABS, INC.**

**CONDENSED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS**

**(Unaudited)**

**(In thousands, except share and per share amounts)**

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| | | |
|:---|:---|:---|
| | **Three Months Ended March 31,** | **Three Months Ended March 31,** |
| | **2026** | **2025** |
| Revenue | $— | $— |
| Operating expenses: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Research and development | 10946 | 9919 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;General and administrative | 4599 | 4470 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Expense from operations | 15545 | 14389 |
| Loss from operations | (15545) | (14389) |
| Other income (expense): |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Interest income | 779 | 689 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Other expense | (1) | (2) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total other income | 778 | 687 |
| Net loss | $(14767) | $(13702) |
| Unrealized loss on investments | (6) | (2) |
| Comprehensive loss | $(14773) | $(13704) |
| Net loss per share – basic and diluted | $(0.13) | $(0.27) |
| Weighted-average shares outstanding – basic and diluted | 112234551 | 50965815 |

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