On May 15, 2026 Sensei Biotherapeutics, Inc. (Nasdaq: SNSE) reported financial results for the first quarter ended March 31, 2026, and provided a corporate update.

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"The first quarter of 2026 was transformational for the Company, with the acquisition of Faeth Therapeutics and the concurrent $200 million private placement in February, supported by a group of leading life sciences investors," said Christopher Gerry, President & General Counsel of Sensei Biotherapeutics. "This acquisition and injection of new capital will allow us to advance PIKTOR, a differentiated multi-node pathway inhibitor, through key clinical milestones."

"New data across the industry continues to support the significant potential of multi-node inhibition of the PI3K/AKT/mTOR pathway," said Anand Parikh, Chief Operating Officer of Sensei Biotherapeutics. "We believe PIKTOR is differentiated as an orally administered multi-node therapy specifically targeting PI3K-alpha, mTORC1 and mTORC2, with the potential to treat a variety of solid tumors. With our Phase 2 trial in advanced endometrial cancer expected to read out by the end of the year and the recent initiation of our Phase 1b/2 trial in advanced breast cancer, we are making great strides towards delivering the next generation of solid tumor therapies."

Clinical Program Highlights

Acquired through the Faeth transaction, PIKTOR is now Sensei’s lead program. The investigational, proprietary, all-oral combination of serabelisib and sapanisertib is designed to inhibit multiple nodes of the PI3K/AKT/mTOR pathway through PI3K-alpha and dual mTORC1/2 targeting.

In April 2026, the first patient was dosed in the Phase 1b/2 trial evaluating PIKTOR for the treatment of HR+/HER2- advanced breast cancer (Study FTH-PIK-101). Interim data from the trial is expected in 2027.

The Phase 2 trial evaluating PIKTOR in advanced endometrial cancer (Study FTH-PIK-201) is on track to report topline data in the second half of 2026.
First Quarter 2026 Financial Results

Cash Position: Cash, cash equivalents and marketable securities were $202.8 million as of March 31, 2026, as compared to $21.2 million as of December 31, 2025.

Research and Development (R&D) Expenses: R&D expenses were $18.0 million for the quarter ended March 31, 2026, compared with $3.7 million for the quarter ended March 31, 2025. The increase in R&D expenses was primarily attributable to the inclusion of Faeth R&D operations as well as one-time costs associated with the Faeth acquisition, partially offset by a reduction in the SNS-101 clinical trial costs.

General and Administrative (G&A) Expenses: G&A expenses were $19.7 million for the quarter ended March 31, 2026, compared to $3.5 million for the quarter ended March 31, 2025. The increase in G&A expense was primarily attributable to one-time costs associated with the Faeth acquisition.

Acquired In-Process Research and Development (Acquired IPR&D) Expenses: Acquired IPR&D expenses were $133.0 million for the quarter ended March 31, 2026. This represents the fair value of IPR&D assets obtained in connection with asset acquisition where the acquired IPR&D has no alternative future use as of the acquisition date.

Net Loss: Net loss was $170.2 million, or $131.45 per basic and diluted share, for the quarter ended March 31, 2026, compared with a net loss of $6.9 million, or $5.45 per basic and diluted share, for the quarter ended March 31, 2025.

Weighted-average common shares outstanding, basic and diluted, were 1,295,052 for the quarter ended March 31, 2026, compared with 1,259,531 for the quarter ended March 31, 2025.

Condensed Statements of Operations

(Unaudited, in thousands except share and per share data)

For the Three Months
Ended March 31,

2026

2025

Operating expenses:

Research and development

$

17,957

$

3,725

General and administrative

19,713

3,549

Acquired in-process research and development

132,957

—

Total operating expenses

170,627

7,274

Loss from operations

(170,627

)

(7,274

)

Total other income

391

410

Net loss

(170,236

)

(6,864

)

Net loss per share, basic and diluted

$

(131.45

)

$

(5.45

)

Weighted-average common shares outstanding, basic and diluted

1,295,052

1,259,531

Selected Condensed Balance Sheet Data

(Unaudited, in thousands)

March 31,
2026

December 31,
2025

Cash and cash equivalents

$

152,325

$

8,668

Marketable securities

50,468

12,516

Total assets

205,381

22,902

Total liabilities

14,191

4,310

Series B redeemable convertible preferred stock

328,476

—

Total stockholders’ (deficit) equity

(137,286

)

18,592

(Press release, Sensei Biotherapeutics, MAY 15, 2026, View Source [SID1234665779])