Annual report [Section 13 and 15(d), not S-K Item 405]

Employee Retirement Plans

v3.25.4
Employee Retirement Plans
 12 Months Ended
Dec. 31, 2025
Retirement Benefits [Abstract]  
Employee Retirement Plans Employee Retirement Plans
Defined Contribution Plan
The Company has a 401(k) defined contribution retirement plan (the 401(k) Plan) covering all eligible employees. Participants may voluntarily contribute on a pre-tax basis an amount not to exceed a maximum contribution amount pursuant to Section 401(k) of the Internal Revenue Code. The Company is not required to contribute, nor has it contributed, to the 401(k) Plan for any of the periods presented.
Pension and Other Defined Benefit Retirement Obligations
The Company maintains certain defined benefit retirement plans, including a pension plan, in foreign jurisdictions. During the year ended December 31, 2023, the Company paid approximately $3.2 million to a third party life insurance and pension provider to fund and administer future benefit payments for substantially all of the employees in one of the Company’s defined benefit retirement plans and recorded a gain on partial settlement of such pension plan of approximately $1.0 million. As of December 31, 2025 and December 31, 2024, the defined benefit obligation was $0.3 million and $0.4 million, respectively. The benefit is based on a formula applied to eligible employee earnings. Net periodic benefit costs were $0.2 million, $0.3 million, and $0.2 million respectively for the years ended December 31, 2025, 2024, and 2023 respectively, and were recorded to research and development expenses in the consolidated statements of operations.
Benefit Obligation and Plan Assets for Pension Benefit Plans
The vested benefit obligation for a defined-benefit pension or other retirement plan is the actuarial present value of the vested benefits to which the employee is currently entitled based on the employee’s expected date of separation or retirement.
December 31, 2025 December 31, 2024
(in thousands)
Changes in projected benefit obligation:
Projected benefit obligation, beginning of period $ 430  $ 1,383 
Interest cost 15  16 
Actuarial (gain) loss (123) 29 
Benefits paid and settlements (111) (951)
Contributions to plan 566  — 
Currency exchange rate changes 70  (47)
Projected benefit obligation, end of period 847  430 
Changes in fair value of plan assets:
Fair value of plan assets, beginning of period —  — 
Benefits paid and settlements (56) — 
Employer contributions 566  — 
Actuarial (gain) loss 3  — 
Currency exchange rate changes 19  — 
Fair value of plan assets, end of period 532  — 
Net unfunded status $ 315  $ 430 
Amounts recognized in the consolidated balance sheets:
Other long-term liabilities $ 315  $ 430 
Accumulated other comprehensive (income) loss, before tax $ 1,357  $ 1,266 
Changes in actuarial gains and losses in the projected benefit obligation are primarily driven by discount rate movement. The Company uses the corridor approach to amortize actuarial gains and losses. Under this approach, net actuarial gains or losses in excess of 10% of the larger of the projected benefit obligation or the fair value of plan assets are amortized on a straight-line basis.
As of December 31, 2025 and December 31, 2024, all plans had accumulated benefit obligations and projected benefit obligations in excess of plan assets. As of December 31, 2025 and December 31, 2024, the accumulated benefit obligations were $0.8 million and $0.4 million for the pension plans.
December 31, 2025 December 31, 2024
(in thousands)
Plans with accumulated benefit obligation in excess of plan assets:
Accumulated benefit obligation $ 847  $ 430 
Plan assets $ 532  $ — 
Plans with projected benefit obligation in excess of plan assets:
Projected benefit obligation $ 315  $ 430 
Plan assets $ 532  $ — 
Assumptions for Pension Benefit Plans
December 31, 2025 December 31, 2024
Weighted average actuarial assumptions used to determine benefit obligations:
Discount rate
3.9%
3.3%
Rate of compensation increase
3.8%
3.8%
Weighted average actuarial assumptions used to determine costs:
Discount rate
3.9%
3.3%
Expected long-term rate of return on plan assets —  % —  %
Rate of compensation increase
3.8%
3.8%
The Company establishes the discount rate for each pension plan by analyzing current market long-term bond rates and matching the bond maturity with the average duration of the pension liabilities. The Company establishes the long-term expected rate of return by developing a forward-looking, long-term return assumption for each pension fund asset class, taking into account factors such as the expected real return for the specific asset class and inflation. A single, long-term rate of return is then calculated as the weighted average of the target asset allocation percentages and the long-term return assumption for each asset class.
Pension Plan Assets
The plan assets were $0.5 million as of December 31, 2025. Plan assets are held with a third party life insurance and pension provider that is funding and administering future benefit payments for substantially all of the employees in the plan. Prior to the transfer, pension assets were held in liquid cash and cash equivalents. The plan’s assets are classified as Level 1 within the fair value hierarchy.
Estimated Future Benefit Payments for Pension Benefit Plans
At December 31, 2025, the estimated benefit payments over the next five years and beyond are as follows:
Estimated Future Benefit Payments
(in thousands)
2026 $ 75 
2027 75 
2028 75 
2029 60 
2030 60 
Thereafter 120 
$ 466