Heartflow, Inc. Leases Disclosure
The Company leases office space in Mountain View, Santa Rosa, San Francisco, and Rohnert Park, California, Austin, Texas, and Tokyo, Japan.
Mountain View, California
In August 2021, the Company entered into a facility lease agreement for approximately 61,000 rentable square feet in Mountain View, California through August 2030. The Company received a tenant improvement allowance of $1.8 million, in which the remaining unused amount of $1.4 million was credited against rent expense during the year ended December 31, 2023. In connection with the lease, the Company established a standby letter of credit for the benefit of the landlord in the amount of $4.3 million in August 2021, which is classified as non-current restricted cash on the consolidated balance sheets as of December 31, 2025 and 2024. Refer to Note 18 for additional information.
Santa Rosa, California
In October 2024, the Company entered into an agreement to sublease approximately 4,000 rentable square feet of office space in Santa Rosa, California for 29 months through March 2027. In connection with this sublease, the Company paid a security deposit of $8,000 and recorded an ROU asset and lease liability of $169,000.
San Francisco, California
In July 2025, the Company entered into an agreement to sublease approximately 8,100 rentable square feet of office space in San Francisco, California for 39 months through January 2029. In connection with this sublease, the Company paid a security deposit of $90,000 and recorded an ROU asset and lease liability of $1,254,000.
Rohnert Park, California
On December 15, 2025, the Company entered into a facility lease agreement for approximately 13,100 rentable square feet of office space in Rohnert Park, California for 63 months from the lease commencement date, with the option to extend for one additional period. In connection with the lease, the Company paid a security deposit of $39,000. The average monthly lease payments are approximately $32,000 per month during the lease term and provides for a tenant improvement allowance of $173,000. The lease is expected to commence in the first quarter of 2026.
Austin, Texas
In January 2023, the Company amended its facility lease agreement in Austin, Texas, which provided for approximately 26,000 square feet of space, to extend the original lease term which expired in November 2023 with a renewal option to December 2025 with no renewal option. In September 2025, the Company amended the lease for its Austin, Texas facility to extend the lease term an additional 12 months through December 2026 and recorded an ROU asset and lease liability of $561,000 in connection with the lease extension. A security deposit of
$150,000 was recorded as non-current restricted cash as of December 31, 2025 and as current restricted cash as of December 31, 2024, on the consolidated balance sheets related to this lease. Refer to Note 18 for additional information.
Tokyo, Japan
The Company had one non-cancellable operating lease for its facility in Tokyo, Japan which was set to expire in November 2024. In April 2024, the Company entered into an agreement to extend the lease for an additional three years through November 2027. In connection with the amended lease agreement, the Company recorded an ROU asset and lease liability of $420,000.
Operating lease cost consisted of the following (in thousands):
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| Year Ended December 31, | |||||||
| 2025 |
| 2024 |
| 2023 | |||
Operating lease cost | $ | 5,122 |
| $ | 4,900 |
| $ | 4,906 |
Variable lease cost |
| 1,375 |
|
| 1,597 |
|
| 1,120 |
Total lease cost | $ | 6,497 |
| $ | 6,497 |
| $ | 6,026 |
Cash paid for amounts included in the measurement of operating lease liabilities during the years ended December 31, 2025, 2024 and 2023 was $5.7 million, $5.2 million and $4.1 million, respectively.
The following table summarizes the maturities of the aggregate lease payments under the Company’s operating lease liabilities as of December 31, 2025 (in thousands):
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Year Ending December 31: |
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| Amount | |
2026 |
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| $ | 6,178 |
2027 |
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| 5,658 |
2028 |
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| 5,649 |
2029 |
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| 5,352 |
2030 |
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| 3,646 |
Total minimum lease payments |
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| 26,483 |
Less: Amount of lease payments representing interest |
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| 4,429 |
Present value of future minimum lease payments |
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| $ | 22,054 |
Less: Current lease liabilities |
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| 5,922 |
Long-term lease liabilities |
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| $ | 16,132 |
The following table summarizes additional information related to the Company’s operating leases (in thousands, except weighted-average data):
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| December 31, | ||||
| 2025 |
| 2024 | ||
Right-of-use asset | $ | 17,488 |
| $ | 18,805 |
Weighted average remaining lease term (years) |
| 4.3 |
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| 5.5 |
Weighted average discount rate (percent) |
| 8.6% |
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| 9.0% |
About Leases Disclosures
Lease disclosures under ASC 842 provide a comprehensive view of a company's leased asset portfolio, including the split between operating and finance leases, discount rates used to present-value future payments, and the maturity schedule of lease obligations. This section reveals a significant source of off-balance-sheet commitments that were largely hidden before the current standard.
Key signals: the weighted-average discount rate affects the size of recorded lease liabilities — a higher rate reduces the reported obligation, so compare the chosen rate against the company's incremental borrowing rate. The operating versus finance lease mix affects both EBITDA and operating income presentation. Watch the maturity table for concentration risk: large payment cliffs in specific years may create cash flow pressure. Variable lease payments excluded from the liability measurement represent real obligations that do not appear on the balance sheet. Compare total lease costs against prior-year operating lease expense to assess the true economic burden.