Funding round
Sierra Growth
Reported as "Growth Equity"
Sierra, which works in AI customer experience solutions development in San Francisco, raised $350M in a Growth round announced on 4 Sep 2025, led by Greenoaks, at a $10.00B post-money valuation. 3 firms took part, 1 of them already investors. It is Sierra's second venture round on record; the one before was a Growth in Oct 2024.
$350M
Amount raised
$10.00B
Post-money valuation
$9.65B pre-money
3
Investors
1 lead
2.2x
Step-up from the Growth
$4.50B in Oct 2024
3.5%
Stake sold
new money over the post-money
Valuation
What this round says about the price
This round priced Sierra at $10.00B after the new money, 2.2 times the $4.50B of its Growth (Oct 2024). The $350M bought investors about 3.5% of the company. It came 11 months after Sierra's Growth. It is 24% of the $1.48B Sierra has raised in the venture rounds on record. Sierra raised again 8 months later: a Growth round of $950M in May 2026, at $15.80B post-money.
Investors
Who put money in
Greenoaks led the round with 2 other firms. Greenoaks had backed Sierra before.
Lead investor
- Greenoaks backs 77 venture-backed companies existing investor
Also in the round
- Sequoia Capital backs 589 venture-backed companies new investor
- Benchmark new investor
Use of proceeds
What the money is for
According to the announcement, the money goes to product development, geographic expansion, sales and marketing, scaling operations and working capital.
- Product development
- Geographic expansion
- Sales and marketing
- Scaling operations
- Working capital
Comparable rounds
How it compares
27 Growth rounds in Software Development Services within a year either side disclosed an amount; the median was $63M, and this round was 5.6 times the median. The closest in time, other companies' Growth rounds in Software Development Services:
| Company | Announced | Amount | Post-money | Led by |
|---|---|---|---|---|
| Software Development Services | 16 Sep 2025 | $100M | $2.00B | Vanara Capital |
| Software Development Services | 9 Sep 2025 | $15M | not disclosed | not named |
| Software Development Services | 21 Oct 2025 | $45M | not disclosed | Healthier Capital |
| Software Development Services | 2 Oct 2025 | $35M | not disclosed | not named |
| Software Development Services | 1 Oct 2025 | $15M | not disclosed | Trinity Capital |
| Software Development Services | 24 Jul 2025 | $125M | not disclosed | PSG |
| Gupshup Software Development Services | 23 Jul 2025 | $60M | not disclosed | Globespan Capital Partners |
| Software Development Services | 16 Dec 2025 | $63M | not disclosed | Invictus Growth Partners |
Sources
Where this comes from
Reported by 5 sources.
Questions
Frequently asked
How much did Sierra raise in its Growth round?
Sierra raised $350M in its Growth round, announced in Sep 2025.
Who led Sierra's Growth round?
Greenoaks led it, with Sequoia Capital and Benchmark.
What was Sierra's valuation at the Growth round?
$10.00B post-money ($9.65B pre-money).
How does it compare with other Growth rounds in Software Development Services?
27 Growth rounds in Software Development Services within a year either side disclosed an amount; the median was $63M, and this round was 5.6 times the median.
Did Sierra raise again after this round?
Yes: a Growth round in May 2026 of $950M at $15.80B post-money.