Ironclad
Ironclad is contract lifecycle management software for creating, negotiating and analyzing contracts with AI.
Ironclad vs SirionLabs
At a Glance
| Detail | Ironclad | SirionLabs |
|---|---|---|
| Category | CLM | CLM |
| Total raised | $331M | $166M |
| Rounds tracked | 5 | 4 |
| Latest round | Series E, $150M · Jan 2022 | Series D extension, $25M · Jan 2023 |
| Last valuation | $3.2B | Not disclosed |
| Lead investors | Franklin Templeton, BOND, Y Combinator Continuity, Accel | Brookfield Growth, Partners Group, Tiger Global Management, Avatar Growth Capital |
| Built for | In-house teams, Mid-size firms | Not disclosed |
| Headquarters | United States | United States |
Funding, Side by Side
Ironclad rounds
- Jan 2022Series E$150M
- Jan 2021Series D$100M
- Sep 2019Series C$50M
- Jan 2019Series B$23M
- Aug 2017Series A$8M
SirionLabs rounds
- Jan 2023Series D extension$25M
- May 2022Series D$85M
- May 2020Series C$44M
- Jul 2016Series B$12.3M
Backed by both: Sequoia Capital.
Our Take
We have not tested these two head to head yet. The numbers above come from public funding announcements. If you use either one, tell us what you found and it may become a Field Note.
Quick Answers
- Which has raised more, Ironclad or SirionLabs?
- Ironclad has raised $331M in disclosed funding, compared with $166M for SirionLabs.
- Do Ironclad and SirionLabs share investors?
- Yes. Sequoia Capital backed both.
- What is Ironclad best for?
- Ironclad is contract lifecycle management software for creating, negotiating and analyzing contracts with AI.
- What is SirionLabs best for?
- AI contract lifecycle management.
Source: Legal Tech Circle funding data, from public announcements. Updated November 11, 2026.