Sigma Prime Associates

Rounds

1. Language IO, Inc.$1.5MUnannounced · 15 days1 Sep 2026 · Cheyenne, WY · Technology
2. BluStream Corp$1.35MUnannounced · 56 days22 Jul 2026 · Worcester, MA · Telecommunications
3. Elemental Machines, Inc.$5.7MUnannounced · 110 days29 May 2026 · Cambridge, MA · Technology
4. Language IO, Inc.$1.5MUnannounced · 245 days14 Jan 2026 · Cheyenne, WY · Technology
5. Sotero, Inc.$616KUnannounced · 477 days27 May 2025 · Burlington, MA · Technology
6. Sotero, Inc.$421KFiled before 202525 Sep 2024 · Burlington, MA · Technology
7. Language IO, Inc.$5MFiled before 20259 Aug 2024 · Cheyenne, WY · Technology
8. Allure Security Technology, Inc.$8.95MFiled before 202512 Apr 2024 · Wellesley, MA · Technology
9. ClearGov Inc.$4MFiled before 202518 Mar 2024 · Maynard, MA · Business services
10. CallMiner, Inc.$10MFiled before 202515 Dec 2023 · Waltham, MA · Technology
11. Hopara, Inc.$842KFiled before 20257 Nov 2023 · Boston, MA · Technology
12. aPriori Technologies Inc$28MFiled before 202516 Oct 2023 · Concord, MA · Computers
13. Language IO, Inc.$8MFiled before 202524 Jul 2023 · Cheyenne, WY · Technology
14. Allure Security Technology, Inc.$9.88MFiled before 20253 Feb 2023 · Wellesley, MA · Technology
15. RevenueBase, Inc.$4MFiled before 202523 Nov 2022 · Newtonville, MA · Technology
16. Elemental Machines, Inc.$41.9MFiled before 202517 Nov 2022 · Cambridge, MA
17. Volt Active Data, Inc.$2MFiled before 202517 Oct 2022 · Bedford, MA · Computers
18. CallMiner, Inc.$20MFiled before 202521 Jun 2022 · Waltham, MA · Technology
19. RevenueBase, Inc.$6.16MFiled before 202513 Apr 2022 · Newtonville, MA · Technology
20. Nasuni Corp$60MFiled before 202525 Mar 2022 · Boston, MA
21. Sotero, Inc.$5.79MFiled before 20252 Feb 2022 · Burlington, MA · Technology
22. Language IO, Inc.$6.5MFiled before 202512 Jan 2022 · Cheyenne, WY · Technology
23. ClearGov Inc.$20MFiled before 202521 Dec 2021 · Maynard, MA · Business services
24. aPriori Technologies Inc$30.5MFiled before 20257 Sep 2021 · Concord, MA · Computers
25. Datanomix, Inc.$5.34MFiled before 202517 May 2021 · Nashua, NH · Technology
26. Pliant.io, Inc.$10.5MFiled before 202513 May 2021 · Boston, MA · Technology
27. Pliant.io, Inc.$1.4MFiled before 202510 Aug 2020 · Boston, MA · Technology
28. Nasuni Corp$25MFiled before 202517 Jul 2020 · Boston, MA
29. VoltDB, Inc.$10.2MFiled before 202523 Oct 2019 · Bedford, MA · Computers
30. aPriori Technologies Inc$26.3MFiled before 202528 Aug 2019 · Concord, MA · Computers
31. CallMiner, Inc.$3MFiled before 202518 Jun 2018 · Waltham, MA · Technology
32. NSONE Inc.$23MFiled before 20258 Sep 2017 · New York, NY · Technology
33. Rethink Robotics, Inc.$36MFiled before 202521 Aug 2017 · Boston, MA · Technology
34. VoltDB, Inc.$8.23MFiled before 202513 Jul 2017 · Bedford, MA · Computers
35. CloudHealth Technologies, Inc.$46MFiled before 202527 Jun 2017 · Boston, MA · Technology
36. Virtusa Corp$108MFiled before 202516 May 2017 · Westborough, MA · Technology
37. Barkly Protects, Inc.$6.5MFiled before 202526 Apr 2017 · Boston, MA · Technology
38. CallMiner, Inc.$3MFiled before 202527 Dec 2016 · Waltham, MA · Technology
39. Nasuni Corp$17.7MFiled before 202512 Dec 2016 · Natick, MA · Technology
40. Contently, Inc.$6.99MFiled before 202524 Oct 2016 · New York, NY · Technology
41. aPriori Technologies Inc$3.5MFiled before 20254 Oct 2016 · Concord, MA · Computers
42. NSONE Inc.$17.4MFiled before 20253 Oct 2016 · New York, NY · Technology
43. Interactions Corp$63.6MFiled before 202518 Aug 2016 · Franklin, MA · Technology
44. ShopAdvisor Inc.$1.21MFiled before 202510 Aug 2016 · Concord, MA · Technology
45. CloudHealth Technologies, Inc.$20MFiled before 202516 May 2016 · Boston, MA · Technology
46. CallMiner, Inc.$16.3MFiled before 20256 Jan 2016 · Waltham, MA · Technology
47. BionX Medical Technologies, Inc.$17.1MFiled before 202523 Dec 2015 · Cambridge, MA · Health care
48. Mobiquity Inc.$5MFiled before 202514 Oct 2015 · Wellesley, MA · Telecommunications
49. Acquia Inc$55MFiled before 202528 Sep 2015 · Boston, MA · Technology
50. VoltDB, Inc.$9.82MFiled before 202522 Jul 2015 · Bedford, MA · Computers
51. Barkly Protects, Inc.$12.3MFiled before 20256 Jul 2015 · Boston, MA · Technology
52. Wordstream, Inc.$71.5KFiled before 202524 Apr 2015 · Boston, MA · Technology
53. aPriori Technologies Inc$6MFiled before 202525 Mar 2015 · Concord, MA · Computers
54. Deep Information Sciences, Inc.$6.52MFiled before 202516 Mar 2015 · Portsmouth, NH · Technology
55. CloudHealth Technologies, Inc.$12MFiled before 202529 Jan 2015 · Boston, MA · Technology
56. Rethink Robotics, Inc.$26.6MFiled before 20255 Jan 2015 · Boston, MA · Technology
57. CYLENT Systems, Inc.$4.49MFiled before 202520 Nov 2014 · Boston, MA · Technology
58. Mobiquity Inc.$3MFiled before 202512 Nov 2014 · Wellesley, MA · Telecommunications
59. ShopAdvisor Inc.$1.41MFiled before 202512 Sep 2014 · Concord, MA · Technology
60. Mobiquity Inc.$2MFiled before 202527 Aug 2014 · Wellesley, MA · Telecommunications
61. Wordstream, Inc.$9MFiled before 202510 Jul 2014 · Boston, MA · Technology
62. Acquia Inc$50MFiled before 202527 May 2014 · Burlington, MA · Technology
63. Mobiquity Inc.$3MFiled before 202512 May 2014 · Wellesley, MA · Telecommunications
64. Damballa, Inc.$13MFiled before 202524 Apr 2014 · Atlanta, GA · Technology
65. Wordstream, Inc.$40KFiled before 202523 Apr 2014 · Boston, MA · Technology
66. VoltDB, Inc.$8MFiled before 202514 Mar 2014 · Bedford, MA · Computers
67. Contently, Inc.$8.49MFiled before 202513 Jan 2014 · New York, NY · Technology
68. Silverlink Communications Inc$2MFiled before 202531 Jan 2012 · Burlington, MA · Health care
69. Azuki Systems, Inc$5.1MFiled before 202525 Jan 2012 · Acton, MA

By year

Raises are checked for an announcement from 2025 on.

Funds

The firm's own fund filings, each at its latest filing.