Stoneturn Group LLP

Stoneturn Group LLP, a Boston-based litigation consulting and expert witness services firm, operates exclusively as a prime contractor delivering specialized financial analysis, forensic investigation, and expert testimony to the Department of Justice and the Securities and Exchange Commission, competing exclusively in full-and-open procurements without set-aside designation.

Stoneturn is a for-profit limited liability partnership headquartered at 75 State Street, Boston, Massachusetts, with primary capability coding under "Support–Professional: Expert Witness" (44 of 48 awards) and secondary capability under "All Other Legal Services" (37 awards) and administrative management consulting (10 awards). The firm specializes in complex litigation support spanning financial regulations, securities law violations, fraud investigations, False Claims Act matters, and damages calculations. The firm has maintained federal contracting eligibility since 2007 and operates without subcontractors — all 48 awards in the source are prime contracts with zero sub-award activity.

Customer concentration is extreme and anchored to DOJ. The Department of Justice Civil Division accounts for 26 of 44 awards (59% of award count) with $3.9 million combined potential value; the DOJ U.S. Attorney's Offices hold 8 awards ($2.1 million); and the Securities and Exchange Commission holds 6 awards ($2.1 million). Together these three customer entities represent 40 of 44 awards tracked in the source (92% coverage), with the remaining activity split among the DOJ Civil Rights Division (2 awards, $232 thousand), the DOJ Justice Management Division (2 awards, $219 thousand), and the DOJ Executive Office for U.S. Attorneys (1 award, $242 thousand). The top-dollar and top-volume rankings track closely — DOJ Civil Division dominates both dimensions.

Recent award examples typify the portfolio: a $1.033 million time-and-materials purchase order from DOJ Civil Division for expert witness services running through December 31, 2026 (awarded November 2022); a $480,000 litigative consultant purchase order from U.S. Attorney's Offices (March 2026); a $477,573 definitive contract from the Securities and Exchange Commission for expert witness services (September 2023); and a $150,000 purchase order from U.S. Attorney's Offices for litigative consultant–data analysis services (April 2025). Stoneturn's most recent awards, issued in June and July 2026, are two DOJ Civil Division purchase orders for expert witness services valued at $110,262 and $177,246, extending through December 31, 2029.

Activity has been episodic. Award volume peaked in 2025 with 6 awards, declined to 4 in 2026 year-to-date, and averaged 4.4 awards per year across the past five years (2022–2026: 5, 2, 5, 6, 4 respectively). Four awards with ultimate completion dates in the next twenty-four months carry combined potential value of $2 million and represent near-term recompete exposure for the vendor.

Service Contract Inventory data, covering federal service contracts above the $150,000 reporting threshold, shows SCI-reportable invoiced revenue of $1.7 million across FY2022–FY2024. SCI invoicing peaked in FY2023 at $1.4 million across 1.7 full-time equivalents; FY2022 showed $264 thousand across 0.4 FTEs; FY2024 recorded no SCI invoicing in the source data, likely reflecting reporting lag or contract structure changes. On the SCI-reportable contracts Stoneturn delivered as prime, government-paid hourly rates ran a median of $372.13 per hour, with the 10th percentile at $341.68 per hour and the 90th percentile at $452.40 per hour — positioning the firm in the senior professional services tier. Across SCI-reportable prime contracts, Stoneturn performed 0% of hours through named subcontractors, confirming the firm's fully staffed, internal-delivery model.