Top 40 Contractors in PSC C1JA: Architect and Engineering – Construction: Museums and Exhibition Buildings, Jul 2025–Jun 2026
Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Code page on GovTribe
The top 10 won 83% of PSC C1JA contract dollars from July 2025 through June 2026
Ranking facts
- Contract obligations
- $33,866,859 Net of deobligations, by contracts coded PSC C1JA
- Contractors
- 40 Parent companies with an obligation
- Largest contractor
- Siris LLC $6.99 million, 20.4% of obligations
- Data as of
Contract actions from FPDS (SAM.gov). How the rankings work · Download all 40 rows as CSV
Full ranking
| Rank | Contractor | Net obligations | Share | Trend |
|---|---|---|---|---|
| 1 |
Siris LLC
Top agencies
|
$6,991,844 | ||
| 2 |
Stantec Inc.
Top agencies
|
$4,928,506 | ||
| 3 |
Ewing Cole Inc.
Top agencies
|
$3,263,426 | ||
| 4 | $3,100,006 | |||
| 5 | $3,077,055 | |||
| 6 | $2,080,826 | |||
| 7 |
Gwwo, Inc.
Top agencies
|
$1,415,189 | ||
| 8 | $1,375,990 | |||
| 9 |
Smithgroup, Inc.
Top agencies
|
$1,086,299 | ||
| 10 |
Ziger / Snead LLP
Top agencies
|
$941,686 | ||
| 11 | $743,695 | |||
| 12 | $698,313 | |||
| 13 | $453,945 | |||
| 14 | $431,214 | |||
| 15 | $428,556 | |||
| 16 | $344,225 | |||
| 17 | $309,837 | |||
| 18 |
GHD Inc.
Top agencies
|
$305,577 | ||
| 19 | $304,638 | |||
| 20 | $262,207 | |||
| 21 | $230,826 | |||
| 22 | $190,425 | |||
| 23 | $172,862 | |||
| 24 |
LJB Inc.
Top agencies
|
$128,800 | ||
| 25 |
Page-Loring LLC
Top agencies
|
$109,252 | ||
| 26 |
Ware Malcomb
Top agencies
|
$90,723 | ||
| 27 | $78,840 | |||
| 28 |
Golder Europe Service Centre SRL
Top agencies
|
$66,122 | ||
| 29 |
Architrave P.C.
Top agencies
|
$65,785 | ||
| 30 | $54,550 | |||
| 31 |
RBA Group the
Top agencies
|
$54,377 | ||
| 32 |
Perkins+Will, Inc.
Top agencies
|
$48,920 | ||
| 33 | $48,843 | |||
| 34 | $44,750 | |||
| 35 |
LF Consultech SA
Top agencies
|
$39,896 | ||
| 36 |
BBB IBI JV
Top agencies
|
$34,941 | ||
| 37 | $33,308 | |||
| 38 | $27,062 | |||
| 39 | $13,351 | |||
| 40 | $11,618 |
Show all 40
How this ranking works
- Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
- Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $34.2 million obligated before deobligations, so they never pass 100%.
- Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
- Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
- Rank changes compare with Jul 2024–Jun 2025. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
- Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list.
- Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.
Quick answers
Who were the top 10 PSC C1JA contractors in Jul 2025–Jun 2026?
1. Siris LLC ($6.99M), 2. Stantec Inc. ($4.93M), 3. Ewing Cole Inc. ($3.26M), 4. Lendlease (Us) Construction Inc. ($3.1M), 5. Hartman-Cox Architects LLP ($3.08M), 6. Mills & Schnoering Architects LLC ($2.08M), 7. Gwwo, Inc. ($1.42M), 8. Quinn Evans Architects Inc. ($1.38M), 9. Smithgroup, Inc. ($1.09M), 10. Ziger / Snead LLP ($942K).
On GovTribe
Research every contractor on this list
- Every contract, task order and IDV they hold
- Their subsidiaries, teammates and competitors
- Open opportunities they're positioned for
- Alerts when they win new work