Form 5500 · Employee benefit plan · CAMBRIDGE, MA
INTERSYSTEMS CORPORATION
The filing calls this plan INTERSYSTEMS CORPORATION EMPLOYEE BENEFIT PLAN.
Public Form 5500 records show how INTERSYSTEMS CORPORATION of CAMBRIDGE, MA, a professional services employer, structures its employee benefits. Its broker of record is GALLAGHER BENEFIT SERVICES, INC. Coverage is written through BLUE CROSS BLUE SHIELD OF MASSACHUSETTS, INC. and 3 other carriers. The plan's most recent policy period ended in December.
Sourced from U.S. DOL EFAST2 Form 5500 · EIN 04-2639026 · plan 501 · plan year 2025, filed May 26, 2026
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1,456 other employer plans in Massachusetts have policy years ending in December. See the full list on the renewal calendar, or ask for it in Claude or ChatGPT.
How this plan is funded
Fully insured as reported
The filing reports medical coverage through an insurance contract on Schedule A, and no money paid for benefits by the plan itself.
Benefits declared on this filing
Also declared: death benefits.
Declared benefits are the plan’s own line 8b codes on Form 5500. “Not on Schedule A” means no insured contract for that line appears on this filing. That usually means the benefit is self-funded, or it sits under a different plan number.
Persons covered is the count the carrier filed for that policy at the end of its policy year, and it can include dependents. Participants is the plan's own count at the start of its plan year. The two count different people, so a covered figure can be larger.
Plan brief
Schedule A lists 4 insured contracts covering health, dental, vision, life and disability; the largest, with BLUE CROSS BLUE SHIELD OF MASSACHUSETTS, INC., covers 1,585 people.
Reported premium across the insured contracts is $20,249,176, with $284,350 in disclosed broker commissions — about 1.4% of premium.
The health contract's policy period ended in December, while at least one ancillary line's policy period ended in September. The plan is on a split renewal cycle.
GALLAGHER BENEFIT SERVICES, INC is the broker of record on all 4 contracts.
4 carriers appear on the filing, including BLUE CROSS BLUE SHIELD OF MASSACHUSETTS, INC., RELIANCE STANDARD LIFE INSURANCE COMPANY, EYEMED VISION CARE ON BEHALF OF FIDELITY SECURITY LIFE INSURANCE CO. and ZURICH AMERICAN INSURANCE COMPANY. BLUE CROSS BLUE SHIELD OF MASSACHUSETTS, INC. writes the largest contract by premium.
Schedule A insurance contracts
| Carrier | Benefits | Covered | Renews | Premium | Commission |
|---|---|---|---|---|---|
| BLUE CROSS BLUE SHIELD OF MASSACHUSETTS, INC. | Health, Dental | 1,585 | Jan 1, 2026 | $18,982,313 | $231,146 |
| RELIANCE STANDARD LIFE INSURANCE COMPANY | Life, Disability | 946 | Jan 1, 2026 | $1,177,418 | $41,517 |
| EYEMED VISION CARE ON BEHALF OF FIDELITY SECURITY LIFE INSURANCE CO. | Vision | 1,121 | Jan 1, 2026 | $85,257 | $11,059 |
| ZURICH AMERICAN INSURANCE COMPANY | — | 946 | Sep 10, 2025 | $4,188 | $628 |
Premium and claims on this contract
BLUE CROSS BLUE SHIELD OF MASSACHUSETTS, INC., contract 4933164. For the contract year on this filing, the carrier reported $18,982,313 in premium earned and $15,371,722 in claims incurred. Dividing one by the other gives 81%.
- BLUE CROSS BLUE SHIELD OF MASSACHUSETTS, INC., contract 4933164 reported $3,610,592 in retention.
Retention is what the carrier kept of the premium after claims, as reported: administration, commissions and other charges.
Only experience-rated contracts report these figures, so most filings leave them blank.
Covered = persons covered at policy year end, as filed on Schedule A for that policy — often certificates or one class, not the whole plan. Premium = the filing’s own premium/charges figure; “—” means not credibly reported.
Administrator and service providers
The plan administrator is from line 3a of the main form. We publish company names only.
Other plans filed by this employer
How this plan compares
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Renewal calendar
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