PROTAGONIST THERAPEUTICS, INC. is a California corporation, registered on February 5, 2009. It is based at 7707 GATEWAY BLVD, SUITE 140, NEWARK, CA, 94560, United States. The company is currently listed as active on the California register, is registered under company number 3107553 and carries EIN 980505495. Its officers and directors on record include Don Kalkofen, Matthew Gosling, DINESH V. PATEL, among 4 on file. It operates in pharmaceutical and medicine manufacturing (NAICS 32541). Public records for the company include 1 SoS registration, 4 federal contracts, 1 H-1B filing, 8 Form 5500 filings and 1 SEC filing. Every fact here is republished from an official public register and traces back to a primary source document.
| Legal entity name | PROTAGONIST THERAPEUTICS, INC. |
|---|---|
| Principal address | 7707 GATEWAY BLVD, SUITE 140NEWARK94560CAUnited States |
| Mailing address | 7707 GATEWAY BLVD, SUITE 140, NEWARK, CA, 94560, US |
| Registration state | California |
| Status | Active |
| Formed in | Delaware (foreign registration) |
| Home company | PROTAGONIST THERAPEUTICS, INC. |
| Registered | 5 February 2009 (over 17 years ago) |
| Officers & directors | Don Kalkofen, officer |
| Entity type | Corporation |
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| Standing | compliant |
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| Company number | 3107553 |
|---|
| EIN | 980505495 |
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| Industry | Pharmaceutical and Medicine Manufacturing · NAICS 32541 |
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| Employees (modeled) | ≈131 employees2024 |
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| H-1B filings | 1 LCA filing, FY 2023 |
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| Registered agent | MATTHEW GOSLING |
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| Source registry | California Secretary of State · updated 10 August 2026 |
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| Public records | 1 SoS registration |
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| Est. annual revenue | $46M |
|---|---|
| Est. revenue (modeled) | $68.7M2024 |
| Federal contractor | Yes · 4 federal recipient records (SAM) |
| State | Business name | Filed | Registered agent | Officers | Status | |
|---|---|---|---|---|---|---|
| CaliforniaTHIS | PROTAGONIST THERAPEUTICS, INC. | 2009-02-05 | MATTHEW GOSLING | Don KalkofenOfficerMatthew GoslingOfficer2 more | Active | |
Filing ID 3107553 Jurisdiction Foreign · CorporationFormed in Delaware Principal address 7707 GATEWAY BLVD, SUITE 140, NEWARK, CA, 94560, United States Registered agent MATTHEW GOSLING7707 GATEWAY BLVD SUITE 140, NEWARK, CA, 94560 Officers Don KalkofenOfficer Matthew GoslingOfficer DINESH V. PATELOfficer Asif AliOfficer | ||||||
| Delaware | PROTAGONIST THERAPEUTICS, INC. | 2006-08-22 | CORPORATION SERVICE COMPANY | — | Unknown | |
| North Carolina | Protagonist Therapeutics, Inc. | 2020-05-05 | Woody, Tracy | — | Revoked | |
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| Case | Filed | Job title | Wage | Worksite | Status | |
|---|---|---|---|---|---|---|
| I-200-23228-269064 | 2023-08-16 | Senior Statistical Programmer | $160,000/yr | Newark | Certified | |
Employee-benefit plan filings by PROTAGONIST THERAPEUTICS, INC. with the Department of Labor. Employee and revenue figures are modeled estimates derived from retirement-plan participant counts and industry ratios — not official headcount or reported revenue.
| Employees (modeled) | ≈131 · plan year 2024 |
|---|---|
| Est. annual revenue (modeled) | $68.7M |
| Retirement plan assets | $20.1M |
| Benefit plans | 401(k) plan on file |
| Filing history | 13 plan years filed, 2012–2024 |
| Sponsor EIN | 98-0505495 |
| Plan year | Employees (est.) | Participants | Plan assets | Revenue (est.) | 401(k) | |
|---|---|---|---|---|---|---|
| 2024 | ≈131 | 156 (118 active) | $20.1M | $68.7M | 401(k) | |
| 2023 | ≈119 | 157 (107 active) | $15.7M | $60.3M | 401(k) | |
| 2022 | ≈110 | 142 (99 active) | $11.9M | $58.8M | 401(k) | |
| 2021 | ≈120 | 103 (108 active) | $10.9M | $58.5M | 401(k) | |
| 2020 | ≈81 | 97 (73 active) | $8M | $42.6M | 401(k) | |
| 2019 | ≈88 | 75 (79 active) | $4.9M | $35.5M | 401(k) | |
| 2018 | ≈68 | 58 (61 active) | $3.2M | $28.1M | 401(k) | |
| 2017 | ≈38 | 36 (34 active) | $2.3M | $17.1M | 401(k) | |
| 2016 | ≈26 | 25 (23 active) | $1.4M | $11.4M | 401(k) | |
| 2015 | ≈19 | 19 (17 active) | $916,250 | $7.9M | 401(k) | |
Matched Form 5500 filing records:
| Plan | Plan year | Participants | EIN | |
|---|---|---|---|---|
| PROTAGONIST THERAPEUTICS, INC. 401(K) PLAN | — | — | — | |
| PROTAGONIST THERAPEUTICS, INC. 401(K) PLAN | — | — | — | |
| PROTAGONIST THERAPEUTICS, INC. 401(K) PLAN | — | — | — | |
| PROTAGONIST THERAPEUTICS, INC. 401(K) PLAN | — | — | — | |
| PROTAGONIST THERAPEUTICS, INC. 401(K) PLAN | — | — | — | |
| PROTAGONIST THERAPEUTICS, INC. 401(K) PLAN | — | — | — | |
| PROTAGONIST THERAPEUTICS, INC. 401(K) PLAN | — | — | — | |
| PROTAGONIST THERAPEUTICS, INC. 401(K) PLAN | — | — | — | |
| CIK / File | Filed | Form | Detail | |
|---|---|---|---|---|
| 1377121 | — | — | — | |
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Companies adjacent to PROTAGONIST THERAPEUTICS, INC. in the California Secretary of State register, in alphabetical order.
Netstate aggregates public records from federal, state and municipal sources; records are matched to this company by its registered legal names. Latest source snapshot 2026-08-13. Document getpalm-companies/6890-9697-6274.