Boron One Holdings Inc. is an international mineral exploration and development company with boron assets in Serbia, including the Piskanja Project. Company updates focus on advancement of its boron asset base, regulatory and technical steps tied to project approvals, and the role of boron in industrial supply chains and decarbonization-related materials.
Recurring news also covers non-brokered private placements, unit financings, common share warrants, finder’s fees, insider participation, TSX Venture Exchange approvals, and securities hold periods. These releases document how the company funds exploration and development activity while pursuing approvals for its Serbian boron project.
Boron One Holdings (ERVFF) reported an updated preliminary economic assessment for Piskanja, estimating US$638.8 million in post-tax net present value.
The assessment of the wholly owned Serbian boron project uses an 8% discount rate and estimates an 89.0% post-tax internal rate of return, a measure of investment return. It models a 13-year mine life, US$1.16 billion in post-tax net project cash flow before financing and capital payback less than 12 months after commercial production starts. Initial capital, including contingency, is estimated at US$79.9 million.
Measured and indicated resources total 7,139,808 tonnes grading 32.40% boron oxide. The model assumes US$650 per tonne for sales-grade colemanite and ulexite and US$1,000 per tonne for technical-grade boric acid. Capital and operating cost estimates have ±35% accuracy; these are preliminary projections, not operating results.
Boron One Holdings (ERVFF) has begun this season’s field exploration program on its 21 km² Jarandol Basin license in southern Serbia. The work, executed by wholly owned subsidiary Balkan Gold, includes geological mapping at 1:2,500 scale, 75 soil samples, 3 trenches with 33 trench samples, 4 drill holes totaling about 1,400 m, 120 core samples and 65 petrographic samples.
The program aims to test high‑value drill targets for boron identified in earlier work and to evaluate potential extensions of the company’s Piskanja boron deposit and/or the nearby Pobrdje boron mine, as well as other possible boron deposits. Earlier drilling in the basin returned borate intervals up to 1.88 m grading 41.33% B₂O₃, 1.3 m at 41.88% B₂O₃ and 1.75 m at 39.71% B₂O₃.
Boron One Holdings (OTC: ERVFF, TSXV: BONE) reported it has produced commercial‑grade colemanite concentrate from test samples from its Piskanja boron deposit using conventional, environmentally sustainable and readily available processing technologies. The test material was designed to closely simulate anticipated run‑of‑mine feed, including representative hanging wall and footwall waste consistent with Piskanja’s mining dilution models.
According to Boron One, these processing results, together with related tailings and backfill studies, constitute the final amendments requested by the Serbian Mining Ministry for the Serbian‑compliant Feasibility Study. The company has requested a suspension of the Ministry’s documentation review until the amendments are complete, after which it plans to resubmit the updated study to continue the Exploitation Field approval process.
Boron One Holdings (TSXV:BONE, OTC:ERVFF) recaps recent milestones amid tightening global boron markets and rising boric acid prices. The company secured its first binding, multi-year offtake agreement for future boron products, covering at least 25,000 tonnes per year, expandable to 50,000 tonnes, under a three-year take-or-pay structure with a guaranteed floor price starting at commercial operations.
Balkan Gold completed its seasonal exploration program at Serbia’s Jarandol Basin, including surface mapping across six areas and regulatory filings, with the exploration license in good standing and drill targets defined. Boron One also closed an oversubscribed private placement of 20,000,000 units at $0.05 for gross proceeds of $1,000,000 to fund engineering, technical studies, and permitting. Management highlights priorities of additional offtakes, advancing metallurgical and engineering work, and progressing Serbian permitting toward commercial production.
Boron One (OTC: ERVFF, TSXV: BONE) announced a change of auditor following the resignation of Smythe LLP as auditor effective July 24, 2026. According to Boron One, the resignation did not involve any disagreement on accounting principles, disclosure, or audit scope, and Smythe LLP had not issued a modified opinion on the June 30, 2025 financial statements, nor were there any reportable events under NI 51-102.
The board appointed De Visser Gray LLP as successor auditor, to serve until the next annual general meeting. The required Notice of Change of Auditor and related letters from both firms have been filed on SEDAR+ under the company’s profile.
Boron One Holdings (OTCQB: ERVFF, TSXV: BONE) closed an oversubscribed private placement of 20,000,000 units at $0.05, raising $1,000,000 in gross proceeds. Each unit includes one share and a three-year warrant with tiered exercise prices. Net proceeds will support working capital.
The company paid $70,000 in finder’s fees and issued 1,400,000 broker warrants. It also plans to grant 500,000 stock options to a consultant. The financing and options are subject to TSX Venture Exchange approval.
Boron One (TSXV:BONE, OTC:ERVFF) announced a non-brokered private placement of up to $750,000, priced at $0.05 per unit, and reports that the offering is fully subscribed. Each unit includes one common share and a three-year warrant, exercisable at $0.06 for the first year, then $0.10 for the next two years, with accelerated-expiry triggers based on share price. Net proceeds are earmarked for working capital, and the placement remains subject to TSX Venture Exchange approval.
Boron One Holdings (TSXV:BONE, OTC:ERVFF) signed a binding multi‑year offtake agreement for future boron concentrates and derivative products. The three‑year term will start once fully operational production facilities are established and specified Conditions Precedent are met.
The buyer committed to purchase a minimum of 25,000 tonnes of product annually, with an option to increase up to 50,000 tonnes. The contract includes a take‑or‑pay clause and market‑linked pricing with a minimum floor price, adjusted annually.
Boron One Holdings (OTC:ERVFF) reported completion of its 2025‑26 field exploration program in the Jarandol Basin, Serbia. The work satisfies Ministry of Mining requirements to keep the Jarandol Exploration License in good standing.
Activities covered 6 km2 of mapping, 178 rock/trench samples, 121 soil samples, and set up targets for the next drilling phase. Previous drilling in the Basin returned borate intersections up to 1.88 m grading 41.33% B2O3, meeting the company’s economic criteria.
Boron One Holdings (TSXV: BONE) closed its previously announced private placement on April 29, 2026, issuing 19,887,500 units at $0.04 per unit for gross proceeds of $795,500.
Each unit = one common share + one warrant (3‑year term) with staged exercise prices of $0.05 (year 1) and $0.10 (years 2–3), with issuer acceleration triggers. Proceeds are intended for working capital and testing/planning for boron ore extraction; securities subject to a four‑month hold.