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Dundas Minerals Limited (ASX:DUN) has informed the market that three categories of unquoted Options totaling 3,000,000 securities expired unexercised on 1 July 2026. These included 2,000,000 restricted options (DUNAK), 500,000 options with a $0.25 exercise price (DUNAO), and 500,000 options with a $0.30 exercise price (DUNAP). No payment was made by the company related to these expirations. This development slightly lowers the potential dilution risk on Dundas Minerals' ordinary share register, which currently holds 235,025,183 fully paid ordinary shares.
Key Points
- Company: Dundas Minerals Limited (ASX:DUN)
- Three unquoted option classes—DUNAK, DUNAO, and DUNAP—expired on 1 July 2026, totaling 3,000,000 securities
- Exercise prices for priced options were $0.25 (DUNAO) and $0.30 (DUNAP); restricted options (DUNAK) had no disclosed exercise price
- Dundas Minerals paid no consideration for the expiration of these options
- Post-expiry, the ordinary share count remains at 235,025,183, with a significant number of unquoted options still outstanding
- Investors should monitor the upcoming expiry of DUNAL (2,000,000 restricted options) on 2 July 2026, one day after these expirations
Three Classes of Dundas Minerals Options Expire Without Exercise on 1 July 2026
On 2 July 2026, Dundas Minerals Limited filed an Appendix 3H notification confirming that three classes of unquoted Equity securities—DUNAK, DUNAO, and DUNAP—expired on 1 July 2026 without being exercised or converted into ordinary shares. The company stated no consideration was paid in connection with these expirations.
The largest tranche was DUNAK, consisting of 2,000,000 restricted options. The other two tranches were priced options: 500,000 DUNAO options at a $0.25 exercise price and 500,000 DUNAP options at a $0.30 exercise price. Combined, these 3,000,000 options will no longer be part of Dundas Minerals' Capital Structure.
Insights from $0.25 and $0.30 Exercise Prices on Holder Behavior
The lapse of DUNAO and DUNAP options, priced at $0.25 and $0.30 respectively, indicates that the market price of DUN shares was below these strike prices at or before the 1 July 2026 expiry date. Option holders generally exercise in-the-money options to realise value, so the decision not to exercise suggests the shares traded below these levels. The immediate share price impact of these expirations was not disclosed.
The restricted DUNAK options had no publicly stated exercise price, and their expiration may be due to unmet vesting or performance conditions. The company did not provide further explanation or management commentary regarding the holders’ decisions not to exercise any of these options.
Dundas Minerals' Ordinary Share Count Remains at 235 Million Following Option Expirations
After these expirations, Dundas Minerals' total ordinary shares on issue remain at 235,025,183 fully paid shares (ASX Code: DUN). Since none of the 3,000,000 options were exercised, the ordinary share register is unchanged. The reduction in outstanding securities applies solely to the unquoted options.
For shareholders, the expiry of these options without conversion is neutral to slightly positive, as it removes the possibility of future dilution from these specific options. Eliminating 3,000,000 potential shares from the fully diluted capital base marginally reduces theoretical dilution risk.
Remaining Unquoted Options Portfolio After July 2026 Expiries
Dundas Minerals continues to hold a substantial portfolio of unquoted options across various tranches and expiry dates. According to the Appendix 3H filing, remaining options include: DUNAY (2,000,000 options, expiring 5 January 2029, $0.05 exercise price), DUNAZ (2,000,000 options, 5 January 2029, $0.10), DUNAS (15,000,000 options, 16 June 2029, $0.033), DUNAT (15,000,000 options, 16 June 2029, $0.0374), DUNAU (5,000,000 options, 15 December 2028, $0.04), DUNAV (5,000,000 options, 15 December 2029, $0.08), and DUNAW (5,000,000 options, 15 December 2030, $0.16).
Additional classes include DUNAX (2,500,000 options, 15 December 2028, $0.08), DUNAAA (5,000,000 options, 17 April 2030, $0.08), DUNAAB (5,000,000 options, 17 April 2030, $0.12), DUNAA (14,000,000 options, 6 May 2029, $0.06), DUNAB (8,000,000 options, 6 May 2029, $0.10), DUNAL (2,000,000 restricted options, 2 July 2026), DUNAM (1,000,000 options, 10 November 2026, $0.25), and DUNAN (1,000,000 options, 10 November 2026, $0.30). These remaining options represent a significant potential dilution pool for investors to consider.
DUNAL Restricted Options Set to Expire One Day After Current Expirations
Of immediate interest is the DUNAL tranche of 2,000,000 restricted options expiring on 2 July 2026, a day after the recently expired options. As of this update, these options remain outstanding. Whether holders exercise or allow them to lapse will be closely watched by investors monitoring the reduction of Dundas Minerals’ options overhang.
If DUNAL also expires unexercised, an additional 2,000,000 options will be removed from the unquoted register within two days. The company has not provided guidance on the expected outcome of this expiry.
November 2026 Priced Options Mark Next Key Expiry Dates
Looking ahead, two priced option tranches—DUNAM (1,000,000 options at $0.25) and DUNAN (1,000,000 options at $0.30)—are scheduled to expire on 10 November 2026. These mirror the exercise prices of the recently expired DUNAO and DUNAP options, which may inform investor expectations depending on share price movements.
Should both November tranches be exercised, gross proceeds would total $550,000 ($250,000 from DUNAM and $300,000 from DUNAN). The company has not offered guidance on the likelihood of these exercises, and investors should not assume the July expirations predict the November outcomes.
Long-Dated, Low-Strike Options Constitute the Largest Dilution Risk
The largest portion of Dundas Minerals' remaining unquoted options by volume are longer-dated and low-priced. DUNAS and DUNAT together account for 30,000,000 options expiring in June 2029 with exercise prices of $0.033 and $0.0374. Similarly, DUNAA and DUNAB represent 22,000,000 options expiring in May 2029 at $0.06 and $0.10 respectively. These tranches form the bulk of the company’s potential dilutive capital.
If all outstanding options were exercised—a scenario dependent on market conditions and holder decisions—the ordinary shares on issue would increase substantially from the current 235,025,183. No fully diluted share count or strategic commentary was provided in the 2 July 2026 update.
No Payment Made by Dundas Minerals for Option Expirations
The Appendix 3H filing confirms Dundas Minerals did not pay any consideration related to the expiration of DUNAK, DUNAO, or DUNAP. This is standard when options expire unexercised, resulting in extinguishment without cash outflow or buyback. The event is administrative and structural rather than transactional.
This is important for investors assessing the company’s financial position, as the expirations have no direct impact on Dundas Minerals’ Balance Sheet or cash reserves. No financial details were disclosed in connection with this update.
Implications of Updated Capital Structure for Investors
The updated capital table provides market participants with a current snapshot of Dundas Minerals’ securities structure. The ordinary share count of 235,025,183 is used by ASX to calculate the company’s Market Capitalisation, which can influence index inclusion, Liquidity, and institutional eligibility, though the company did not comment on these aspects.
For shareholders, the key takeaway is that while three option classes have been removed, a large and diverse portfolio of unquoted options remains, with expiry dates from July 2026 through December 2030. Monitoring the exercise or expiry of these, especially the near-term DUNAL expiry and November 2026 priced options, may provide insight into market sentiment toward Dundas Minerals. Investors are advised to consult the full Appendix 3H filing for comprehensive details.
