What is a share register? Guide for Australian companies

Every Australian company must keep a share register. It records who owns the company’s shares, how many they hold, which class those shares belong to, and when ownership changed. The Corporations Act 2001 (Cth) requires it, and in practice it is also how boards track shareholder communications, dividend entitlements, and voting rights.

What is a share register?

A share register is the record required under s168 of the Corporations Act 2001. Every company registered with ASIC must have one. It lists each member’s name and address, the shares they hold (by class), whether those shares are fully paid, and the dates they were added to or removed from the register.

According to ASIC, proprietary companies must notify ASIC of any changes to their membership details, while public companies are not generally required to do so — though public companies with more than 20 members must still report changes affecting the top 20 members in each share class. If a company issues or cancels shares or makes changes to the share structure, it must notify ASIC.

Shareholders are organised in the register by share class. Any transaction that changes ownership or share capital — issuance, transfer, buy-back, or redemption — must be recorded.

Why share registers matter

The register is how your board knows who can vote, who receives dividends, and who has a right to information. It is also an audit trail. If a dispute arises over ownership or a regulator asks questions, the register is the first document they will look at.

Getting it wrong has consequences. ASIC can impose penalties for breaching the Corporations Act, and inaccurate records can lead to financial losses or disputes that damage the company’s reputation.

Who is responsible for the share register?

Directors are legally responsible for setting up and maintaining the register under s168 of the Corporations Act. Most delegate the day-to-day work to the company secretary or an external share registry provider.

Under s173 of the Act, members can inspect the register at no cost. Non-members can also inspect it for a fee, but there is a catch: the information can only be used for purposes related to the company’s affairs or a share offer. Sending marketing material to shareholders using register data, for example, is prohibited.

Your board should have clear procedures for who updates the register, how changes are approved, and how the data is secured. A board registers tool or board portal can help keep the register current and accessible to the right people.

When to update the share register

Several common transactions require an update to the register:

Share transfers. When shares change hands by sale or gift, the register must be updated with the new owner’s details.

Share issuances. When new shares are created — to raise capital or bring in new shareholders — the register must record the date of issue, the recipient, and the class of shares. Proprietary companies notify ASIC via Form 484.

Share buy-backs. A company may buy back its own shares under Part 2J.1 of the Corporations Act. On-market buy-backs within the 10/12 limit (no more than 10% of the smallest number of voting shares at any point in the preceding 12 months) do not need shareholder approval, but ASIC must be notified 14 days beforehand. Buy-backs above the 10/12 limit require shareholder approval.

Share redemptions. Redeemable preference shares can be redeemed under s254J. This is a different transaction from a buy-back with its own procedures. Redeemed shares are cancelled and removed from the register.

What goes in the share register?

Under s169 of the Corporations Act 2001, a company limited by shares must record these details for each member:

• Name (or corporate name) and address
• Date of entry in the register
• Number of shares held
• Class of shares held
• Whether shares are fully paid and any amount unpaid
• Date shares were allotted (if applicable)
• Whether shares are held beneficially or as a nominee/trustee
• Date the person ceased to be a member

A company limited by guarantee (without share capital) must record:

• Name (or corporate/firm name) and address
• Date the guarantor was registered as a member
• Date they ceased to be a member

Proprietary companies report changes via Form 484. All companies must also complete an annual review with ASIC, which confirms or updates company details including the share structure.

Best practices

Audit your register regularly. Review shareholder data, check for missing entries after recent transactions, and make sure the information matches what has been lodged with ASIC. Compliance reviews are also a good time to check whether recent changes in the law affect how you maintain the register.

If you are still working from a spreadsheet, consider moving to a digital platform. It is easier to spot gaps, harder to accidentally overwrite data, and simpler to keep a clear audit trail. A board registers tool lets you manage the share register alongside other governance records like conflicts of interest declarations and attendance registers.

Related Terms

Governance

Board Portal

Risk Register

Resources

ASIC — Members Register Requirements and Changes

ASIC — Company Share Buy-Backs

Corporations Act 2001 (Cth) — Current Compilation

Director Financial Literacy

Our Cat Herder — Board Registers