Guide

Warrants, options and convertible loans, in plain words.

What each of them is, what happens in real life step by step, and what you enter in aktiebok.io at each step.

In short

None of these are shares. A share register lists shares and who holds them. A warrant, an option or a convertible loan is a right to get shares later, so it is not in the register, and the law does not ask for it there. The register gets a new line on the day the right is used and shares are handed out.

aktiebok.io keeps warrants and options beside the register, so that the cap table can answer the question every investor asks: who would own what if all of it were used. That view is called fully diluted.

Teckningsoptioner (warrants)Personaloptioner (employee options)Convertible loan
What it isA right to subscribe for new shares at a set price, issued by the companyA promise in an agreement between the company and an employeeA loan that can be swapped for shares
Who usually gets itInvestors, founders, key peopleEmployeesLenders, often existing owners before a round
What the holder pays at the startUsually the market value of the warrantNothingThe loan amount
Registered at BolagsverketYesNoYes, when it is a konvertibel in the law's sense
In aktiebok.io before it becomes sharesA programme, shown fully dilutedA programme, shown fully dilutedNothing; it is planned in the simulator
In the share registerOnly the shares, from the day they are allottedOnly the shares, from the day they are allottedOnly the shares, from the day of conversion
Teckningsoptioner (warrants)
What it is
A right to subscribe for new shares at a set price, issued by the company
Who usually gets it
Investors, founders, key people
What the holder pays at the start
Usually the market value of the warrant
Registered at Bolagsverket
Yes
In aktiebok.io before it becomes shares
A programme, shown fully diluted
In the share register
Only the shares, from the day they are allotted
Personaloptioner (employee options)
What it is
A promise in an agreement between the company and an employee
Who usually gets it
Employees
What the holder pays at the start
Nothing
Registered at Bolagsverket
No
In aktiebok.io before it becomes shares
A programme, shown fully diluted
In the share register
Only the shares, from the day they are allotted
Convertible loan
What it is
A loan that can be swapped for shares
Who usually gets it
Lenders, often existing owners before a round
What the holder pays at the start
The loan amount
Registered at Bolagsverket
Yes, when it is a konvertibel in the law's sense
In aktiebok.io before it becomes shares
Nothing; it is planned in the simulator
In the share register
Only the shares, from the day of conversion

In aktiebok.io: six things to do

A programme is entered once, with its terms. After that you only move its warrants or options. Four of the six things to do are under Add entry, in the group Warrants & options; the two done less often are under More entry types.

New programme
The kind, the terms once, how many in all, and the holders with how many each.
Give out
To a holder, out of what is unallocated.
Take back
From a holder, back to unallocated. One line on the form says they were cancelled instead.
Exercise
A holder's warrants or options become shares, in the holder's name.
Transfer warrants
Warrants from one holder to another. Under More entry types.
Cancel units
The board cancels what is unallocated. Under More entry types.
aktiebok.io · Add entry · Warrants & options
New programmeGive outTake backExercise
ProgrammeOptionsprogram 2026 · 50 000 unallocated
ToCleo
Options10 00050 000 unallocated.
10 000 options from Unallocated to Cleo.Add to draft

Each of them is an entry in a draft: you review it, in words and in figures, and nothing is registered until you confirm. Each stays in the History under the same name.

What the cap table then shows is in The cap table and dilution, and what is filed with Bolagsverket in Filing with Bolagsverket.

Teckningsoptioner

In plain words. The company promises that the holder may subscribe for new shares later, at a price set today. If the company has grown, that price is a bargain and the holder uses the right. If not, the holder lets it run out.

In real life, and in aktiebok.io

What happensWhat you do in aktiebok.io
01
What happensThe general meeting decides to issue warrants: how many, at what subscription price, until when, and who may subscribe. The board may decide instead if the meeting approves it afterwards or authorised it beforehand.
In aktiebok.ioNothing yet. To see what the programme would do to the ownership, use Simulate with a new option pool.
02
What happensThe holders subscribe for their warrants and pay for them. The board files the decision with Bolagsverket within six months.
In aktiebok.ioNew programme. Choose Warrants. Give the terms once (the price per share and the last day to use them), then each holder with their number of warrants.
03
What happensSomeone sells warrants to another person.
In aktiebok.ioTransfer warrants: from whom, to whom, how many.
04
What happensSomeone leaves and sells their warrants back to the company.
In aktiebok.ioTake back. The warrants go to Unallocated, and can be given out to the next person with Give out. If the board cancelled them, say so on the same form: the programme then gets smaller.
05
What happensA holder uses warrants: subscribes for shares and pays. The board allots the shares.
In aktiebok.ioExercise. The shares go into the register the same day, in the holder's name, marked Not registered.
06
What happensBolagsverket registers the new shares.
In aktiebok.ioIn History, click Not registered on the entry and give the registration date and the share capital from the registreringsbevis.
07
What happensThe last day passes with warrants unused.
In aktiebok.ioNothing. They stop counting on their own.
An example · Another company

1 000 000 shares. The meeting issues 50 000 warrants at 40 kr per share, to be used by 30 June 2029. Elin Berg takes 30 000 and Omar Lind 20 000.

  • The share register is unchanged: 1 000 000 shares.
  • The cap table, fully diluted, shows 1 050 000, with Elin and Omar on their own rows.
  • In June 2029 Elin uses hers. The register gets 30 000 new shares in her name, and the company gets 1 200 000 kr.
  • Omar does not use his. After 30 June they are gone from the fully diluted view, with no entry made.

Personaloptioner, and the kvalificerade kind

In plain words. The company promises an employee, in an agreement, the right to get shares later at a set price, usually on the condition that they stay for some years. The employee pays nothing for the promise.

Kvalificerade personaloptioner (KPO, in English QESO) are the same thing arranged to meet the conditions of a tax rule for young, small companies, which removes the tax on the benefit when the options are used. Whether a programme meets those conditions is a question for the company's adviser and Skatteverket; a register cannot tell. In aktiebok.io both are entered as Employee options.

The part that confuses everyone. An option is only a promise. To be sure the shares can be delivered years later, most companies issue warrants to themselves when the programme starts and keep them in store. When an employee uses options, the company hands over the same number of warrants and the employee uses them at once to subscribe for shares. The other way is for a general meeting to decide on a new issue to the employee when the time comes, with no warrants at all.

In aktiebok.io you do not have to think about that. You enter one thing, the programme: how many options the meeting decided in all, and who has been promised how many. What is not yet promised to anyone shows as one row, Unallocated. If the company holds warrants in store, that row is them. You never enter the stored warrants separately, so nothing is counted twice.

aktiebok.io · Blåsippan Robotics AB
Cap tableRegisterHistory
Optionsprogram 2026Employee options · shares at 30,00 kr · until 2030-12-31
HolderOptions
Anna30 000
Ben20 000
Unallocated50 000
100 000 options in all. They count fully diluted, and are not in the share register.

In real life, and in aktiebok.io

What happensWhat you do in aktiebok.io
01
What happensThe general meeting approves the programme, and usually issues warrants that only the company itself subscribes for.
In aktiebok.ioNew programme. Choose Employee options. Give the options in all, the price per share and the last day to use them.
02
What happensThe company signs option agreements with employees.
In aktiebok.ioAdd each person with their number, in the same entry or later with Give out.
03
What happensA new hire is promised options later.
In aktiebok.ioGive out. They come from Unallocated, and the form says how many are left there.
04
What happensSomeone leaves and loses options.
In aktiebok.ioTake back. They return to Unallocated.
05
What happensAn employee uses options: gets the shares and pays the price. The board allots the shares.
In aktiebok.ioExercise. The shares go into the register in the employee's name the same day, marked Not registered.
06
What happensBolagsverket registers the new shares.
In aktiebok.ioIn History, click Not registered on the entry and give the registration date and the share capital from the registreringsbevis.
07
What happensThe board cancels what was never promised or was taken back.
In aktiebok.ioCancel units.
An example · Another company

The meeting decides on a programme of 100 000 options. Anna gets 30 000 and Ben 20 000.

ThenAnnaBenCleoUnallocatedFully diluted
The programme starts30 00020 000—50 000100 000
Cleo is hired and gets 10 00030 00020 00010 00040 000100 000
Ben leaves30 000010 00060 000100 000
Anna uses hers: 30 000 new shares in the register0010 00060 00070 000
The board cancels the 60 0000010 000010 000
  1. 1The programme starts
    Anna
    30 000
    Ben
    20 000
    Unallocated
    50 000
    Fully diluted
    100 000
  2. 2Cleo is hired and gets 10 000
    Anna
    30 000
    Ben
    20 000
    Cleo
    10 000
    Unallocated
    40 000
    Fully diluted
    100 000
  3. 3Ben leaves
    Anna
    30 000
    Ben
    0
    Cleo
    10 000
    Unallocated
    60 000
    Fully diluted
    100 000
  4. 4Anna uses hers: 30 000 new shares in the register
    Anna
    0
    Ben
    0
    Cleo
    10 000
    Unallocated
    60 000
    Fully diluted
    70 000
  5. 5The board cancels the 60 000
    Anna
    0
    Ben
    0
    Cleo
    10 000
    Unallocated
    0
    Fully diluted
    10 000

Fully diluted is what the programme adds on top of the shares. It moves only when options become shares or the programme is made smaller. Giving options to a person only moves them from Unallocated to that person's row.

Vesting (earning the options over time) is in the option agreement, with its rules for someone who leaves. aktiebok.io does not calculate it. When the agreement says options are lost, you take them back.

Employee options are personal. The Transfer warrants form lists programmes of warrants only. When options pass from one employee to the next, take them back and give them out again.

Convertible loans

In plain words. Someone lends the company money, with the idea that the loan becomes shares instead of being repaid, usually at the next funding round and often at a discount to the round's price.

Two things go by this name.

  • A konvertibel in the law's sense is issued by a decision of the general meeting and filed with Bolagsverket within six months, like warrants. The lender has a right to swap the claim for shares on the terms decided.
  • A loan agreement with a promise to convert is an ordinary loan. Nothing is registered. At the next round the general meeting decides on a new issue to the lender, paid by setting off the loan against the price (a kvittningsemission).

Neither is entered as a programme. How many shares a loan becomes is often not known until the round it converts in, and a loan is not in a share register.

In real life, and in aktiebok.io

What happensWhat you do in aktiebok.io
01
What happensThe loan is agreed and paid in.
In aktiebok.ioNothing.
02
What happensYou plan the next round.
In aktiebok.ioSimulate, and add the loan under Convertible loans: the lender, the shares it converts into and the amount.
03
What happensThe loan converts.
In aktiebok.ioAdd entry, then Issue, to the lender, with the price per share the loan converted at. The shares go into the register the same day.
04
What happensBolagsverket registers the new shares.
In aktiebok.ioIn History, click Not registered on the entry and give the registration date and the share capital from the registreringsbevis.
05
What happensThe loan is repaid instead.
In aktiebok.ioNothing.
An example · Another company

An owner lends the company 500 000 kr, to convert at the next round at a 20 % discount.

  • The round is priced at 50 kr per share, so the loan converts at 40 kr into 12 500 shares.
  • Before the round, the simulator shows the round with and without the loan.
  • At the round, one Issue entry gives the lender 12 500 shares at 40 kr.

Questions that come up

Are options and warrants in the share register?
No. The printed register lists shares only. They show in the cap table's fully diluted columns and in their own list under it, Warrants and options, where you open a programme to see its holders.
Who can see them?
Everyone who can read the company's register sees the programmes and who holds what.
What does "fully diluted" count?
Every share, plus every share that warrants and options still running would give, including what is unallocated in a programme. Convertible loans are not counted, since they are not entered.
What is the Unallocated row?
The warrants or options of a programme that no holder has yet. It is not a shareholder: it has no shares, no votes and no value, and it belongs to no group. It is there so that the fully diluted total is the whole programme.
When do the new shares count?
In the register from the day the board allots them. In the share capital from the day Bolagsverket registers them.
We promised options but have not issued any warrants.
Enter the programme the same way. How the shares will be delivered does not change what you enter.
Someone left. Take back or cancel?
Take back when the warrants or options still exist and can go to someone else: they return to Unallocated and still count fully diluted. Say they were cancelled when the board has cancelled them: they leave the programme for good.
A holder used warrants in the last days, and we enter it afterwards.
Enter the Exercise dated on the day the shares were allotted. After the last day you can still enter it, as long as it is dated on or before that day.
We split the shares, or made a bonus issue.
Enter the split or the bonus issue and nothing else. Every programme that exists on its date is recalculated, as terms normally say: the number of warrants or options stays, each gives proportionally more or fewer shares, and the price per share changes the other way. The review says what happens to each programme before you confirm, and the programme's own page shows its terms before the change. Do not cancel a programme and enter it again for this.
We entered a programme wrong.
Reverse it from History and enter it again, like any entry. Entries that moved its warrants or options are reversed first.

This page is guidance on keeping the register right, following aktiebolagslagen (2005:551) as amended through SFS 2026:783. It is not legal or tax advice.

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