The Money Maze TMM Nº 028

Mergers and Acquisitions Explained for JSE Investors

Length: 7 min

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Mergers and acquisitions explained: synergies, premiums, cash vs share deals, hostile bids and delistings, with SABMiller, Massmart and Lonmin examples.

Show notes

Mergers and acquisitions, or M&A, sound like Sandton boardroom talk. Really, it’s corporate dating and marriage, with the occasional messy divorce. Here’s what it means when your shares get caught up in one.

By The Money Maze | Listen to the episode: Spotify

Every few months a SENS announcement drops with words like “firm intention”, “scheme” or “cautionary”. Your share price jumps or tanks, and you’re left wondering whether to celebrate. This one’s the decoder ring.

What is a merger?

A merger is when two companies combine into one. Think marriage. Sometimes it’s love, sometimes the families arranged it, and sometimes neither company wanted to be alone anymore.

South Africa’s most famous example: SABMiller and AB InBev. SABMiller grew from South African Breweries into a global giant. AB InBev, owner of Budweiser and Stella Artois, was even bigger. The deal, completed in 2016, created the world’s biggest brewer. Two heavyweights who stopped fighting and shared a Castle Lite instead. Technically AB InBev acquired SABMiller, which shows how blurry the line between “merger” and “acquisition” can be.

The theory behind any merger is that the two together are worth more than apart. Economists call it synergy. In plain terms, it’s hoping one plus one equals three.

What is an acquisition?

An acquisition is simpler: one company buys another.

It can be friendly, with flowers, chocolates and a big cash offer, agreed with the target’s board. Or hostile, when the buyer goes straight to shareholders over the board’s objections. That’s the unwanted cousin who arrives at the braai, refuses to leave and eventually eats your chops anyway.

Walmart is a good local case. It bought a controlling stake in Massmart in 2011, promising lower prices and global supply-chain muscle. In 2022 it bought out the remaining shareholders in a R6.4 billion deal, and Massmart was delisted from the JSE.

Sibanye-Stillwater’s takeover of Lonmin, completed in June 2019, was less romance, more rescue. Lonmin, a struggling platinum producer, was bought in an all-share deal, and Lonmin shareholders received Sibanye-Stillwater shares.

Why companies do M&A

  • Growth: faster than building from scratch. Want more burger outlets? Open 100 yourself, or buy a chain.
  • Synergies: cost savings from sharing offices, systems and buying power. Two families moving in together and realising they need only one streaming subscription.
  • Market power: fewer competitors can mean more pricing power, which is exactly why the Competition Commission reviews big deals.
  • Diversification: spreading risk across products or regions. Planting mielies and cabbages in the same garden.

How M&A affects shareholders

Share price reactions

The target’s share price usually jumps, because buyers almost always pay a premium over the market price to convince shareholders to sell. The buyer’s share price often wobbles, as the market worries about debt, overpaying or whether management has bitten off more than it can chew.

Cash, shares or both

You can be paid in cash, in shares of the buyer, or a mix. Cash is simple: you know what you’re getting. Shares mean you become a shareholder in the buyer, so the value of your payout moves with its share price.

Schemes, offers and delisting

On the JSE, many takeovers use a scheme of arrangement, which needs 75% shareholder approval and then binds everyone. Others are general offers, where each shareholder decides. Either way, if the buyer gets everything, the target usually delists, and you can’t trade it anymore.

When companies split up

Not all corporate surgery is about joining. Old Mutual’s “managed separation” around 2018 split the group, with Quilter listed separately in London, a large slice of the Nedbank stake unbundled to shareholders, and Old Mutual Limited listed in Johannesburg. A reverse wedding, with everyone keeping their own Tupperware. That’s an unbundling, and it can unlock value when the parts are worth more than the whole.

The risks: why many deals disappoint

Studies and experience say plenty of deals fail to deliver. Cultures clash, costs spiral, promised synergies never show up, and buyers overpay in the excitement of the chase. It’s like moving in with your partner and only then discovering they leave the toothpaste cap off and hog the duvet.

For investors, that means a big deal isn’t automatically good news, even if the announcement is full of words like “transformational”.

Questions to ask when a deal is announced

  1. What premium is being offered, and over what reference price?
  2. Cash, shares or both? What’s the buyer’s share price risk?
  3. How is the buyer funding it? Lots of new debt?
  4. What approvals are needed: shareholders, Competition Commission, regulators?
  5. If you hold the target, do you want to own the buyer?

Stokvel Starter Pack

  • Merger: two companies combine, like a marriage.
  • Acquisition: one company buys another.
  • Synergy: the hope that one plus one equals three.
  • Premium: what a buyer pays above the market price.
  • Hostile bid: an offer the target’s board doesn’t support.
  • Unbundling: splitting a company into separate pieces.

Takeaway: M&A usually rewards the target’s shareholders first. Whether it rewards the buyer’s shareholders depends on price, debt and execution, and the jury often stays out for years.

Want the full braai version? Listen on Spotify. And if you’d like the Maze in your inbox, join the free Maze Mail list.

More from The Money Maze

Sources

  1. Walmart completes R6.4bn purchase of Massmart, Moneyweb, Nov 2022.
  2. Sibanye-Stillwater: completion of the acquisition of Lonmin, Sibanye-Stillwater filing, Jun 2019.
  3. Corporate action timetables (Form H1), JSE Limited, Oct 2025.

This is not financial advice.

Transcript

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0:00 Welcome to the Mazda if, the podcast for South African retail investors who want to stop feeling like they're drowning in jargon and start navigating the markets like someone that actually knows what they're doing. Your host, Jay. And today we're tackling the world of mergers and acquisitions, also known as M and A. It sounds like something you would year in Ascent and boardroom, but it's basically just corporate dating and marriage with the occasional messy divorce thrown in. So what is a merger?

0:27 Well a merger happens when two companies decide to combine, they become one. Think of it like a marriage. Sometimes it's out of love, sometimes it's because the family is thought it would be a good idea, and sometimes it's just because neither company wants to be alone anymore. In South Africa one of the biggest examples was is Seb Mueller merging. Was AB InBev back in I think it was 2016. At the time SAB Muller was a local giant born out of the Shebeen culture and Township Taverns, but by then it had already spread globally.

0:58 AB InBev was even bigger with brands like Budweiser and Stella. When the two tied the knot it created the largest beer company in the world. That is like 2 champions in a boxing ring suddenly deciding to stop fighting and rather share a castle light. The idea behind the merger is usually that the two companies together are worth more than they are separately. Economist calls this synergy, but in plain terms it's just the hope that 1 + 1 = 3. An acquisition is slightly simpler. One company buys another, end of story. Sometimes it's friendly, like being wood with flowers, chocolates and a big cash offers. Sometimes at hostel, like when an unwanted cousin shows up at the Bri, refuses to leave and eventually eats all your chops anyway.

1:43 Take Walmart acquisition of Massmart. Walmart came in with deep pockets, bought a controlling stake and promised S Africans lower prices. Whether that worked out is still up for debate, but the move showed how global giants can buy local players to get instant market access. Another example is Sibanye Stillwater buying Lonmin, which gave Sibanye a stronger position in the platinum sector. That one was less about romance and more about survival. London was struggling and Sibanye stepped in with the cash.

2:15 Think of it like rescuing. And Mighty fell asleep on the beach in Durban after too many black labels. Not pretty, but necessary. So why do companies do this? Well, there are a few big reasons why companies could go down the Imani path #1 would be gross. It's faster and building something from scratch. If you want to sell more burgers, you can either open 100 new burger branches yourself or you can just buy spur and be done with it. But two would be synergy.

2:43 This is the corporate word for cost saving and efficiency. Two companies can share offices, reduce duplicate staff and buy things in bulk. It's like 2 families moving in together and realising they only need one Dstv subscription #3 would be market power. Bigger companies can dominate their industries. If you reduce competition, you can increase your pricing power. It's like being the only Bury stand at the rugby. You can charge whatever you like because the other guy got kicked out by security.

3:12 Number 4 would be diversification. Sometimes it's just about spreading risk. A mining company might buy a renewable energy firm to hedge against the future. Kind of like planting millies and cabbage in the same garden. If one crop fails, you've got another. So how does this affect investors? This is where it gets a little bit more spicy for you and me as the average retail investor.

3:36 You've got share price reactions. Usually the company being bought sees its share price jump. Why? Because investors know the buyer will have to pay a premium. On the other side, the buyers share price sometimes drops because the market starts worrying about costs, debt or whether management is bitten off more than they can chew. Then you've got payment methods. Acquisitions can be paid for in cash with shares or a combination of the two. If you're a shareholder in the target company, you might get bought out at a set price, or you might end up holding shares in the bigger combined company.

4:11 Then delistings. Sometimes once a company is bought, it gets delisted from the JC. That means retail investors cannot trade it anymore because it is tucked away inside the new parent company. So let's look at some of the JSE greatest hits in merger and acquisitions. So we'll bring a bit closer to home with a few examples. Walmart and Massmart a global retail try and steps into Africa.

4:35 The idea was to bring Walmart low prices and supply chain efficiency to South Africa. The reality has been slightly more mixed with labour unions and competition authorities putting up a huge fight. Sibanye, Stillwater and Lonmin a bold move in the platinum space. Longman was struggling financially and with labour unrest, Sibanye soon opportunity to consolidate and strengthen its global platinum positioning.

5:00 Even in the engineering and project management world, M and I plays a big role. DRI Global well known South African company in mining and mineral projects, has been through listings, restructurings and is now in the process of being bought out. It shows that it is not only the minds themselves that get merged or acquired, but also companies that design and run the projects. The risks are the same, integration headaches, shifting ownership priorities and whether the deal really delivers the value the investors are promised.

5:31 Then you've got old mutuals break up. Not all M and A is about coming together. Sometimes it's about splitting up. Old Mutual decided to unbundle into different businesses, listing them separately. This was like a reverse wedding where everyone's keeping their own cutlery and their Tupperware. So let's look at the risks. Of course, it's not all sunshine and synergies, meaning mergers and acquisitions fail, cultures clash, cost spiral and those promised savings never actually materialise.

6:00 It's like moving in with your partner and only then realising they leave the toothpaste cap off and hog Devi. For investors, that means not every deal is a good deal. Sometimes companies overpay, sometimes debt becomes crushing and sometimes management just cannot make it work. That is why markets often react with caution when a big deal is announced. And let's get to your stock fell starter back of stock lingo for this episode.

6:27 A merger is when two companies combined, kind of like a merit. An acquisition is when one company buys another, like takeover motives or growth, synergy, market power and diversification. The risks are culture clashes, date and overpaying. For investors like you and me, the average retail investor, the impact is usually a jump in a target share price, some turbulence in the buyer share price, and maybe a dealer's thing if the company disappears into its new parent. That's it for this episode.

6:59 And while my jokes may be cheaper than a mother Arti clearance sale, remember this is not financial advice. Please do your own research and speak to a licensed advisor and I'll catch you on the next episode of The Money Mice. Same time, same place, and same sarcasm.

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