Piper Sandler ($PIPR) has built its advisory business through a decade of acquisitions, but every deal it has completed was a specialist firm far smaller than itself, and where terms were disclosed, a large share of the payment was restricted stock and key people were signed up at or before closing. Perella Weinberg ($PWP) broke that pattern on size, and the talks failed on exactly the point the earlier deals had secured first: the partners' commitment. The talks ended on October 14, 2026 after an "insufficient number of partners agreed to the binding terms," according to the Financial Times via Investing.com. Our article on the strategic rationale explains what Piper wanted. This one looks at what Piper has actually bought before, using its own press releases and SEC filings, and at why Perella was a different kind of deal.

The verified record

Each row below comes from a Piper release or SEC filing linked in the text. "Completed" is the closing date where a filing gives one, otherwise the date the completion was announced.

Sources: Simmons announcement and completion; Weeden announcement and completion; Sandler O'Neill announcement, closing 8-K and completion release; Valence announcement and completion; DBO announcement, completion and the acquisitions note in Piper's filings; Aviditi announcement and completion. The same SEC acquisitions note also lists two smaller 2022 purchases: Cornerstone Macro Research ($34.1 million, closed February 4, 2022) and Stamford Partners, a specialist investment bank (closed June 10, 2022, price not stated).

Weeden is the odd one out: it was an execution broker-dealer founded in 1922, bought for trading scale rather than advisory. Every other deal on the list added an advisory specialty Piper did not have or wanted to deepen.

Sandler O'Neill: the template

The 2019 Sandler O'Neill agreement is the closest thing Piper has done to a merger of peers, and it is the model for how the firm protects the asset it is buying. The July 9, 2019 announcement priced the deal at $485 million, based on $100 million of tangible book value at closing, and stated that all Sandler O'Neill partners had signed employment agreements. On top of the price, Piper set aside a $115 million retention pool, mostly restricted stock. The closing 8-K confirms completion on January 3, 2020, with 1,568,670 restricted shares issued to employee partners at $73.0890 each.

Three features matter for the Perella comparison:

1. The partners signed first. Employment agreements were in place at announcement, not negotiated afterwards.
2. Much of the money was deferred. $135 million of the $485 million (27.8%) was restricted consideration, and the $115 million retention pool equalled another 23.7% of the price. Bankers who left early would forfeit unvested stock.
3. The name went on the door. The combined firm became Piper Sandler Companies, trading as PIPR, as the January 6, 2020 completion release announced.

The smaller deals followed the same pattern. Simmons came with key professionals' employment agreements effective at closing, a further $21 million for retention, and a stated intention to keep operating under the Simmons brand. DBO's sellers received 368,957 restricted shares valued at $39.9 million, separate from the $66.3 million price, according to the SEC note: retention equal to about 60% of the purchase price.

Why Perella was a different animal

Size is the first difference. On Financial Modeling Prep market data, October 15, 2026 close, Perella's market value is about $1.45 billion against Piper's $4.56 billion. Divide one by the other and Perella is 31.9% of Piper's size. That is not a bolt-on.

Two more comparisons make the same point:

• Perella's market value today is about 3.0 times the $485 million Piper paid for Sandler O'Neill, its largest deal ($1,454 million divided by $485 million).
• Add up every price Piper disclosed in the table (139 + 42 + 485 + 66.3) and the total is about $732 million. Perella's market value is roughly twice that, before any takeover premium.

Structure is the second difference. Reuters reported the talks were for an all-stock merger. Using today's market values and assuming, for illustration only, no premium, Perella holders would have owned about 24% of the combined company (1.45 divided by 6.02). That is a large block of new shareholders whose wealth depends on the same partners who declined to sign.

The third difference is history. Perella was not a private partnership waiting for a buyer; it is already a public company. It became public through a business combination with a blank-check company, FinTech Acquisition Corp. IV, which closed on June 24, 2021, with shares beginning to trade on Nasdaq as PWP on June 25, 2021, according to the company's release filed with the SEC. Reuters valued that 2021 deal at roughly $975 million. Financial Modeling Prep's profile lists an IPO date of November 24, 2020, which does not match the June 2021 combination; for when PWP shares began trading, the SEC-filed release is the authority. Perella's partners already own publicly traded stock, so a new multi-year lock-up asked them to give up flexibility they already had.

Put the three together and the outcome makes sense. Piper's earlier deals, Sandler above all, secured the people at announcement. With Perella, the people were the condition that could not be met.

A common mistake: treating a good track record as a guarantee

It is easy to reason that a buyer with six or more completed deals knows how to close the next one. The record shows a skill at a particular kind of deal: small, specialist, partner-owned firms where retention could be bought with cash and restricted stock. It says much less about a target almost a third of the buyer's size, already public, paid for in shares. When judging a serial acquirer, ask whether the next deal resembles the last ones, not merely whether there were last ones. For how the two stocks have traded since the talks ended, see our follow-up on PWP and PIPR after the talks.

A checklist for judging Piper's next deal

• Is the target small relative to Piper? Every completed deal in the table had a disclosed price below $500 million, or no price disclosed at all.
• Have the key partners signed employment agreements at announcement, as Sandler's did?
• How much of the price is restricted or deferred, and how large is the separate retention pool?
• Does it add a specialty (energy, chemicals, technology, private capital) rather than overlap with what Piper already does?
• Is it paid in cash, or in Piper shares that dilute existing holders?

Follow the sector in the Markets section and on the front page. This article is for information only and is not investment advice.

FAQ

How much did Piper pay for Sandler O'Neill?

$485 million: $350 million in cash at closing and $135 million in restricted consideration, mostly restricted stock, plus a separate $115 million retention pool. The deal closed on January 3, 2020.

What other firms has Piper Sandler acquired?

Verified from its releases and filings: Simmons & Company International (2016), Weeden & Co. (2019), The Valence Group (2020), Cornerstone Macro Research and Stamford Partners (2022), DBO Partners (2022) and Aviditi Advisors (2024).

How did Perella Weinberg go public?

Through a business combination with FinTech Acquisition Corp. IV that closed on June 24, 2021. PWP shares began trading on Nasdaq the next day.

How big was Perella relative to Piper?

At the October 15, 2026 close, Perella's market value of about $1.45 billion was 31.9% of Piper's $4.56 billion.