The over the wall process in finance is the controlled handoff that moves someone from a financial firm’s public side to its private side so they can receive material nonpublic information (MNPI) about a specific company or transaction. The name comes from the information barrier that separates employees who trade securities from those handling confidential corporate deals. Once you are brought over that wall, federal insider trading law applies to you, and you cannot trade in the affected securities until the information is released to the public.
Firms use this mechanism for deals like follow-on stock offerings and private investments in public equity (PIPEs), where a small group of investors needs to see confidential data before anything is announced.
Why Firms Bring Investors Over the Wall
Some transactions cannot get done without showing confidential information to a handful of potential buyers first. In a confidentially marketed offering, an issuer wants to gauge investor appetite before publicly announcing it is raising capital. A cold announcement met with a lukewarm reception can tank the stock price and doom the offering. By quietly approaching a small group of institutional investors first, the company and its bankers can partially or fully sell the deal before the market knows it is happening.
The same logic drives PIPE transactions, where investors negotiate terms based on non-public financial details. Wall-crossing gives those investors enough information to make an informed commitment while keeping the rest of the market on equal footing until public disclosure.
None of this would be legal without a specific carve-out in Regulation FD. Reg FD generally bars public companies from sharing MNPI with selected investors or analysts unless they simultaneously disclose it to everyone. The rule permits selective disclosure when the recipient expressly agrees to keep the information confidential.1eCFR. 17 CFR 243.100 – General Rule Regarding Selective Disclosure That confidentiality agreement is the legal foundation of the whole process, and it does double duty: it satisfies Reg FD, and it creates the duty of trust that makes any later trading actionable under the misappropriation theory of insider trading.2Government Publishing Office (GPO). 17 CFR 240.10b-5 – Employment of Manipulative and Deceptive Devices
What Happens When You Are Brought Over
Before anyone is contacted, the compliance department assembles a documentation package. It identifies the target company, the specific confidential information involved (upcoming earnings data, merger terms, offering details), and the expected duration of the restriction. Those data points define exactly what the wall-crossed individual will know and how long they will be barred from trading.
The conversation itself follows a standardized wall-crossing script. A compliance officer or senior banker walks through the identity of the issuer, the nature of the MNPI to be shared, the dates of disclosure, which personnel are authorized to receive the information, and the trading restrictions that will apply. The investor must sign a confidentiality and no-trade agreement, or agree to it electronically, before any deal details are shared.
You can decline. This is a genuine choice built into the script: the banker explains that confidential information is available and asks whether you are willing to be restricted. An investor who declines stays on the public side, keeps full trading freedom, and simply does not participate in the pre-marketing. They can still buy in if the deal later becomes a public offering; they just won’t have the early look.
If you accept, the officer records your consent through oral confirmation on a recorded call or a signed electronic agreement and logs it into the firm’s centralized tracking system. You then receive an automated notification confirming your placement on a restricted list for the subject company’s securities. The firm’s trade surveillance system updates in real time, and any attempted transactions in that ticker are caught automatically.
What You Can and Cannot Do Once Over the Wall
Federal insider trading law now applies to you. Section 10(b) of the Securities Exchange Act and SEC Rule 10b-5 prohibit anyone in possession of MNPI from trading the relevant company’s securities.3Office of the Law Revision Counsel. 15 USC 78j – Manipulative and Deceptive Devices Under the misappropriation theory, even someone with no relationship to the issuing company can be liable if they received MNPI through a breach of a duty of confidence, which is exactly the duty the wall-crossing agreement creates.2Government Publishing Office (GPO). 17 CFR 240.10b-5 – Employment of Manipulative and Deceptive Devices
The restrictions extend past your own trading account. Passing MNPI to someone else who then trades, known as tipping, creates liability for both the tipper and the recipient. A wall-crossed individual who shares deal details with a colleague or family member who then buys or sells has exposed everyone in that chain to prosecution.
Does a Pre-Existing 10b5-1 Plan Help
One of the most common questions in wall-crossing situations is whether a pre-existing trading plan protects you. Rule 10b5-1 provides an affirmative defense to insider trading charges if, before becoming aware of MNPI, you had entered into a binding contract to trade, given instructions to trade, or adopted a written trading plan. The plan must have specified the amount, price, and date of the trade, or used a formula or algorithm that removed your discretion, and you cannot have altered the plan after receiving the MNPI.2Government Publishing Office (GPO). 17 CFR 240.10b-5 – Employment of Manipulative and Deceptive Devices
In theory, trades executed under a qualifying 10b5-1 plan adopted before the wall-cross could proceed even while you possess MNPI. In practice, most firms suspend all trading in the restricted security for wall-crossed individuals regardless of any pre-existing plan. The compliance risk of allowing the trade and then having to defend the plan’s validity after the fact is too high. Do not count on your 10b5-1 plan saving a trade once you have agreed to be brought over.
Getting Back to the Public Side
You return to the public side only when the MNPI you received stops being nonpublic. That happens through a cleansing disclosure: the company releases the confidential information publicly so every investor has access to it at the same time. The usual methods are a press release or an SEC Form 8-K.4Securities and Exchange Commission. Form 8-K Current Report
If the deal goes through, cleansing happens naturally with the public announcement of the offering or transaction. If the deal falls apart, the company still has to release enough information to cleanse the wall-crossed investors, often through a statement that confidential negotiations occurred and have ended, without necessarily revealing every detail. The timing is typically negotiated upfront in the confidentiality agreement, and PIPE investors often insist on contractual deadlines requiring the issuer to cleanse within a specified period if the deal collapses.
Once the information is public, the issuer’s counsel or lead banker notifies compliance that cleansing is complete. Compliance verifies that the disclosure actually covers every data point shared during the wall-crossing period. If it does, your name comes off the restricted list, you receive formal notification that trading privileges are restored, and the firm’s tracking system closes the audit trail for that engagement.
Penalties for Trading on Wall-Crossed Information
The consequences of trading on MNPI received through a wall-cross are severe. Criminally, anyone who willfully violates the Securities Exchange Act’s insider trading prohibitions faces up to 20 years in prison and fines up to $5 million for an individual or $25 million for a firm.5Office of the Law Revision Counsel. 15 USC 78ff – Penalties
Civil penalties can hit even harder. The SEC can seek a penalty of up to three times the profit gained or loss avoided through the illegal trade. That treble-damages calculation applies not only to the person who traded but also to any controlling person who failed to prevent the violation, meaning a firm’s supervisors and compliance leadership can face personal civil liability up to the greater of $1 million or three times the illicit profit, even if they did not trade.6Office of the Law Revision Counsel. 15 USC 78u-1 – Civil Penalties for Insider Trading
Beyond monetary penalties, the SEC can seek equitable relief including disgorgement of profits, injunctions barring future securities industry participation, and officer-and-director bars. For someone whose career depends on staying in the securities business, a permanent industry bar can be more damaging than the fine.
The Firm’s Role Behind Your Wall-Cross
The responsibility for maintaining information barriers does not fall on you alone. Section 15(g) of the Securities Exchange Act requires every registered broker-dealer to establish, maintain, and enforce written policies and procedures reasonably designed to prevent the misuse of MNPI.7Office of the Law Revision Counsel. 15 USC 78o – Registration and Regulation of Brokers and Dealers That is why the process you go through is so scripted and heavily logged: the firm has to prove, on demand, that it ran a clean sequence from wall-cross to cleansing for every person it brought over. FINRA guidance directs firms to document the method for deciding when proprietary trading should be restricted and to keep records showing when each security was added to and removed from the restricted and watch lists.8FINRA. Notice to Members 91-45 – NASD/NYSE Joint Memo on Chinese Wall Policies and Procedures When you sign the confidentiality agreement, you are stepping into that documented chain, and everything you do with the information becomes part of the record the firm and regulators will later review.