If condition met, return all values from column

Will you please attach a sample Excel workbook? We are not able to work with or manipulate a picture of one and nobody wants to have to recreate your data from scratch.

1. Make sure that your sample data are REPRESENTATIVE of your real data. The use of unrepresentative data is very frustrating and can lead to long delays in reaching a solution.

2. Make sure that your desired results are also shown (mock up the results manually).

3. Make sure that all confidential data is removed or replaced with dummy data first (e.g. names, addresses, E-mails, etc.).

4. Try to avoid using merged cells as they cause lots of problems.

Unfortunately the attachment icon doesn't work at the moment, so to attach an Excel file you have to do the following: just before posting, scroll down to Go Advanced and then scroll down to Manage Attachments. Now follow the instructions at the top of that screen.

Please pay particular attention to point 2 (above): without an idea of your intended outcomes, it is often very difficult to offer appropriate advice.

Why does the desired outcome miss out London's C1 result when it is there for ABC? You said this:

What I’m trying to do is identify all companies that have completed a specified outcome (a C1) and return all additional outputs the company have achieved.

This proposed solution employs a helper column (D) on the Source Data sheet, which may be hidden for aesthetic purposes, using:

Formula:

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The table on the Desired Outcome sheet is populated using:

Formula:

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Let us know if you have any questions.

You're Welcome and thank you for the feedback.
In this case the INDEX function returns the values indicated by the AGGREGATE function. So in column A it will display the first, second, third etc company name that has a 'Y' in column D on the 'Source Data' sheet. One good way to see what a formula is doing is to select a cell containing the formula and run the Evaluate Formula tool. In this case I would suggest selecting cells A4 and C4 (perhaps C5) on the Desired Outcome sheet.
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