State Street Global Advisors Discloses Prologis Position in SEGRO-Related Form 8.3 Filing

State Street Global Advisors & Affiliates has published a Form 8.3 disclosure relating to Prologis, Inc. and SEGRO plc. The filing provides details of the investment manager’s position in Prologis and reports several share transactions carried out during the relevant dealing period.

The disclosure was made under Rule 8.3 of the UK Takeover Code. Such filings are designed to improve transparency when a company is connected with a possible or announced takeover situation.

Key Details of the Filing

The Form 8.3 document identifies Prologis, Inc. as the offeror or offeree to which the main securities position relates. SEGRO plc is also named as another party connected with the offer process.

• Discloser: State Street Global Advisors & Affiliates
• Relevant company: Prologis, Inc.
• Other party named: SEGRO plc
• Security: USD 0.01 common stock
• Position date: 6 August 2026
• Disclosure date: 7 August 2026
• Total disclosed interest: 56,996,974 securities
• Total percentage interest: 6.01181%
• Reported short position: None

State Street’s Prologis Holding

According to the filing, State Street reported ownership or control of 56,964,882 Prologis common shares. This represented approximately 6.00843% of the relevant securities.

The disclosure also included a cash-settled derivative position relating to 32,092 securities. This represented a further 0.00338% interest.

After combining the ordinary shareholding and the cash-settled derivative exposure, State Street’s total disclosed interest stood at 56,996,974 securities, equivalent to approximately 6.01181%.

No Short Position Reported

The filing did not show any short position in Prologis common stock. This means that the disclosure listed long interests but did not identify a corresponding short exposure in the relevant securities.

However, investors should remember that the position reflects the situation on a specific date. Institutional holdings may change as a result of fund rebalancing, portfolio transfers, client instructions or market transactions.

Change in the Reported Holding

State Street reported a change of 25,296 shares compared with its previous disclosure for dealings on 5 August 2026.

The filing explained that the change resulted from the transfer of shares out of a discretionary holding. This is different from a straightforward purchase or sale in the open market.

A discretionary holding may be adjusted as part of normal investment management activity. Therefore, the change should not automatically be interpreted as a strong signal that State Street is either increasing or reducing its long-term confidence in Prologis.

Reported Purchases

The Form 8.3 document listed several purchases of Prologis common stock. The reported transaction prices included approximately USD 139.14, USD 140.9065, USD 140.906493 and USD 141.00 per share.

The disclosed purchase quantities varied considerably. Some transactions involved only a few dozen shares, while others included several thousand shares.

The presence of multiple purchase prices can reflect different execution times, trading venues or portfolio allocations. Large asset managers often distribute transactions across various funds and investment mandates.

Reported Sales

State Street also disclosed sales of Prologis common stock during the same period. The reported sales included 1,400 shares at approximately USD 140.3094 per share.

Other reported sales included 7,000 shares, 36,198 shares, 10,224 shares and 495 shares at approximately USD 139.14 per share.

The reporting of both purchases and sales is not unusual for an institutional investment manager. Such activity may occur because of index adjustments, fund flows, risk controls, portfolio rebalancing or the allocation of trades between different accounts.

Why SEGRO plc Is Included

SEGRO plc is included because the filing relates to an offer situation involving Prologis and SEGRO. Regulatory disclosures often identify all relevant parties so investors can understand the ownership positions surrounding a possible corporate transaction.

The filing does not, by itself, confirm that a takeover has been completed. It also does not indicate that State Street has accepted an offer or agreed to support a particular transaction.

No Special Dealing Arrangements

State Street reported that it had no indemnity or other dealing arrangements relating to the relevant securities.

The disclosure also did not identify any formal or informal agreement concerning the voting rights attached to securities under an option or derivative.

In addition, the filing stated that no supplemental Form 8 covering open stock-settled derivative positions was attached.

What Investors Should Consider

The disclosure confirms that State Street is a significant institutional holder of Prologis. A position above 6% can attract market attention, particularly when the company is connected with a takeover or strategic transaction.

Nevertheless, a Form 8.3 filing should be viewed as a regulatory ownership update rather than an investment recommendation. The document mainly reports securities positions and dealings, not the complete financial or strategic background of a potential transaction.

Factors Worth Monitoring

• Official announcements from Prologis and SEGRO
• Any changes to the proposed transaction structure
• Shareholder voting requirements and responses
• Regulatory or competition-related developments
• Changes in interest rates and property valuations
• Additional Form 8.3 disclosures from major investors
• Further purchases, sales or transfers reported by State Street

Impact on Prologis and SEGRO

Both Prologis and SEGRO operate in the real estate sector, with exposure to logistics and industrial properties. Their performance can be influenced by warehouse demand, rental growth, occupancy levels, financing costs, development activity and changes in property values.

The Form 8.3 disclosure may increase investor interest in both companies, but it does not change their operating results. Investors should separately examine revenue, earnings, debt, asset values and management guidance before reaching a conclusion.

Market participants should also avoid assuming that institutional buying or selling automatically reflects a long-term view. Asset managers may trade shares for operational reasons that are unrelated to their assessment of the company’s future prospects.

Frequently Asked Questions

What is a Form 8.3 disclosure?

A Form 8.3 disclosure is a regulatory filing under Rule 8.3 of the UK Takeover Code. It reports relevant interests of 1% or more in securities connected with an offeror or offeree.

Who submitted the filing?

The filing was submitted by State Street Global Advisors & Affiliates.

How much Prologis stock did State Street disclose?

State Street disclosed 56,964,882 securities owned or controlled, along with cash-settled derivatives linked to 32,092 securities.

What was the total percentage interest?

The combined disclosed interest was approximately 6.01181% of the relevant Prologis securities.

Did State Street report a short position?

No short position was reported in the filing.

Why does the filing mention SEGRO plc?

SEGRO plc was identified as another party connected with the offer situation involving Prologis and SEGRO.

Does the filing confirm a takeover?

No. The filing only reports State Street’s relevant interests and dealings. It does not confirm that a takeover will be completed.

Did State Street agree to vote in favour of a deal?

The disclosure did not report a voting agreement, indemnity arrangement or other special dealing agreement linked to the relevant securities.

Should investors buy the shares?

This filing alone is not enough to make an investment decision. Investors should review official company announcements, valuation, financial results, transaction details and their personal risk tolerance.

Disclaimer: This article is provided for general information only and should not be considered financial, investment or trading advice. Always conduct independent research or consult a qualified financial adviser before making investment decisions.