diff --git a/extensions/openpower-pels/extended_user_data.hpp b/extensions/openpower-pels/extended_user_data.hpp
new file mode 100644
index 0000000..b0c0e88
--- /dev/null
+++ b/extensions/openpower-pels/extended_user_data.hpp
@@ -0,0 +1,160 @@
+#pragma once
+
+#include "section.hpp"
+#include "stream.hpp"
+
+namespace openpower::pels
+{
+
+/**
+ * @class ExtendedUserData
+ *
+ * This represents the Extended User Data section in a PEL.  It is free form
+ * data that the creator knows the contents of.  The component ID, version, and
+ * sub-type fields in the section header are used to identify the format.
+ *
+ *  This section is used for one subsystem to add FFDC data to a PEL created
+ *  by another subsystem.  It is basically the same as a UserData section,
+ *  except it has the creator ID of the section creator stored in the section.
+ *
+ * The Section base class handles the section header structure that every
+ * PEL section has at offset zero.
+ */
+class ExtendedUserData : public Section
+{
+  public:
+    ExtendedUserData() = delete;
+    ~ExtendedUserData() = default;
+    ExtendedUserData(const ExtendedUserData&) = default;
+    ExtendedUserData& operator=(const ExtendedUserData&) = default;
+    ExtendedUserData(ExtendedUserData&&) = default;
+    ExtendedUserData& operator=(ExtendedUserData&&) = default;
+
+    /**
+     * @brief Constructor
+     *
+     * Fills in this class's data fields from the stream.
+     *
+     * @param[in] pel - the PEL data stream
+     */
+    explicit ExtendedUserData(Stream& pel);
+
+    /**
+     * @brief Constructor
+     *
+     * Create a valid ExtendedUserData object with the passed in data.
+     *
+     * The component ID, subtype, and version are used to identify
+     * the data to know which parser to call.
+     *
+     * @param[in] componentID - Component ID of the creator
+     * @param[in] subType - The type of user data
+     * @param[in] version - The version of the data
+     */
+    ExtendedUserData(uint16_t componentID, uint8_t subType, uint8_t version,
+                     uint8_t creatorID, const std::vector<uint8_t>& data);
+
+    /**
+     * @brief Flatten the section into the stream
+     *
+     * @param[in] stream - The stream to write to
+     */
+    void flatten(Stream& stream) const override;
+
+    /**
+     * @brief Returns the size of this section when flattened into a PEL
+     *
+     * @return size_t - the size of the section
+     */
+    size_t flattenedSize()
+    {
+        return Section::flattenedSize() + sizeof(_creatorID) +
+               sizeof(_reserved1B) + sizeof(_reserved2B) + _data.size();
+    }
+
+    /**
+     * @brief Returns the section creator ID field.
+     *
+     * @return uint8_t - The creator ID
+     */
+    const uint8_t creatorID() const
+    {
+        return _creatorID;
+    }
+
+    /**
+     * @brief Returns the raw section data
+     *
+     * This doesn't include the creator ID.
+     *
+     * @return std::vector<uint8_t>&
+     */
+    const std::vector<uint8_t>& data() const
+    {
+        return _data;
+    }
+
+    /**
+     * @brief Get the section contents in JSON
+     *
+     * @param[in] creatorID - Creator Subsystem ID - unused (see the .cpp)
+     * @param[in] plugins - Vector of strings of plugins found in filesystem
+     *
+     * @return The JSON as a string if a parser was found,
+     *         otherwise std::nullopt.
+     */
+    std::optional<std::string>
+        getJSON(uint8_t creatorID,
+                const std::vector<std::string>& plugins) const override;
+
+    /**
+     * @brief Shrink the section
+     *
+     * The new size must be between the current size and the minimum
+     * size, which is 12 bytes.  If it isn't a 4 byte aligned value
+     * the code will do the aligning before the resize takes place.
+     *
+     * @param[in] newSize - The new size in bytes
+     *
+     * @return bool - true if successful, false else.
+     */
+    bool shrink(size_t newSize) override;
+
+  private:
+    /**
+     * @brief Fills in the object from the stream data
+     *
+     * @param[in] stream - The stream to read from
+     */
+    void unflatten(Stream& stream);
+
+    /**
+     * @brief Validates the section contents
+     *
+     * Updates _valid (in Section) with the results.
+     */
+    void validate() override;
+
+    /**
+     * @brief The subsystem creator ID of the code that
+     *        created this section.
+     */
+    uint8_t _creatorID;
+
+    /**
+     * @brief Reserved
+     */
+    uint8_t _reserved1B;
+
+    /**
+     * @brief Reserved
+     */
+    uint16_t _reserved2B;
+
+    /**
+     * @brief The section data
+     */
+    std::vector<uint8_t> _data;
+};
+
+} // namespace openpower::pels