diff --git a/crates/relicario-cli/src/commands/org.rs b/crates/relicario-cli/src/commands/org.rs
index e9ee641..6805d21 100644
--- a/crates/relicario-cli/src/commands/org.rs
+++ b/crates/relicario-cli/src/commands/org.rs
@@ -441,6 +441,73 @@ pub fn run_rotate_key(dir: &Path) -> Result<()> {
     Ok(())
 }
 
+pub fn run_transfer_ownership(dir: &Path, member_id_prefix: &str, keep_owner: bool) -> Result<()> {
+    let vault = crate::org_session::open_org_vault(Some(dir))?;
+    let caller = vault.current_member()?;
+    if !caller.role.can_manage_owners() {
+        anyhow::bail!("only an owner can transfer ownership");
+    }
+    let mut members = vault.load_members()?;
+    let target_id = resolve_member_id(&members, member_id_prefix)?;
+    if target_id == caller.member_id {
+        anyhow::bail!("you are already the owner");
+    }
+    // Promote the target to Owner.
+    {
+        let target = members.find_by_id_mut(&target_id)
+            .ok_or_else(|| anyhow::anyhow!("member not found"))?;
+        target.role = OrgRole::Owner;
+    }
+    // Real transfer: also demote the CALLER to Admin, unless --keep-owner was
+    // passed (explicit co-ownership). The spec says "owner → another member",
+    // so demotion is the default.
+    if !keep_owner {
+        if let Some(me) = members.find_by_id_mut(&caller.member_id) {
+            me.role = OrgRole::Admin;
+        }
+    }
+    vault.save_members(&members)?;
+
+    let mode = if keep_owner { "co-ownership (caller kept owner)" } else { "caller demoted to admin" };
+    let commit_msg = format!(
+        "org: transfer ownership to {} ({mode})\n\nRelicario-Actor: {} {}\nRelicario-Action: ownership-transfer\nRelicario-Member: {}",
+        target_id.as_str(), caller.display_name, caller.member_id.as_str(), target_id.as_str()
+    );
+    crate::org_session::org_git_run(&vault.root, &["add", "members.json"], "git add")?;
+    crate::org_session::org_git_run(&vault.root, &["commit", "-m", &commit_msg], "git commit")?;
+    if keep_owner {
+        println!("Ownership shared with {} (you remain an owner).", target_id.as_str());
+    } else {
+        println!("Ownership transferred to {} (you are now an admin).", target_id.as_str());
+    }
+    Ok(())
+}
+
+pub fn run_delete_org(dir: &Path, confirm: bool) -> Result<()> {
+    let vault = crate::org_session::open_org_vault(Some(dir))?;
+    let caller = vault.current_member()?;
+    if !caller.role.can_manage_owners() {
+        anyhow::bail!("only an owner can delete the org");
+    }
+    if !confirm {
+        anyhow::bail!("refusing to delete org without --confirm");
+    }
+    let commit_msg = format!(
+        "org: delete org\n\nRelicario-Actor: {} {}\nRelicario-Action: org-delete",
+        caller.display_name, caller.member_id.as_str()
+    );
+    // Remove org files (the git history is retained as the audit record).
+    for f in ["org.json", "members.json", "collections.json", "manifest.enc"] {
+        let _ = fs::remove_file(vault.root.join(f));
+    }
+    let _ = std::fs::remove_dir_all(vault.root.join("items"));
+    let _ = std::fs::remove_dir_all(vault.root.join("keys"));
+    crate::org_session::org_git_run(&vault.root, &["add", "-A"], "git add")?;
+    crate::org_session::org_git_run(&vault.root, &["commit", "-m", &commit_msg], "git commit")?;
+    println!("Org deleted (git history retained as audit record).");
+    Ok(())
+}
+
 pub fn run_status(dir: &Path) -> Result<()> {
     let root = crate::org_session::org_dir(Some(dir))?;
 
diff --git a/crates/relicario-cli/src/main.rs b/crates/relicario-cli/src/main.rs
index 639c5be..3f95330 100644
--- a/crates/relicario-cli/src/main.rs
+++ b/crates/relicario-cli/src/main.rs
@@ -438,7 +438,77 @@ pub(crate) enum OrgCommands {
         #[arg(long)]
         name: String,
     },
-    // Admin + item subcommands are added by later tasks (B10-B14).
+    /// Add a member to the org.
+    AddMember {
+        /// OpenSSH ed25519 public key of the new member.
+        #[arg(long)]
+        key: String,
+        /// Display name.
+        #[arg(long)]
+        name: String,
+        /// Role: owner, admin, or member.
+        #[arg(long, default_value = "member")]
+        role: String,
+    },
+    /// Remove a member from the org.
+    RemoveMember {
+        /// Member ID prefix.
+        member_id: String,
+    },
+    /// Change a member's role.
+    SetRole {
+        member_id: String,
+        role: String,
+    },
+    /// Create a collection.
+    CreateCollection {
+        slug: String,
+        #[arg(long)]
+        name: String,
+    },
+    /// Grant a member access to a collection.
+    Grant {
+        member_id: String,
+        collection: String,
+    },
+    /// Revoke a member's access to a collection.
+    Revoke {
+        member_id: String,
+        collection: String,
+    },
+    /// Rotate the org master key (run after removing a member).
+    RotateKey,
+    /// Transfer ownership to another member (owner only). By default the caller
+    /// is demoted to admin; pass --keep-owner for explicit co-ownership.
+    TransferOwnership {
+        member_id: String,
+        /// Keep the caller as an owner too (co-ownership) instead of demoting.
+        #[arg(long)]
+        keep_owner: bool,
+    },
+    /// Delete the org (owner only; requires --confirm).
+    DeleteOrg {
+        #[arg(long)]
+        confirm: bool,
+    },
+    /// Show org members and collections.
+    Status,
+    /// Query the org audit log.
+    Audit {
+        #[arg(long)]
+        since: Option<String>,
+        #[arg(long)]
+        member: Option<String>,
+        #[arg(long)]
+        collection: Option<String>,
+        #[arg(long)]
+        action: Option<String>,
+        /// Output format: `table` (default) or `json`.
+        #[arg(long, default_value = "table")]
+        format: String,
+    },
+    // Item subcommands (Add/Get/List/Edit/Rm/Restore/Purge) are added by
+    // Tasks B10–B13, which extend this enum.
 }
 
 fn main() -> Result<()> {
@@ -481,13 +551,71 @@ fn main() -> Result<()> {
                 OrgCommands::Init { name } => {
                     let d = crate::org_session::org_dir(dir_path)?;
                     commands::org::run_init(&d, &name)?;
-                    Ok(())
                 }
+                OrgCommands::AddMember { key, name, role } => {
+                    let d = crate::org_session::org_dir(dir_path)?;
+                    let role = parse_org_role(&role)?;
+                    commands::org::run_add_member(&d, &key, &name, role)?;
+                }
+                OrgCommands::RemoveMember { member_id } => {
+                    let d = crate::org_session::org_dir(dir_path)?;
+                    commands::org::run_remove_member(&d, &member_id)?;
+                }
+                OrgCommands::SetRole { member_id, role } => {
+                    let d = crate::org_session::org_dir(dir_path)?;
+                    let role = parse_org_role(&role)?;
+                    commands::org::run_set_role(&d, &member_id, role)?;
+                }
+                OrgCommands::CreateCollection { slug, name } => {
+                    let d = crate::org_session::org_dir(dir_path)?;
+                    commands::org::run_create_collection(&d, &slug, &name)?;
+                }
+                OrgCommands::Grant { member_id, collection } => {
+                    let d = crate::org_session::org_dir(dir_path)?;
+                    commands::org::run_grant(&d, &member_id, &collection)?;
+                }
+                OrgCommands::Revoke { member_id, collection } => {
+                    let d = crate::org_session::org_dir(dir_path)?;
+                    commands::org::run_revoke(&d, &member_id, &collection)?;
+                }
+                OrgCommands::RotateKey => {
+                    let d = crate::org_session::org_dir(dir_path)?;
+                    commands::org::run_rotate_key(&d)?;
+                }
+                OrgCommands::TransferOwnership { member_id, keep_owner } => {
+                    let d = crate::org_session::org_dir(dir_path)?;
+                    commands::org::run_transfer_ownership(&d, &member_id, keep_owner)?;
+                }
+                OrgCommands::DeleteOrg { confirm } => {
+                    let d = crate::org_session::org_dir(dir_path)?;
+                    commands::org::run_delete_org(&d, confirm)?;
+                }
+                OrgCommands::Status => {
+                    let d = crate::org_session::org_dir(dir_path)?;
+                    commands::org::run_status(&d)?;
+                }
+                OrgCommands::Audit { since, member, collection, action, format } => {
+                    let d = crate::org_session::org_dir(dir_path)?;
+                    commands::org::run_audit(&d, since.as_deref(), member.as_deref(),
+                        collection.as_deref(), action.as_deref(), &format)?;
+                }
+                // Item dispatch arms (Add/Get/List/Edit/Rm/Restore/Purge) added by
+                // Tasks B10–B13.
             }
+            Ok(())
         }
     }
 }
 
+fn parse_org_role(s: &str) -> anyhow::Result<relicario_core::OrgRole> {
+    match s {
+        "owner" => Ok(relicario_core::OrgRole::Owner),
+        "admin" => Ok(relicario_core::OrgRole::Admin),
+        "member" => Ok(relicario_core::OrgRole::Member),
+        other => anyhow::bail!("unknown role `{other}` — use owner, admin, or member"),
+    }
+}
+
 /// Check for test passphrase override (debug builds only; stripped from release).
 #[cfg(debug_assertions)]
 pub(crate) fn test_passphrase_override() -> Option<String> {