Here is the guarantee language. This is outlined on page 21 onward of the prospectus for cusip#52520B 206:
"DESCRIPTION OF THE GUARANTEE"
The guarantee to be executed and delivered by Lehman Brothers Holdings for the benefit of the holders of preferred securities will be qualified as an indenture under the Trust Indenture Act of 1939. The Chase Manhattan Bank will act as guarantee trustee for purposes of the Trust Indenture Act.
The terms of the guarantee will include those set forth in the guarantee and those made part of the guarantee by the Trust Indenture Act.
The following summary of the material terms of the guarantee is not intended to be complete and is qualified in all respects by the applicable prospectus supplement, the guarantee, the Trust Indenture Act and other applicable law. The guarantee will be filed as an exhibit to a Form 8-K or similar document incorporated by reference in the registration statement of which this prospectus forms a part. You can obtain a copy of this document by following the directions on page 7.
General Pursuant to and to the extent set forth in the guarantee, Lehman Brothers Holdings will irrevocably and unconditionally agree to pay in full to the holders of the preferred securities and common securities, on a pro rata basis, as and when due, regardless of any defense, right of set-off or counterclaim which the trust may have or assert, the following payments without duplication: •any accumulated and unpaid distributions that are required to be paid on the preferred securities, to the extent the trust has funds available for such distributions; •the redemption price per preferred security, to the extent the trust has funds available for such redemptions; and •upon a voluntary or involuntary dissolution, winding-up or liquidation of the trust, other than in connection with the distribution of junior subordinated debt securities to the holders of preferred securities, the lesser of •the aggregate
All the above is my opinion, after all who would believe me anyway since I drive a 1975 Vega!