Certain of the expense reimbursements described in the table above include a portion of the compensation expenses of officers, including a portion of the salary, bonus and benefits of certain of the Company’s named executive officers, as well as employees of the Advisor or its affiliates related to activities for which the Advisor did not otherwise receive a separate fee. The Company reimbursed the Advisor approximately $10.1 million, $8.3 million and $7.0 million for the years ended December 31, 2021, 2020 and 2019 respectively, for such compensation expenses.
As of December 31, 2020, $17.1 million of organization and offering costs that the Advisor had incurred on the Company’s behalf through December 31, 2019, remained payable to the Advisor. The Company paid this amount to the Advisor in full in January 2021. The Company now pays offering costs directly as and when incurred.
Holdings of Shares of Common Stock, OP Units and Special OP Units
We are the sole general partner of the Operating Partnership. We contributed $200,000 that we received from our former advisor to the Operating Partnership in exchange for 20,000 OP Units. Our former sponsor invested $1,000 in the Operating Partnership as a limited partner and was issued a separate class of OP Units, which constitute the Special Units. On July 1, 2021, these Special Units and the initial 20,000 shares of our common stock purchased by our former advisor were assigned to and assumed by our Advisor. In December 2021, the Special Units were assigned by our Advisor to its wholly-owned subsidiary, which we refer to as the Special Unit Holder.
So long as the Advisory Agreement has not been terminated, the performance component of the advisory fee will be paid in the form of an allocation and distribution to the Special Unit Holder or, at the election of the Advisor, all or a portion of this amount will be paid instead to the Special Unit Holder in the form of a fee, as described in the Advisory Agreement. Our former sponsor was the holder of the Special Units for 2018, 2019, 2020 and the first six months of 2021. In January 2019, we issued 71,872 Class I OP Units to our former sponsor as payment for the 2018 performance component of the advisory fee, in February 2020, we issued 289,074 Class I OP Units to our former sponsor as payment for the 2019 performance component of the advisory fee, and in January 2021, we issued 950,358 Class I OP Units to our former sponsor as payment for the 2020 performance component of the advisory fee. Subsequent to each issuance, our former sponsor made a pro rata distribution of these Class I OP Units to its members, which included the Chairman of our board of directors, Mr. Zucker. In January 2022, we issued 6,494,463 Class I OP Units as payment for the 2021 performance component of the advisory fee. At the direction of the Advisor and in light of our former sponsor having been the holder of the Special Units for the first six months of 2021, 3,273,003 of these Class I OP Units were issued to the Special Unit Holder, 1,610,730 of these Class I OP Units were issued to an entity owned indirectly by Mr. Zucker, and 1,610,730 of these Class I OP Units were issued to an entity owned indirectly by a member of our former sponsor. Following these transactions, Mr. Zucker owns 2,047,831 Class I OP Units as of March 31, 2022.
The resale of any shares by our affiliates is subject to the provisions of Rule 144 promulgated under the Securities Act, which rule limits the number of shares that may be sold at any one time and the manner of such resale.
Joint Venture Partnerships
On July 15, 2020, we acquired minority ownership interests in two joint venture partnerships, Build-To-Core Industrial Partnership I LP (the “BTC I Partnership”) and the BTC II Partnership (together the “BTC Partnerships”), for $301.0 million in cash paid at closing, exclusive of due diligence expenses and other closing costs. As of the date of acquisition, the joint venture partnerships’ aggregate real estate portfolios consisted of 64 acquired or completed buildings and 18 buildings under construction or in the pre-construction phase.
On June 15, 2021, we, along with our joint venture partners, entered into the BTC I Partnership Transaction to split the BTC I Portfolio, which, prior to the transaction, consisted of 44 buildings totaling approximately 12.1 million square feet. As a result of the BTC I Partnership Transaction (described further in “Note 5 to the Condensed Consolidated Financial Statements”), we own a 100% interest in 22 buildings that were previously part of the BTC I Portfolio, totaling approximately 5.4 million square feet with a total cost of $876.7 million, which includes the cost of our minority joint venture interest in the BTC I Partnership