Tania, thank you very much. Good morning, everyone, and thank you all for participating in our second quarter 2023 earnings call. On today’s call with me are George Johnstone, our Executive Vice President of Operations; Dan Palazzo, our Senior Vice President and Chief Accounting Officer, and Tom Wirth, our Executive Vice President and Chief Financial Officer. Prior to beginning, certain information discussed during our call may constitute forward-looking statements within the meaning of that federal securities law. Although, we believe estimates reflected in these statements are based on reasonable assumptions, we cannot give assurance that the anticipated results will be achieved. For further information on factors that could impact our anticipated results, please reference our press release, as well as our most recent annual and quarterly reports that we file with the SEC. During our prepared comments, Dan will review our second quarter results and progress on 2023 business plan. Tom will then review second quarter financial results and frame out the key assumptions driving our 2023 guidance for the balance of the year. And after that Dan, George, Tom and I are certainly available for any questions. So, moving to our prepared comment, the second quarter saw continued leasing momentum throughout our portfolio. During the quarter, we executed 568,000 square feet of leases, including a 177,000 square feet of new leases within our wholly-owned portfolio. Our joined venture portfolio achieved a very strong 401,000 square feet of lease execution including a 139,000 square feet of new leases. The combined activity totaled 969,000 square feet. And as we showed on Page one of our SIP, these are highest combined leasing volumes for the past four quarters. The operating metrics were strong as well. For the second quarter, we posted rental rate mark-to-market of 17.6% on a GAAP basis and 5.8% on a GAAP basis. As we look at the balance of the year, our mark-to-market will vary by region with CBD Philadelphia at a 17% cash and 30% GAAP rental rate increase. The PA suburbs will be a 2% cash positive and 9% GAAP positive. Our mark-to-market in Austin, we anticipate a negative on both the cash and a GAAP basis given the current market conditions. This quarter we did have an 18,000 square feet of positive absorption, we currently stand at 89.4% occupied and 91.1% lease based on the 224,000 square feet we have a four lease commencements. More importantly, as we view our portfolio, our core markets at Philadelphia CBD, University City, the Pennsylvania suburbs and Austin, which comprise about 94% of our NOI or 91.2% occupied and 92.7% lease. During the quarter, both our GAAP and cash same-store outperformed our business plan ranges, the second quarter capital cost were also in line with our business plan ranges, and tenant retention came in at 71% above the top end of our full-year forecast but we are maintaining our existing range based on forecasted activity between 49% to 51%. Spec revenue range remain $17 million to $19 million with $16.1 million or 89% at the midpoint already achieved. The speculative revenue range represents approximately 1.1 million square feet of which 787,000 square feet or 72% is already completed. Our operating platform is solid with a stable outlook, we further reduced our forward rollover exposure through 2024 to an average of 6.6% and through '26 to an average annual rate of 7.3%. We are definitely seeing a pickup in activity, converging the lease execution remains frustratingly slow with overall velocity, a starting point to any leasing cycle continues to improve. A several key points we like to highlight for you. One, is the quality curve thesis remains intact as our physical tour volume has been very encouraging. Second quarter physical tours exceeded the first quarter by 5%, exceeded our 2022 quarterly average by 47% and also exceeded pre-pandemic levels by significant margin as well. On a wholly-owned basis, during the second quarter an 118,000 square feet of our new leasing activity were 67% of on or those leases were a result of the flight to quality. We also saw tenant expansions continue to outweigh tenant contractions during the quarter. I think its further evidence of the emerging market recovery, our total leasing portfolio is up 21% from last quarter and stands at 3.5 million square feet. And that excludes the 1.3 million square feet we have on our joint venture pipeline which is also up from last quarter by over 200,000 square feet. The wholly-owned pipeline is broken down between 1.3 million square feet in our wholly-owned operating portfolio and 2.2 million square feet on our development project which again like the joint venture pipeline is up over 200,000 square feet from last quarter. The 1.3 million square foot existing portfolio pipeline includes approximately 160,000 square feet in advanced stage of lease negotiation. Also, in that pipeline, 31% of our operating portfolio new deals or our prospects looking to move up the quality curve. As we noted on Page 01 of our supplemental package, we did receive notice during the quarter from in a state of taxes that they terminated their lease at our Uptown ATX campus effective August 31st, 2023. The state currently occupies a 100% of one of our building there with that in an anticipated lease expiration date of October 26. The state has relocated their employed into a state-owned building, we are still assessing if that notice was provided in accordance with the requirements of the lease. And while we continue to make that assessment, as we determine we are entitled to additional rent or remedy, we have conservatively assume that we will not receive any rent after August and then remove that income from our FFO range. The overall impact of the early termination will be over $14 million as in terms of reduction in total forecast of rent over the remaining lease term and that includes about in a $1.5 million in 2023 and $4.4 million in 2024. In addition, we'll also need to write off approximately $370,000 in straight-lining rent over that 90 day period and then to the extent it is ultimately determined that that lease was effectively terminated in accordance with our Uptown ATX Master Plan we would plan on taking that building out-of-service, similar as we did in the 905 building as it would not be available for any re-leasing activity consists with our Master Plan development program. Turning to our EBITDA. Our second quarter net debt-to-EBITDA increase to 7.6 time, which is up from 7.4 from the first quarter primarily due to increased development spend of about $75 million. However, as occupancy and NOI increases during the balance of 2023, we anticipate this ratio will decrease to our business plan range, with asset sales taking place in the second half of the year and our prior-year $100 million reduction in JV debt attribution also occurring by the end of the fourth quarter. As we did note in the SIP, this ratio has been higher due to development spend and debt attribution from joint ventures based upon our development pipeline investment at quarter end we have a $338 million of capital invested in $93 million of JV debt generating really no meaningful NOI at this point. And if we remove that investment from our 7.6 metric, our leverage would be 6.4 times well within our core portfolio range. On the liquidity front, we also made solid progress on both our joint venture debt maturities in development financings during the quarter. In June, our Commerce Square joint venture closed to five-year $220 million secured financing with a 7.875% coupon, which replace a $204 million mortgage loan. Given the state of financing market, the rate was higher than we initially anticipated earlier in the year but that loan has some flexibility and open for pre-payment after June of 2025 and it does provide additional proceeds that fund current and future leasing costs. In connection with that refinancing, we did make a $50 million contribution to the venture to both fund closing costs, redeem a portion of our preferred equity partners, equity interest, and pay down all accrued but on pay partner preferred dividend to put back the joint venture on very solid financial footing. Subsequent to quarter end, our MAP joined venture is finalizing a short-term extension on our $180 million loan from the current lender that we will take that maturity through October 1st of 2023, that extension will provide additional time to work on a recapitalization strategy with both that leasehold lender and the Fee Owner of the properties. We are also in advanced discussions on a construction loan on our 155 King of Prussia Road project and we anticipate that loan will close in August. On our other joint operating joint ventures, we do have $70 million of overall investment with $620 million of non-recourse mortgages maturing next year before any extension options are exercised of that $620 million we got a $112 million is attributable to Brandywine as our ownership stake range between 15% and 20%. We're working very closely with all of our partners and our lenders on loan expansions and refinancing efforts and would expect to report additional progress on these non-recourse financings in the coming quarters. Currently our consolidated added 93% fixed at 5.03% or you have no consolidated debt maturities until October 24 bond, $350 million bond. We also have no access to any balance at the end of the quarter on the $600 million unsecured line of credit and we have approximately $32 million of unrestricted cash on our balance sheet. As we noted on Page 13 of our SIP, based on our projected development spend, our business plan, after fully funding remaining development spend all TI and leasing costs, we project and Tom will amplify that we will have full availability on that $600 million line of credit by year-end of 2023. For the quarter, at our guidance mid-point are $0.19 per share dividend represented a per-quarter dividend, represented a 66% FFO payout ratio and an 84% cap tier ratio. So, another great quarter controlling capital spend as such as we noted in the SIP, we're changing our CAD range a 90% to a 100% down from 95% to 105% and we anticipate our coverage to beat the low-end at the newer new range. I have to talk about a few moments, our business plans projects a 100 million to 125 million of sales that will generate additional liquidity as well as some gain. Certainly as our business plan progresses, the Board will closely monitor capital market condition both company and market overall liquidity, sale activity progress and our dividend payout levels as we assess the dividend going forward. Looking at our development pipeline, our wholly-owned development pipeline aggregates $302 million of cost and its 30% life science and 70% office. This wholly-owned developments are 83% lease with remaining funding requirement of $51 million which is built into our capital plan. The majority of that spend is for tenant improvement and leasing commissioning costs that would only be spent attending to our lease executions. Our joint venture development have a Brandywine share of $512 million, at full cost this pipeline is 32% residential, 38% life science, and 30% office. As we noted in the SIP, higher interest cost and originally contemplated, will impact our total cost, and based on the current so for curve, we currently estimate the cost increase due to higher rates, will approximate $23 million. Based on the preferred structure of those joint venture developments, it's anticipated that Brandywine will likely be required to fund those additional costs and we noted such we noted those increases on the development page in the SIP. Further, as I stated last quarter as well, we're saving the obvious given the volatility in the capital market other than fully leased build-to-suit opportunities, future development, so and so on whole pending more leasing on our existing pipeline and more clarity on the cost of both debt capital and cap rate. Looking ahead, given the mixed use nature of our Master Plan communities primarily at Schuylkill Yards and Uptown ATX as we identified on Page 14 of the SIP, our expected forward product pipeline mix is 27% life science, 42% residential, 22% office, and 9% support retail entertainment and hospitality. And also is identified back on Page 06 of the SIP, our objective is to grow our Life Science platform to over 23% of our square footage based on land we currently own or control and approvals currently implies. Just a quick review of specific projects, on Page 07. 2340 Dulles Corner is 92% pre-lease with $23 million of remaining funding. 250 King of Prussia Road, remains 53% leased with $20 million of remaining funding that 53% lease did not change quarter-over-quarter but we do have a strong pipeline of about 200,000 square feet of deals in that pipeline of which a 100% of that pipeline is life science. Based upon that pipeline, we did slide the stabilization date of that project by one quarter. In addition, when you take a look at our overall pipeline development activity, that pipeline of our development project is up 10% quarter-over-quarter and as I mentioned earlier stance at 2.2 million square feet. Lease execution even with the pipeline building have been slow in coming, and we have a number of leases in various stages of negotiation and are working hard to get them across the finish line. Giving mix dynamic, we did slide the stabilization date on 3025 JFK by one quarter and given the market conditions in pipeline activity in Austin did slide the one Uptown office component by two quarters in their stabilization date. On 3025, to touch on that, we have a current active pipeline that's up slightly from last quarter for the life science and office component, we've done an amazing number of tours through the project, that tour activity continues to deliver the first block of residential units is underway this quarter with a good level of activity since our marketing launch several weeks ago. Our 3151 life science project is under construction, Schuylkill is up to the fifth level. We have a leasing pipeline there of almost 400,000 square feet and all systems will go there in terms of the number of core net towards we're doing as well. Turning to Austin. Our Uptown ATX Block A construction, from a construction standpoint is on time and on budget. On the office component, our leasing pipeline is at standard 721,000 square feet which is up an 180,000 square feet from last quarter. That pipeline includes a mix of prospects ranging from as low as 5000 square feet to as largest 200,000 square feet. So, as that curtain wall and the building is going up and the lobby finishes are being completed, we're seeing an uptick in activity there as well. Our next space of B.Labs or on the nine floor Cira Center's well underway. This conversion a gradual lab space is now 66% lease. The full conversion will be completed in the first quarter of next year, the total cost which we built into our capital plan are $20 million and we expect a return on cost there of an 11%. Just a quick look at the sales market. There is no question that the sales market has been impacted by a challenging rate environment, a pullback by lenders on commercial real-estate financings particularly office and negative macro overtones on the office sector itself. In spite of this, based on our pre-marketing efforts, we are still maintaining our $100 million to $125 million sale target as we originally noted at the when we announced our 2023 business plan, we did anticipate those sales occurring in the second half of the year. We do have about $200 million of properties in the market for sale now. Those properties are in our mid D.C. and Pennsylvania suburban markets. We also have several joint venture properties on the market at the same time as well. This quarter, we did gain certainty on the sale of an asset in Austin and expect that $53 million sale to close in the next several weeks. We have several other properties moving through contract negotiation, a couple of which main assessed a some level of short-term seller financing. In general, we continue to see a good list of bidders, the primary challenge being getting acquisition financing at both the cost and the loan to value range that make sense for the buyer but we continue to work with our buyers and their potential lenders to try come up with a good solution. We do plan to continue to sell non-core land fossils during the balance of the year. And in the joint venture front, as I allude to really about 20% of our total debt is coming from our JVs through debt attribution. We do plan to recapitalize several of these JVs during the second half of 2023 with a goal to reduce our attributed debt from our operating JVs like 24% or approximately $100 million by the end of the year, that will certainly be additive to improving our EBITDA multiple. Dollars generated from those activities will be used to fund our remaining development pipeline commitment and obviously reduce leverage and improve the Company's liquidity. With those comments, I'll now turn it over to Tom to provide an overview of our financial results.