Michelle, thank you very much. Good morning, everyone and thank you for participating in our First Quarter 2022 Earnings Conference Call. On today's call with me are George Johnstone, our Executive VP of Operations; Dan Palazzo, our Vice President and Chief Accounting Officer; 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 the 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. While the world has changed quite a bit since our last call. The record inflation increased constructional labor costs, an unpromoted attack by Russia on Ukraine sovereignty, further disruption of global supply chains and a dramatic increase in baseline interest rates have all created a near-term outlook different than only several months ago. Our portfolio stability evidenced by our low forward rollover protection from expense increases on 70% of our leases due to their structure, the preponderance of triple net leases we have in the portfolio and our pragmatic approach to development, including below market land basis and options, position us well for these events. In our business those macro concerns are somewhat counterbalanced by the removal of federal and state COVID mandates leading our portfolio to higher levels of physical occupancy. Even more encouraging, we have also seen much stronger tenant interest in high quality work environments. Our tour levels, lease negotiations and deal executions remain on a very positive trend line. Those trends position our existing portfolio and development pipeline extremely well. In fact, 25% of our operating portfolio pipeline is comprised of tenants looking to upgrade from lower quality less amenitized buildings. During our prepared remarks, we'll review first quarter results, provide an update on our '22 business plan and some color on recent activity. Tom will then review our first quarter results, frame out the key assumptions driving the balance of our '22 guidance. And after that Dan, George and Tom and I are available for any questions you may have. The first quarter has gotten off to a very solid start. Results are in line with our '22 business plan. During the quarter, we executed 428,000 square feet of leases, including 287,000 square feet of new leases. For the first quarter we posted rental mark-to-market of 20.4% on a GAAP basis and 12.9% on a cash basis. Our full-year mark-to-market range is remain between 16% and 18% on a GAAP basis and 8% to 10% on a cash basis. As outlined in our 2020 operating plan we rolled that out last quarter, we had 252,000 square feet of known move-outs or negative absorption scheduled to occur in the first quarter. Approximately 57% of that space has been re-let with scheduled second through fourth quarter 2022 occupancies and the mark-to-market on those backfilled tenancies was 26% on a GAAP basis and 11% on a cash basis. In looking at our numbers, while quarterly same store cash outperformed our business plan range. The full-year impact of known -- of these known move-outs and that free rent on Blank Rome's renewal occurring subsequent quarters and as such we're keeping our range in place. First quarter Capital Costs were in line with our business plan, retention was 56%, slightly below the bottom end of our full-year forecast, but we are again, as with the other metrics, maintaining our range. Core Occupancy and lease targets were also within our ranges. We ended the quarter at 92.4% leased and 89.4% occupied, which was in line with our projection for the first quarter. It's interesting to note, when you look at our operating portfolio and look at filled up CBD, University City, the Pennsylvania suburbs and Austin, which covers 88% of our portfolio NOI. We are combined 94.8% leased and 91.8% occupied. Spec Revenue remains in the $34 million to $36 million range, with 29.4 million or 84% the midpoint achieved. Spec Revenue range represents approximately 2 million square feet of leasing, of which we are 1.4 million or 70% complete. Over the last couple of years, we have reduced our forward rollover exposure through 24 to an average of 7.5%. Further, our annual rollover exposure through 2026 is below 10% and both of these metrics clearly indicate core portfolio stability. On an FFO basis, and Tom will amplify this, we posted first quarter FFO of $0.35 per share, which was $0.01 above consensus. From an EBITDA standpoint, based upon the increased 2022 leasing activity, higher develop in a redevelopment spend, we are maintaining our projected EBITDA range in the range of 6.6x to 6.9x. As we framed out last quarter, the majority of this leverage increase is purely transitional, coming primarily through debt attribution from our joint venture and development activity. To amplify this point on page 3 of our SIP, we segment our EBITDA metrics between core and combine. The core EBITDA range of 6.0x to 6.3x focuses on our core portfolio by eliminating our joint venture and the active development projects and is a much more accurate measure of how we manage our core portfolio. Turning to leasing activity. We continue to be encouraged by the increasing pace of on-the-ground activity. Tours in the first quarter of 2022 outpaced the fourth quarter of 2021 by 30%. We had a total of almost 1800 virtual tours, inspecting over 470,000 square feet, which was up again 22% from our fourth quarter results. Our overall leasing pipeline stands at $4.1 million square feet, broken down between $1.3 million on our operating portfolio and $2.8 million square feet on our development projects. The $1.3 million square feet pipeline on our existing portfolio has approximately 350,000 square feet in advanced stages of negotiations with, as I mentioned a moment ago, 25% of that pipeline consisting of prospects looking to move up the quality curve. The leasing pipeline on our development projects of $2.8 million square feet increased 493,000 square feet or 20% during the first quarter. Deal conversion rate in the first quarter was up from Q4 and trailed pre-pandemic levels only by single-digits. So quite a close in the last couple of quarters. We do see tenants starting to accelerate their decision timeline. During this past quarter the median deal cycle time improved by two weeks and is now within two weeks of the pre-pandemic levels. And looking at liquidity and dividend coverages, we have excellent liquidity. Even with our targeted development spend in apps and other financing or redeployment sources, we anticipate having $350 million available on our line of credit at year-end '22. And as Tom will touch on, we have efforts underway to renew both our line of credit and our term loan. The dividend is well covered with the first quarter payout of 54% on the FFO and a CAD payout ratio of 74%. We anticipate that coverage improving significantly as future leases commence and development redevelopment projects stabilize. From a capital allocation standpoint, we made progress on several fronts. We continue selling non-core land parcels. During January we sold one parcel for $1.4 million, generated $900,000 gain and subsequent to the quarter end, we sold our land parcel in the Riverfront district of DC for $29.7 million, generating a $3.4 million gain that we will recognize in the second quarter. We deployed $28.6 million of these land sale proceeds into a 20% equity stake in Cira Square, which is an 863,000 square feet property located adjacent to our Cira South and Schuylkill Yards Projects in University City. You may recall we acquired the former post office project a number of years ago for $28 million, redeveloped it as a single-tenant property for the Federal government, sold that property in 2016 and generated $115 million gain. That owner that we sold to decide to sell, so this presented us with an unplanned opportunity to further solidify our University City market position. The property was purchased for $383 million at a well-below replacement cost of $440 per square feet and a mid-5 cash cap rate range and north of a 7% GAAP cap rate range. Our two partners, each owning a 40% stake, our sovereign wealth fund and a family wealth office. The project is 100% occupied by the GSA through August of 2030. The existing lease rate is at least 40% below existing market rates and the GSA has no renewal rights upon expiration. As such as we evaluated this acquisition, it's really a proxy for either a material mark-to-market profit opportunity or a significant repositioning into a Life Science facility at the gateway to University City and adjacent to 30th Street Train Station. Based on current assumptions either a renewal at Market or conversion of Life Science will generate at least a mid-teens IRR and equity multiples ranging between 3x and 5x. The University City Science Market, Life Science Market rather, as you all know has strengthened considerably since we sold this property in 2016. So acquiring this property created a preeminent profit and repositioning opportunity and bring in two high-quality partners for 80% ownership stake also minimize our direct investment and effectively make this a leverage neutral transaction. And looking at our other development opportunity in SIP, at 405 Colorado in downtown Austin, we signed over 66,000 square feet of leases during the quarter. The project now stands at 81% leased. An additional full-floor leases out for signature and an executed LOI for half a floor, so we do expect to be somewhere between 91% and 95% leased during the second quarter. Rental rates held strong in the mid '40s and concession packages remain very much in line with our pro forma. Given permitting delays with the City of Austin and the timing of several these occupancies, we have shifted the stabilization to the first quarter of '23. In the Pennsylvania suburbs, Radnor submarket, our 250 King of Prussia Road project is on time and on budget. We are now over 29% pre-leased, having signed 35,000 square feet of lease -- of Life Science leases this past quarter. Our current pipeline is north of 200,000 square feet including 12,000 square feet in lease negotiations. You may recall this project is our first delivery in our Radnor Life Science Center, which will consist of more than 300,000 square feet of Life Science space in the region's best performing submarket. Our B.Labs project at Cira Center, the 50,000 square feet incubator opened in January and is 97% leased to 12 companies. It's doing very well and based on tenant feedback, we do anticipate between 150,000 square feet to 200,000 square feet of demand out of these tenants in the next 12 to 24 months. Based on this success, we do plan to add another floor, a mid-tour incubator totaling approximately 27,000 square feet by year-end '22. And in addition to that, plans are underway to add another 78,000 square feet of Life Science capable space through Floor 9 in the Cira Center project. The target delivery of that space is the second quarter of '23. In looking at some of our development of Schuylkill Yards and Uptown ATX, Schuylkill Yards West, our Life Science office and residential tower is on time and on budget for a Q3 '23 delivery. We have an active pipeline totaling about 550,000 square feet, that's up significantly from the previous quarter for both the -- that's for the Life Science and the office components. And we expect that pipeline to continue to progress as construction continues to move forward. Our entire equity commitment in that project of $56.8 million is fully funded and our partners' equity investment is currently being made with the first funding into construction loan occurring in the second quarter of '22. Our life science push does continue at Schuylkill Yards. As we've noted before, we can develop between $3 million square feet and $4 million square feet of Life Science space. And we do anticipate our next start will be 3151 Market Street, a 424,000 square feet dedicated Life Science building, buildings fully designed and fixed price. We have a leasing pipeline of about 350,000 square feet on that project, which is up about 150,000 square feet from last quarter and our goal does remain to start that project in the next couple of quarters. Turning the attention down south to Uptown, which is our 66-acre mixed use community, where we have the development capacity approaching close to $7 million square feet. Construction is underway on Block A, which as we've identified in the SIP is 348,000 square feet Office, 341 residential units and 15,000 square feet of ground floor retail. We anticipate completion of that office component in the third quarter of '23 and the residential component a year later in the third quarter of '24. Important to note here as well, Brandywine equity commitment of $57 million only has a remaining balance to be funded of $1 million, which will occur in the second quarter. The CapMetro train station, Uptown ATX that will provide direct access to downtown Austin had our groundbreaking, we're expecting that to be opening for service in 2024. We further anticipate that the first phase of Block F, which is 272 apartment units will be starting in the second quarter of '22. Just a general comment about our forward development pipeline given macro conditions. Yes, we do have significant development opportunities ahead of us, that we believe can create significant shareholder value. But we also have tremendous flexibility. Our land base at Uptown is about $5 in [FAR] foot, which is obviously well below market value, which affords us the opportunity for not only a land profit but also minimizing carry on that land through the development cycle. And our land control Schuylkill Yards, as you know is via options, so there is very few verbal carry costs on those land holdings. And we had to take down based on the milestone schedule with significant extension options. So both of these facts provide us with significant flexibility to develop a real estate and capital market demand drivers. The second key point is the diversity of the product in our forward development pipeline as we highlighted on page 13 of our supp. Of the 14.2 million square feet we can build, only about 25% is dedicated office with the ability to do between 3 million square feet and 4 million square feet of Life Science space and incorporating that in that square footage pipeline is the ability to do that 4,000 apartment units. So further, further our overlay approvals on both of those sites, give us a degree of flexibility to further adjust that mix to meet future market demand drivers. So key takeaways, low basis land under option, low carrying cost and demand driver flexibility. Looking at the, at the investment market, our '22 plan does not incorporate any dispositions or additional acquisitions, but we do anticipate being active on these fronts. As we have done thus far, this year we do anticipate continue to self-select non-core land parcels. With the office recovery underway we believe we have several opportunities to harvest profits with low cap rate sales. We also anticipate sales of select properties out of our existing joint ventures and dollars generated from these activities we'll use to fund our development pipeline, reduce leverage and where appropriate redeploying the higher growth opportunities. So, Tom will now provide an overview of our financial results.