phas-8k_20190509.htm

 

 

 

 

 

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

 

FORM 8-K

 

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): May 9, 2019

 

PhaseBio Pharmaceuticals, Inc.

(Exact name of Registrant as Specified in Its Charter)

 

 

Delaware

001-38697

03-0375697

(State or Other Jurisdiction

of Incorporation)

(Commission

File Number)

(IRS Employer

Identification No.)

 

1 Great Valley Parkway, Suite 30

Malvern, Pennsylvania

 

19355

(Address of Principal Executive Offices)

 

(Zip Code)

(610) 981-6500

(Registrant’s Telephone Number, Including Area Code)

Not Applicable

(Former Name or Former Address, if Changed Since Last Report)

 

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instructions A.2. below):

 

Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

 

Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

 

Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

 

Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company  

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  

 

Securities registered or to be registered pursuant to Section 12(b) of the Act.

 

Title of each class

 

Trading

Symbol(s)

 

Name of each exchange on which registered

Common Stock

 

PHAS

 

The Nasdaq Stock Market LLC

 

 

 

 


 

Item 2.02    Results of Operations and Financial Condition.

 

On May 9, 2019, PhaseBio Pharmaceuticals, Inc. (the “Company”) reported financial results for the first quarter ended March 31, 2019. A copy of this press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated by reference.

 

The information in this Item 2.02 of this Current Report on Form 8-K (including Exhibit 99.1) is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that Section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended (the “Securities Act”), or the Exchange Act, except as expressly set forth by specific reference in such a filing.

 

Item 7.01    Regulation FD Disclosure.

 

On May 9, 2019, the Company updated its corporate presentation for use in meetings with investors, analysts and others. The presentation is available through the Company’s website and a copy is attached as Exhibit 99.2 to this Current Report on Form 8-K.

 

The information in this Item 7.01 of this Current Report on Form 8-K, including Exhibit 99.2, is being furnished pursuant to Item 7.01 and shall not be deemed “filed” for purposes of Section 18 of the Exchange Act or otherwise subject to the liabilities of that section, and it shall not be deemed incorporated by reference in any filing under the Securities Act or under the Exchange Act, whether made before or after the date hereof, except as expressly set forth by specific reference in such filing to this item of this report.

Item 9.01 Financial Statements and Exhibits.

 

(d)Exhibits

 

 

 

 

Exhibit No.

 

Description

 

 

99.1

 

Press Release, dated May 9, 2019, titled “PhaseBio Reports First Quarter 2019 Financial and Business Results.”

 

 

99.2

 

Corporate Presentation, dated May 9, 2019.

 


 


 

 

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

 

 

 

 

PhaseBio Pharmaceuticals, Inc.

 

 

 

 

Dated: May 9, 2019

 

By:

/s/ John Sharp

 

 

 

John Sharp

 

 

 

Chief Financial Officer

 

 

phas-ex991_7.htm

Exhibit 99.1

 

 

PhaseBio Reports First Quarter 2019 Financial and Business Results

 

Completed public offering of common stock that raised $46.2 million in net proceeds

 

Received FDA Breakthrough Therapy designation for PB2452

 

Results from Phase 1 clinical trial of PB2452 published in the New England Journal of Medicine and presented at the American College of Cardiology’s Annual Scientific Session

 

Malvern, PA, and San Diego, CA, May 9, 2019PhaseBio Pharmaceuticals, Inc. (Nasdaq: PHAS), a clinical-stage biopharmaceutical company focused on the development and commercialization of novel therapies for orphan diseases, today reported financial results for the first quarter ended March 31, 2019 and provided an update on corporate activities.

 

“Our priorities for 2019 include advancing our clinical stage development programs, creating value by partnering our early stage programs and building on our strong financial position,” said Jonathan P. Mow, Chief Executive Officer of PhaseBio. “We have recently made significant progress on all three fronts: presenting positive Phase 1 results and receiving Breakthrough Therapy designation for our lead program, PB2452; signing a licensing agreement with ImmunoForge for PB1023; completing an upsized and oversubscribed underwritten public offering of our common stock, which generated net proceeds of $46.2 million. With our first quarter performance and recent developments providing a strong tailwind, we are in an excellent position to execute on our strategic objectives, which are focused on delivering important medicines to patients with significant unmet medical needs.”

 

First Quarter and Recent Corporate Progress

 

 

Completed underwritten public offering of common stock: In April 2019, PhaseBio closed an underwritten public offering of 4.1 million shares of its common stock at a price to the public of $12.00 per share, including shares sold pursuant to the full exercise of the underwriters’ option to purchase additional shares. PhaseBio received $46.2 million in net proceeds, after deducting underwriting discounts and commissions and offering expenses.

 

 

PB1023 licensing deal: In April 2019, PhaseBio announced it licensed to ImmunoForge, Co. Ltd. (“ImmunoForge”) the global rights for PB1023, a long-acting, ELP-based GLP-1 agonist. Under the terms of the agreement, PhaseBio granted ImmunoForge an exclusive, worldwide license, with rights to sublicense, to PB1023 for the development and commercialization of treatments for all diseases except diabetes, obesity and non-alcoholic steatohepatitis (“NASH”). PhaseBio received an upfront payment upon execution of the agreement and is eligible to receive development milestone payments, and royalty payments on net sales of products, including sales from sublicense agreements.

 

 

Received Breakthrough Therapy designation for PB2452: In April 2019, PhaseBio announced that the U.S. Food and Drug Administration (“FDA”) granted Breakthrough Therapy designation for PB2452. The Breakthrough Therapy designation for PB2452 was supported by Phase 1 trial results in which PB2452 achieved immediate and sustained reversal of ticagrelor antiplatelet activity. Breakthrough Therapy designation is designed to expedite the development and review of promising new drugs for serious or life-


 

 

threatening conditions when preliminary clinical evidence indicates that the drug may demonstrate substantial improvement over existing therapies on one or more clinically significant endpoints.

 

 

Secured up to $15.0 million term loan facility: In March 2019, PhaseBio entered into a $15.0 million term loan facility with Silicon Valley Bank and WestRiver Innovation Lending Fund. PhaseBio received an initial tranche of $7.5 million upon execution of the loan agreement and used the funds to repay the existing term loan in full. A second tranche of $2.5 million will be available through May 31, 2019. PhaseBio will draw the remaining funding of $5.0 million upon the achievement of certain clinical milestones related to the development of PB2452.

 

 

Reported and published PB2452 Phase 1 results: In March 2019, full results from the Phase 1 clinical trial of PB2452 were published in the New England Journal of Medicine in a paper titled, “An Antibody-Based Ticagrelor Reversal Agent in Healthy Volunteers” and simultaneously presented in a featured clinical research session at the American College of Cardiology’s 68th Annual Scientific Session. The results demonstrated that PB2452 provided immediate and sustained reversal of the antiplatelet activity of ticagrelor.

 

Upcoming Milestones

 

 

Dose the first patient in the Phase 2a trial of PB2452 in the second quarter of 2019.

 

 

Report preliminary data from the Phase 2a trial of PB2452 in second quarter of 2019.

 

 

Initiate Phase 2b trial of PB2452 in the second half of 2019.

 

First Quarter 2019 Financial Results

 

Cash Position

 

Cash and cash equivalents at March 31, 2019 were $51.9 million, compared to $61.0 million at December 31, 2018. The decrease primarily reflects cash used in operating activities.

 

Results of Operations

 

Three Months Ended March 31, 2019

 

PhaseBio reported a net loss of $7.3 million for the three months ended March 31, 2019, compared with a net loss of $4.4 million for the same period in 2018. This resulted in a net loss of $0.30 per share for the three months ended March 31, 2019, compared to a net loss of $5.90 per share for the corresponding period in 2018, on both a basic and diluted basis.

 

Grant revenue was $0.7 million for the three months ended March 31, 2019, as PhaseBio incurred allowable costs qualifying for reimbursement under the government grants. PhaseBio did not record any grant revenue for the three months ended March 31, 2018.  

 

Research and development expense increased to $5.7 million for the three months ended March 31, 2019, as compared to $2.2 million for the three months ended March 31, 2018,


 

reflecting an increase in manufacturing, clinical and preclinical development activities primarily related to PB2452.

 

General and administrative expense increased to $2.3 million for the three months ended March 31, 2019, compared to $0.6 million for the three months ended March 31, 2018, primarily attributable to increases in professional services including legal, marketing and other consulting services, personnel expense due to additional headcount and expenses associated with being a public company.

 

About PhaseBio

 

PhaseBio Pharmaceuticals, Inc. is a clinical-stage biopharmaceutical company focused on the development and commercialization of novel therapies to treat orphan diseases, with an initial focus on cardiopulmonary disorders. The company’s lead development candidate is PB2452, a novel reversal agent for the antiplatelet therapy ticagrelor. PhaseBio is also leveraging its proprietary elastin-like polypeptide (“ELP”) technology platform to develop therapies with the potential for less-frequent dosing and improved pharmacokinetics. PhaseBio’s second product candidate PB1046, which is based on ELP, is a once-weekly vasoactive intestinal peptide receptor agonist for the treatment of pulmonary arterial hypertension.

 

PhaseBio is located in Malvern, PA and San Diego, CA. For more information, please visit www.phasebio.com.

 

Forward-Looking Statements

 

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Words such as “anticipates,” “believes,” “expects,” “intends,” “projects,” and “future” or similar expressions are intended to identify forward-looking statements.

 

Forward-looking statements include statements concerning or implying the conduct of our clinical trials and the timing of the release of the results of our clinical trials. Forward-looking statements are based on management's current expectations and are subject to various risks and uncertainties that could cause actual results to differ materially and adversely from those expressed or implied by such forward-looking statements. Accordingly, these forward-looking statements do not constitute guarantees of future performance, and you are cautioned not to place undue reliance on these forward-looking statements.

 

Risks regarding our business are described in detail in our Securities and Exchange Commission filings, including in our quarterly report on Form 10-Q for the quarter ended March 31, 2019. These forward-looking statements speak only as of the date hereof, and PhaseBio Pharmaceuticals, Inc. disclaims any obligation to update these statements except as may be required by law.

 

###

 

Investor Contact:

John Sharp

PhaseBio Pharmaceuticals, Inc.


 

Chief Financial Officer

(610) 981-6506

john.sharp@phasebio.com

 

Media Contact:

Gina Cestari

6 Degrees

(917) 797-7904

gcestari@6degreespr.com

 

 


 

PhaseBio Pharmaceuticals, Inc.

Condensed Balance Sheets

(in thousands)

(unaudited)

 

 

 

 

March 31,

2019

 

 

December 31,

2018

 

Assets:

 

 

 

 

 

 

 

 

Cash and cash equivalents

 

$

51,894

 

 

$

61,031

 

Other receivable, prepaid expenses and other current assets

 

 

2,181

 

 

 

1,597

 

Property and equipment, net

 

 

380

 

 

 

355

 

Operating lease right-of-use assets

 

 

1,899

 

 

 

0

 

Other non-current assets

 

 

32

 

 

 

43

 

Total assets

 

$

56,386

 

 

$

63,026

 

 

 

 

 

 

 

 

 

 

Liabilities and stockholders' equity:

 

 

 

 

 

 

 

 

Current portion of long-term debt

 

$

423

 

 

$

 

Accounts payable, accrued expenses and other current liabilities

 

 

3,374

 

 

 

4,577

 

Long-term debt

 

 

6,841

 

 

 

7,500

 

Operating lease liabilities

 

 

1,666

 

 

 

0

 

Deferred rent

 

 

 

 

 

22

 

Stockholders’ equity

 

 

44,082

 

 

 

50,927

 

Total liabilities and stockholders' equity

 

$

56,386

 

 

$

63,026

 

 


 

 

PhaseBio Pharmaceuticals, Inc.

Condensed Statements of Operations

(in thousands, except share and per share amounts)

(unaudited)

 

 

 

 

Three Months Ended March 31,

 

 

 

2019

 

 

2018

 

 

 

 

 

 

 

 

 

 

Grant revenue

 

$

653

 

 

$

 

Operating expenses:

 

 

 

 

 

 

 

 

Research and development

 

 

5,721

 

 

 

2,235

 

General and administrative

 

 

2,316

 

 

 

643

 

Total operating expenses

 

 

8,037

 

 

 

2,878

 

Loss from operations

 

 

(7,384

)

 

 

(2,878

)

Other income (expense)

 

 

91

 

 

 

(1,525

)

Net loss

 

$

(7,293

)

 

$

(4,403

)

 

 

 

 

 

 

 

 

 

Net loss per common share, basic and

      diluted

 

$

(0.30

)

 

$

(5.90

)

 

 

 

 

 

 

 

 

 

Weighted average common shares

      outstanding, basic and diluted

 

 

24,498,388

 

 

 

745,812

 

 

phas-ex992_22.pptx.htm

Slide 1

Corporate Overview May 2019 Exhibit 99.2

Slide 2

Legal Disclaimer This presentation includes forward-looking statements. All statements contained in this presentation other than statements of historical facts, including statements regarding future results of operations and financial position of PhaseBio Pharmaceuticals, Inc. (“we,” “us” or “our”) our business strategy and plans, the preclinical and clinical development of our product candidates and our objectives for future operations, are forward-looking statements. The words “anticipate,” believe,” “continue,” “estimate,” “expect,” “intend,” “may,” “will” and similar expressions are intended to identify forward-looking statements. We have based these forward-looking statements largely on our current expectations and projections about future events and financial trends that we believe may affect our financial condition, results of operations, business strategy, clinical development, short-term and long-term business operations and objectives and financial needs. These forward-looking statements are subject to a number of risks, uncertainties and assumptions. Risks regarding our business are described in detail in our Securities and Exchange Commission filings, including in our Quarterly Report on Form 10-Q for the quarter ended March 31, 2019. Moreover, we operate in a very competitive and rapidly changing environment. New risks emerge from time to time. It is not possible for our management to predict all risks, nor can we assess the impact of all factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements we may make. In light of these risks, uncertainties and assumptions, the future events and trends discussed in this presentation may not occur and actual results could differ materially and adversely from those anticipated or implied in the forward-looking statements. Although we believe that the expectations reflected in the forward-looking statements are reasonable, we cannot guarantee future results, levels of activity, performance, achievements or events and circumstances reflected in the forward-looking statements will occur. We are under no duty to update any of these forward-looking statements after the date of this presentation to conform these statements to actual results or revised expectations, except as required by law. You should, therefore, not rely on these forward-looking statements as representing our views as of any date subsequent to the date of this presentation. Moreover, except as required by law, neither we nor any other person assumes responsibility for the accuracy and completeness of the forward-looking statements contained in this presentation.

Slide 3

Company Overview Therapeutic Focus Clinical-stage biopharma company focused on the development and commercialization of novel therapies to treat orphan diseases, with an initial focus on cardiopulmonary indications Product Candidates PB2452 – Novel agent for immediate and sustained reversal of ticagrelor, the preferred antiplatelet therapy of the American College of Cardiology, the American Heart Association and European Society of Cardiology PB1046 – Once-weekly novel treatment for pulmonary arterial hypertension (PAH), based on elastin-like polypeptide (ELP) technology, that is vasodilatory, potentially disease-modifying and complementary to current standard-of-care therapies Platform Technology ELP Technology Extends circulating half-life of proteins and peptides and provides a sustained-release mechanism Enhances solubility, stability and bioavailability, provides extended drug exposure Creates product candidates that are straightforward to manufacture and administer Milestones & Catalysts 2019 PB2452 March 17, 2019 Late-breaking oral presentation of full Phase 1 results at the American College of Cardiology’s Annual Scientific Session/ Simultaneous publication in New England Journal of Medicine PB2452 April 8, 2019 Granted Breakthrough Therapy designation by FDA PB2452 1H 2019 Dose first patient in Phase 2a trial in healthy older adults PB2452 1H 2019 Report initial results from Phase 2a trial in healthy older adults PB2452 2H 2019 Initiate large Phase 2b trial in healthy older adults to support BLA safety database 2020 PB1046 2020 Phase 2b data PB2452 2020 Initiate Phase 3 study based on plan to pursue accelerated approval pathway

Slide 4

Program Indication/Therapeutic Area Pre-Clinical Phase 1 Phase 2 Phase 3 WW Commercial Rights Milestones PB2452 Reversal of Ticagrelor Antiplatelet Activity 1H 2019: Initiate Phase 2a trial Report initial Phase 2a trial results 2H 2019: Initiate Phase 2b trial 2020: Initiate Phase 3 trial based on plan to pursue accelerated regulatory pathway PB1046 Pulmonary Arterial Hypertension (PAH) 2020: Phase 2b trial results GLP2-ELP Short Bowel Syndrome CNP-ELP Achondroplasia Early Programs A Clinical Stage, Orphan Disease-Focused Biopharmaceutical Company Phase 2 ongoing Breakthrough Therapy Designation granted in April 2019 Late research PROPRIETARY LONG ACTING INJECTABLE RECOMBINANT BIOPOLYMERS (Elastin-like Polypeptides – ELPs) ELP TECHNOLOGY PLATFORM DRIVES INTERNAL DISCOVERY IND-enabling activities Phase 2 ongoing

Slide 5

Corporate

Slide 6

Recent Corporate Highlights Completed underwritten public offering of common stock: April 2019 PhaseBio received $46.2 million in net proceeds, after deducting underwriting discounts and commissions and offering expenses PB2452 granted Breakthrough Therapy designation by FDA: April 2019 Breakthrough Therapy designation is designed to expedite the development and review of promising new drugs Reported PB2452 Phase 1 results: March 2019 Presented as a late breaking oral presentation at the American College of Cardiology’s Annual Scientific Session on March 17, 2019 Simultaneously published in the New England Journal of Medicine Executed PB1023 licensing deal with ImmunoForge: April 2019 PhaseBio granted ImmunoForge an exclusive, worldwide license, with rights to sublicense, to PB1023 for the development and commercialization of treatments for all diseases except diabetes, obesity and non-alcoholic steatohepatitis (“NASH”) Secured up to $15 million term loan facility from Silicon Valley Bank: March 2019 Funds used to repay existing $7.5M term loan in full and support advancement of PB2452 Cash balance as of March 31, 2018: $51.9M Well capitalized to execute development plan

Slide 7

First-Quarter 2019 Financial Highlights Operating expense: $8.0M R&D: $5.7M SG&A: $2.3M Loss from Operations: ($7.4M) Net Loss of ($7.3M) or ($0.30) per share 24.5M shares used for computing Q1 2019 net loss per share Cash and cash equivalents as of 03/31/2019: $51.9M All values in USD millions except share counts and net loss per share Numbers may not sum to totals due to rounding

Slide 8

Experienced Management Team JONATHAN MOW Chief Executive Officer Amylin Pharmaceuticals, Corus Pharma, PathoGenesis, BMS JOHN SHARP Chief Financial Officer Ligand Pharmaceuticals, HUYA Bioscience, Sequenom, Diversa JOHN LEE, MD, PhD, FACC Chief Medical Officer Merck, BMS, Quintiles SUSAN ARNOLD, PhD VP of Preclinical & CMC Targeted Genetics, Viromed Biosafety Labs, BioRexis, NuPathe JIM BALLANCE, PhD VP Research & Scientific Affairs Delta Biotechnology, Aventis Behring, BioRexis MICHAEL YORK VP Corp Development & Commercial Strategy Orexigen, Amylin Pharmaceuticals, Santarus, Amgen, AstraZeneca GLEN BURKHARDT VP Human Resources Hologic, Onyx Pharmaceuticals, Eli Lilly

Slide 9

PB2452 – Reversal Agent for Ticagrelor

Slide 10

PB2452 - Novel reversal agent for Brilinta (ticagrelor) Human monoclonal antibody fragment (Fab), delivered intravenously in the hospital Phase 1 Proof of Concept Study completed Selected for late-breaking oral presentation American College of Cardiology’s Annual Scientific Session (March 17, 2019) Simultaneously published in the New England Journal of Medicine Immediate and sustained reversal of ticagrelor anti-platelet effects P2Y12 receptor antagonist with demonstrated superior efficacy to clopidogrel Reversal agent availability would differentiate ticagrelor on safety vs. other oral antiplatelet agents Growth in ticagrelor share of P2Y12 market would increase need for reversal agent Significant unmet need for antiplatelet agent reversal All oral antiplatelet agents have the potential to cause major bleeding, which can be severe or even fatal PB2452 immediately and sustainably reverses the antiplatelet effects of ticagrelor Currently oral P2Y12 agents, including ticagrelor, require a ≥5 day washout prior to surgery1,2 Urgent surgery cannot wait 5 days High thrombotic risk during washout In the Phase 1 study, PB2452 immediately and sustainably reversed ticagrelor inhibition of platelet activation Enables immediate surgery Active Major Bleeding Urgent Surgery or Intervention Plavix/clopidogrel Prescribing Information: https://packageinserts.bms.com/pi/pi_plavix.pdf, https://www.ema.europa.eu/en/documents/product-information/plavix-epar-product-information_en.pdf Brilinta/Brilique/ticagrelor Prescribing Information: https://www.azpicentral.com/brilinta/brilinta.pdf#page=1, https://www.ema.europa.eu/en/documents/product-information/brilique-epar-product-information_en.pdf

Slide 11

PB2452: Well-Characterized Mechanism of Reversal of Ticagrelor ADP ADP Platelet ADP binds to P2Y12 receptor causing platelet aggregation Ticagrelor binds to P2Y12, inhibiting ADP-induced platelet aggregation This is a reversible process with ticagrelor cycling on/off the P2Y12 receptors PB2452:ticagrelor is eliminated from the bloodstream PB2452:ticagrelor binding is preferential to ticagrelor:P2Y12 binding As free ticagrelor is eliminated, ADP can again activate the P2Y12 receptor, restoring platelet activity PB2452 binds to free ticagrelor with very high affinity PB2452 4. 5. 6. 1. 2. 3. ADP ADP Platelet ADP Ticagrelor P2Y12 Receptor ADP

Slide 12

PB2452 Granted Breakthrough Therapy Designation In April 2019, PB2452 was granted Breakthrough Therapy designation by FDA Designation supported by Phase 1 trial results, which were recently published in the New England Journal of Medicine1 Breakthrough Designation may be granted by FDA when preliminary clinical evidence indicates that the drug may demonstrate substantial improvement over existing therapies Breakthrough Therapy designation offers companies the following benefits designed to expedite the review process2: Intensive guidance on an efficient drug development program, beginning as early as Phase 1 Organizational commitment involving senior managers All Fast Track designation features including more frequent meetings with FDA and more frequent written communication from FDA Companies may also be eligible for Accelerated Approval and Priority Review, if relevant criteria are met Bhatt, D. L. et al. Antibody-based ticagrelor reversal agent in healthy volunteers. N. Engl. J. Med. https://doi.org/10.1056/NEJMoa1901778 (2019) The U.S. Food and Drug Administration. “Expedited Programs for Serious Conditions – Drugs and Biologics.” Available at: https://www.fda.gov/downloads/Drugs/Guidances/UCM358301.pdf. Accessed April 2019

Slide 13

PB2452 Phase 1 Proof-of-Concept Study in Healthy Subjects Selected as late-breaking oral presentation during featured clinical research session at the American College of Cardiology’s Annual Scientific Session – March 17, 20191 Simultaneously published in the New England Journal of Medicine2 https://www.acc.org/latest-in-cardiology/clinical-trials/2019/03/15/21/37/ticagrelor-reversal-agent Bhatt DL, Pollack CV, Weitz JI, et al. Antibody-Based Ticagrelor Reversal Agent in Healthy Volunteers. N Engl J Med 2019;Mar 17:[Epub ahead of print].

Slide 14

PB2452 Phase 1 Proof-of-Concept Study in Healthy Subjects Randomized, double-blind, placebo-controlled, single ascending dose (SAD), sequential group study (n=64) 3:1 randomization, PB2452-Placebo Higher-dose cohorts pre-treated with ticagrelor After 48 hours of ticagrelor, platelet aggregation was suppressed by ~80%, as expected based on approved package insert Platelet function evaluated using three well established and commonly used assays: LTA, VerifyNow P2Y12 and VASP Results from all three assays were highly correlated Onset of reversal occurred within 5 minutes and was sustained for over 20 hours P<0.001 across all timepoints, Bonferroni adjusted Well tolerated with no drug-related serious adverse events No evidence of rebound in platelet activity after drug cessation LTA = light transmittance aggregometry, VASP = vasodilator stimulated phosphoprotein phosphorylation immunoassay Bhatt DL, Pollack CV, Weitz JI, et al. Antibody-Based Ticagrelor Reversal Agent in Healthy Volunteers. N Engl J Med 2019;Mar 17:[Epub ahead of print].

Slide 15

PB2452 Phase 1 Trial Design Cohort Ticagrelor Pretreatment PB2452 IV regimen Volunteers Active:Placebo 1 None 0.1g 30 min 3A:1P 2 None 0.3g 30 min 3A:1P 3 None 1g 30 min 3A:1P 4 180mg PO + 90mg BID x 2 days 1g 30 min 6A:2P 5 180mg PO + 90mg BID x 2 days 3g 30 min 6A:2P 6 180mg PO + 90mg BID x 2 days 9g 30 min 6A:2P 7 180mg PO + 90mg BID x 2 days 18g (3g 5 min + 15g 7 hr 55 min) 6A:2P 8 180mg PO + 90mg BID x 2 days 18g (6g 15 min + 6g 3 hr + 6g 8hr 45 min) 6A:2P 9 180mg PO + 90mg BID x 2 days 18g (6g 15 min + 6g 4 hr + 6g 12 hr) 3A:1P 10 180mg PO + 90mg BID x 2 days 18g (6g 10 min + 6g 3 hr + 6g 13 hr) 6A:2P Cohorts 9 and 10 achieved study objectives and will be the basis for dosing in the Phase 2a study in generally healthy older volunteers Bhatt DL, Pollack CV, Weitz JI, et al. Antibody-Based Ticagrelor Reversal Agent in Healthy Volunteers. N Engl J Med 2019;Mar 17:[Epub ahead of print]. g = grams, min= minutes, A = active, P = placebo, mg=milligrams, hr=hours, PO=orally, BID= twice per day

Slide 16

Nominal Time (h) Platelet Function After Ticagrelor Reversal - LTA Normalization of platelet response to ADP was assessed by whether reversal of ticagrelor achieved a normal range of platelet function Bhatt DL, Pollack CV, Weitz JI, et al. Antibody-Based Ticagrelor Reversal Agent in Healthy Volunteers. N Engl J Med 2019;Mar 17:[Epub ahead of print]. Return to Normal Platelet Function: Post-PB2452 Dosing Inhibited Platelet Function: Post-Ticagrelor Dosing Normal Platelet Function: Pre-Ticagrelor Dosing Normal Platelet Function Inhibited Platelet Function LTA= light transmittance aggregometry; Adenosine Diphosphate (ADP) is the agonist Shown are data from cohorts 9 and 10 (pooled) Cohorts 9 and 10 achieved study objectives and will be the basis for dosing in the Phase 2a study in generally healthy older volunteers Dose-dependent response across all cohorts tested Immediate reversal within 5 minutes of start of infusion Sustained duration of reversal extended to 20+ hours Rapid resumption of ticagrelor dosing post infusion Well tolerated across all cohorts No drug-related SAEs

Slide 17

%Platelet aggregation by AA Nominal Time (h) Platelet Aggregation with AA and TRAP Mean platelet aggregation by LTA using AA (top) or TRAP (bottom) as agonist %Platelet aggregation by TRAP Nominal Time (h) Arachidonic acid (AA) Thrombin receptor activating peptide (TRAP) No platelet rebound effect observed Absence of platelet hyper-reactivity, or rebound effect with arachidonic acid and thrombin receptor activating peptide between 5 minutes and 48 hours Platelet rebound between 5 minutes and 48 hours was also ruled out by the response to low-dose ADP versus high-dose ADP* Bhatt DL, Pollack CV, Weitz JI, et al. Antibody-Based Ticagrelor Reversal Agent in Healthy Volunteers. N Engl J Med 2019;Mar 17:[Epub ahead of print]. *ADP data presented by Dr. Deepak L. Bhatt at the American College of Cardiology Annual Scientific Session (ACC 2019), New Orleans, LA, March 17, 2019. Slides available at: https://www.acc.org/~/media/Clinical/PDF-Files/Approved-PDFs/2019/03/15/ACC19_Slides/Mar17_Sun/3pmET_Ticagrelor-Reversal-Agent-acc-2019.pdf

Slide 18

Treatment-Emergent Adverse Events  Preferred Term All Placebo (N=16) n (%) All PB2452 (N=48) n (%) Total Number of TEAEs 3 27 Number of volunteers with at Least 1 TEAE 2 (12.5) 17 (35.4) Infusion site bruising 0 4 (8.3) Medical device site reaction 0 3 (6.3) Infusion site extravasation 0 2 (4.2) Vessel puncture site bruise 0 2 (4.2) Abdominal pain 0 1 (2.1) Acute respiratory failure 0 1 (2.1) Alcohol poisoning 0 1 (2.1) Blood urine present 0 1 (2.1) Conjunctivitis 0 1 (2.1) Contusion 1 (6.3) 0 Dizziness 0 1 (2.1) Eyelid irritation 1 (6.3) 0 Gastroenteritis 0 1 (2.1) Hematuria 0 1 (2.1) Infusion site reaction 0 1 (2.1) Musculoskeletal chest pain 1 (6.3) 0 Nasopharyngitis 0 1 (2.1) Oropharyngeal pain 0 1 (2.1) Pharyngitis streptococcal 0 1 (2.1) Pneumonia aspiration 0 1 (2.1) Skin abrasion 0 1 (2.1) Upper limb fracture 0 1 (2.1) Treatment-emergent adverse events were limited mostly to mild injection site issues Bhatt DL, Pollack CV, Weitz JI, et al. Antibody-Based Ticagrelor Reversal Agent in Healthy Volunteers. N Engl J Med 2019;Mar 17:[Epub ahead of print].

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PB2452 Clinical Development Plan Based on FDA Accelerated Approval Pathway Regulatory Strategy Based on Pre-IND Discussion of Accelerated Approval Phase 2a trial to confirm dosing in an older, healthy-for-age population Large Phase 2b trial will develop BLA safety database Phase 3 non-randomized trial conducted largely in parallel with Phase 2 Initial approval based on platelet aggregation biomarker SAD: healthy subjects BLA US Approval Clinical Studies BLA enabling data Phase 1 ✔ Major Bleeding and Urgent Surgery Phase 3 Ph2b: ~200 healthy older subjects Phase 2 FDA Interim analysis for BLA submission Ph2a: healthy older subjects

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Continued Long Term Unit Growth of Ticagrelor Fueled by PB2452 approval Brilinta/Brilique sales in 2018 were $1.32B and growing (+22% Y/Y) Patient growth drives Y/Y revenue growth in all regions: EU (+18%), US (+16%), Emerging Markets (+46%) In February 2019, Brilinta Phase III THEMIS1 trial met primary endpoint in patients with established coronary artery disease and type-2 diabetes Brilinta Phase III THALES2 trial in stroke expected to readout in 2020 Ticagrelor Differentiation vs. clopidogrel Efficacy ✔ ✔ ✔ Safety -- (no reversal agent) ✔ ✔ Price O (branded vs. generic) O (branded vs. generic) ✔ Now Post PB2452 Launch Post LOE of ticagrelor https://www.astrazeneca.com/media-centre/press-releases/2019/brilintas-phase-iii-themis-trial-met-primary-endpoint-in-patients-with-established-coronary-artery-disease-and-type-2-diabetes-25022019.html https://clinicaltrials.gov/ct2/show/study/NCT03354429 Copyright © 2019 PhaseBio Pharmaceuticals, Inc. All Rights Reserved

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PB2452 Program Summary and Next Steps Phase 1 trial achieved clinically-important immediate and sustained reversal of ticagrelor Well tolerated and no PB2452-related SAEs Product profile: Immediate and sustained reversal of ticagrelor antiplatelet effects Major bleeding requires immediate and sustained reversal Duration of reversal dependent on infusion length Next steps for program Phase 2a study to confirm most appropriate dose and dose regimen in healthy older subjects Initiation of large Phase 2b study to support BLA safety database

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Elastin-Like Polypeptide Technology (ELP) – Engine for Growth

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PROLONGED CIRCULATING HALF-LIFE Repeating Sequence of Human Elastin Peptides VPGXG Peptide/Protein (VIP, GLP1, etc.) Active Moiety “Biopolymer” n UP TO 200x INCREASE IN ½ LIFE Proprietary Elastin-Like Polypeptide (ELP) Technology Growth Engine for PhaseBio Preclinical Pipeline ↑ Temperature COACERVATION DELIVERS SLOW RELEASE Inside Body Non-Soluble ELP WEEKLY OR MONTHLY DOSING Outside Body Highly Soluble ELP Pharmacokinetics Slower rate of bioavailability Ease of Administration Patient Compliance IMPROVING

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ELP: A Highly Flexible Technology for Modulating Pharmacokinetics VERSATILE: MANY ACTIVE MOIETIES POSSIBLE Peptides or proteins can be genetically fused to N- or C-terminus1, or both. Chemical conjugation to small molecules or peptides LOW COST MANUFACTURING Can be produced in E.coli, yeast or mammalian cells FLEXIBLE EXPOSURE ELP engineering enables exposures ranging from weekly or monthly to rapid uptake (e.g. prandial insulin) WELL TOLERATED Well characterized across multiple clinical programs CORE ELP TECHNOLOGY https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3622222/

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PB1046 - Once Weekly Vasoactive Intestinal Peptide (VIP) Analog for Pulmonary Arterial Hypertension

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High Unmet Need in an Orphan Disease Primary Pulmonary Arterial Hypertension (PAH, WHO Group 1 PH) High unmet need for novel disease-modifying PAH therapies for greater efficacy All 3 approved drug classes in PAH are vasodilators: prostacyclin, endothelin, and nitric oxide pathways Patients inevitably continue to decline and die on standard of care VIP addresses PAH vasoconstriction, progressive vascular remodeling, and right heart failure McGlaughlin et al. (2015) J. Am. Coll. Cardiol., 65:18

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PB1046: Harnessing VIP to Create a Stable, Long-Acting Drug PRECLINICAL STUDIES Support Clinical Development for: Pulmonary Arterial Hypertension DMD Cardiomyopathy Heart Failure (Chemotherapy-Induced HF or HFpEF) Cystic Fibrosis MECHANISM OF ACTION VIA VPAC2 RECEPTOR Potent vasodilator Anti-inflammatory and anti-fibrotic Cardiac support through increased inotropy and lusitropy VIP as a THERAPEUTIC AGENT VPAC2 VPAC1 Half-Life ~60 Hours in Humans PB1046 VPAC2 VPAC1 VIP Peptide Half-Life ~ 1 minute in Humans

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PHASE 1 Studies Completed PAH PHASE 2 Studies Well tolerated for a week over broad range of exposure; no drug-related SAEs Prolonged PK/PD profile over 1 week VIP activity confirmed (Systolic and Diastolic BP lowering) Well tolerated across dose range; no drug-related SAEs Replicated PK/PD from SAD over 4 weekly SC injections VIP activity reproduced in HFrEF patients on SOC COMPLETED COMPLETED SAD study in HTN patients washed off meds 4-week MAD study in HFrEF patients on SOC PB1046 Clinical Development Activities to Date Have Supported Advancement into a Phase 2b PAH Efficacy Study Open-Label Phase 2a CardioMEMS in PAH study: Safety and Hemodynamics Phase 2b PAH Efficacy 16-Wk Randomized, Controlled Study PHASE 2b STUDY ACTIVELY ENROLLING CardioMEMS Open-Label PAH Study N = 3 patients, dosed weekly for 8 wks, followed by extension No longer enrolling patients Realtime PA pressure and other hemodynamic monitoring Initial data show improved hemodynamics One drug-related SAE reported in extension portion of open-label pilot study Phase 2b PAH 16 wk randomized, controlled study N = ~60 class II/III PAH patients, dosed weekly x 16 weeks Individual dose titration to MTD Efficacy endpoints PVR via RHC, 6MWD Extension study to follow COMPLETED

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PB1046 Single Ascending Dose Study PK and PD Support Once-Weekly SC Administration Single subcutaneous injections in hypertensive patients washed off medications Well tolerated, week-long PK, dose-dependent VIP activity observed Supports weekly SC dosing in multi-dose studies Serum Concentration PB1046 (ng/mL) Slow Release Kinetics (Tmax 48 h) PK HALF-LIFE ~60 HOURS VIP EFFECT ON SYSTOLIC BLOOD PRESSURE Restart Background Anti-hypertensive Therapy 14 21 28

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PB1046 Multiple Ascending Dose Study Multi-Dose Safety and PK/PD Confirmed in HFrEF Patients MAD in HFrEF completed 4Q2017 Weekly SC injections x 4 weeks in 29 HF patients maintained on SOC meds Well tolerated in a sick patient population on multiple vasoactive medications Prolonged PK profile replicated in heart failure patients Dose-related systolic BP reduction confirms durable VIP activity PB1046 Induced Sustained Reduction in Systolic BP p = 0.043, placebo vs PB1046 1.2 mg/kg

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PB1046 Phase 2b PAH Study Actively Recruiting PAH WHO functional class II/III subjects on two drug oral SOC therapy 16 week randomized, double-blinded, controlled study with extension Primary endpoints: Pulmonary vascular resistance (PVR) via RHC, 6MWD, safety Designed to support placebo-controlled Phase 3 registrational study PhaseBio awarded NIH/NHLBI SBIR R44 grant to support PAH program $2.8M award supports CardioMEMS and Phase 2b PAH studies Open-label extension PB1046 individually titrated to Maximum Tolerated Dose Weekly SC injection x 16 weeks PB1046 Minimum Effective Dose with mock dose titration Weekly SC injection x 16 weeks

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