STOCK TITAN

Emergent BioSolutions (NYSE: EBS) director sells shares and receives new grants

Filing Impact
(Moderate)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

Emergent BioSolutions director Donald W. DeGolyer reported both equity grants and tax-related share sales. On April 30, he received 25,344 restricted stock units as an annual board grant and 11,296 stock options with a $7.99 exercise price, both vesting one year after grant if he remains on the board.

In connection with RSUs that vested on April 29, he sold a total of 15,481 common shares in open-market transactions on May 1 under a pre-arranged Rule 10b5-1 trading plan to satisfy tax obligations. Following these sales, he directly holds 129,721 common shares, along with the newly granted unvested options.

Positive

  • None.

Negative

  • None.
Insider DeGolyer Donald W
Role null
Sold 15,481 shs ($130K)
Type Security Shares Price Value
Sale Common Stock 14,527 $8.36 $121K
Sale Common Stock 954 $8.96 $9K
Grant/Award Stock Option (Right to Buy) 11,296 $0.00 --
Grant/Award Common Stock 25,344 $0.00 --
Holdings After Transaction: Common Stock — 130,675 shares (Direct, null); Stock Option (Right to Buy) — 11,296 shares (Direct, null)
Footnotes (1)
  1. Represents an annual grant of restricted stock units ("RSUs") granted under the Company's Stock Incentive plan, as amended and restated, for Board and Committee service. Each RSU represents a right to receive one share of Emergent BioSolutions Inc. (the "Company") common stock upon vesting. The shares underlying the RSUs will vest on the day prior to the one-year anniversary of the grant date ("Annual Grant Vesting Date"), subject to the reporting person remaining a member of the Company's board of directors through the Annual Grant Vesting Date. Represents the number of shares sold by the Reporting Person. Shares were sold pursuant to a Rule 10b5-1 trading plan, dated August 11, 2025, for the purpose of satisfying tax obligations relating to the vesting of RSUs on April 29, 2026. The price reported in Column 4 is a weighted average price for sales executed on the same day within a one-dollar price range. These shares were sold in multiple transactions at prices ranging from $7.78 to $8.64, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. The price reported in Column 4 is a weighted average price for sales executed on the same day within a one-dollar price range. These shares were sold in multiple transactions at prices ranging from $8.80 to $8.99, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. Consists of stock options granted under the Company's Stock Incentive Plan, as amended and restated, for Board and Committee service. The shares underlying the options will vest on the Annual Grant Vesting Date, subject to the reporting person remaining a member of the Company's board of directors through the Annual Grant Vesting Date. Each stock option represents a right to purchase one share of the Company's common stock upon vesting at the exercise price. The number of options granted was determined by multiplying 25% of the total non-employee director compensation value, and then dividing by the Black-Scholes value of a single option calculated as of the date of the grant.
Shares sold 15,481 shares Open-market sales on May 1, 2026
Sale price (first block) $8.36/share Weighted average; trades from $7.78 to $8.64
Sale price (second block) $8.96/share Weighted average; trades from $8.80 to $8.99
RSUs granted 25,344 units Annual grant for board and committee service on Apr. 30, 2026
Stock options granted 11,296 options Annual grant on Apr. 30, 2026, for board service
Option exercise price $7.99/share Exercise price for 11,296 stock options expiring Apr. 30, 2033
Shares held after transactions 129,721 shares Direct common stock holdings after May 1, 2026 sales
restricted stock units ("RSUs") financial
"Represents an annual grant of restricted stock units ("RSUs") granted under the Company's Stock Incentive plan"
Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.
Rule 10b5-1 trading plan regulatory
"Shares were sold pursuant to a Rule 10b5-1 trading plan, dated August 11, 2025"
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
Stock Incentive Plan financial
"granted under the Company's Stock Incentive plan, as amended and restated, for Board and Committee service"
A stock incentive plan is a company program that gives employees or directors pieces of ownership or the right to buy shares over time, similar to receiving a bonus paid in company stock instead of cash. Investors pay attention because these plans align staff incentives with long‑term company performance but can also dilute existing shareholders and affect reported profits when grants are expensed, so they influence both ownership percentages and financial results.
weighted average price financial
"The price reported in Column 4 is a weighted average price for sales executed on the same day"
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
Black-Scholes value financial
"dividing by the Black-Scholes value of a single option calculated as of the date of the grant"
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
X
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
DeGolyer Donald W

(Last)(First)(Middle)
300 PROFESSIONAL DR

(Street)
GAITHERSBURG MARYLAND 20879

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Emergent BioSolutions Inc. [ EBS ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
04/30/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock04/30/2026A25,344(1)A$0145,202D
Common Stock05/01/2026S14,527(2)D$8.36(3)130,675D
Common Stock05/01/2026S954(2)D$8.96(4)129,721D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (Right to Buy)$7.9904/30/2026A11,296 (5)04/30/2033Common Stock11,296(6)$011,296D
Explanation of Responses:
1. Represents an annual grant of restricted stock units ("RSUs") granted under the Company's Stock Incentive plan, as amended and restated, for Board and Committee service. Each RSU represents a right to receive one share of Emergent BioSolutions Inc. (the "Company") common stock upon vesting. The shares underlying the RSUs will vest on the day prior to the one-year anniversary of the grant date ("Annual Grant Vesting Date"), subject to the reporting person remaining a member of the Company's board of directors through the Annual Grant Vesting Date.
2. Represents the number of shares sold by the Reporting Person. Shares were sold pursuant to a Rule 10b5-1 trading plan, dated August 11, 2025, for the purpose of satisfying tax obligations relating to the vesting of RSUs on April 29, 2026.
3. The price reported in Column 4 is a weighted average price for sales executed on the same day within a one-dollar price range. These shares were sold in multiple transactions at prices ranging from $7.78 to $8.64, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.
4. The price reported in Column 4 is a weighted average price for sales executed on the same day within a one-dollar price range. These shares were sold in multiple transactions at prices ranging from $8.80 to $8.99, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.
5. Consists of stock options granted under the Company's Stock Incentive Plan, as amended and restated, for Board and Committee service. The shares underlying the options will vest on the Annual Grant Vesting Date, subject to the reporting person remaining a member of the Company's board of directors through the Annual Grant Vesting Date. Each stock option represents a right to purchase one share of the Company's common stock upon vesting at the exercise price.
6. The number of options granted was determined by multiplying 25% of the total non-employee director compensation value, and then dividing by the Black-Scholes value of a single option calculated as of the date of the grant.
Remarks:
/s/ Richard S. Lindahl, Attorney-in-fact05/04/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What did Emergent BioSolutions (EBS) director Donald DeGolyer do in this Form 4 filing?

Donald W. DeGolyer reported routine board-related equity activity. He received new RSU and stock option grants, and sold shares in open-market trades under a Rule 10b5-1 plan to cover tax obligations tied to recently vested restricted stock units.

How many Emergent BioSolutions (EBS) shares did Donald DeGolyer sell and at what prices?

He sold 15,481 common shares in two open-market transactions. Weighted average prices were $8.36 and $8.96 per share, with actual trade prices ranging from $7.78 to $8.64 and from $8.80 to $8.99 across multiple executions.

What equity grants did Donald DeGolyer receive from Emergent BioSolutions (EBS)?

He received 25,344 restricted stock units and 11,296 stock options as part of annual non-employee director compensation. Each RSU and option relates to one common share, with the options carrying a $7.99 exercise price and vesting one year after the grant date.

Why were Emergent BioSolutions (EBS) shares sold under Donald DeGolyer’s Rule 10b5-1 plan?

The filing states the sales were executed under a Rule 10b5-1 trading plan dated August 11, 2025. The purpose was to satisfy tax obligations arising from the vesting of restricted stock units on April 29, 2026, rather than discretionary portfolio rebalancing.

How many Emergent BioSolutions (EBS) shares does Donald DeGolyer hold after these transactions?

After the reported sales, he directly owns 129,721 common shares. In addition, he holds 25,344 unvested restricted stock units and 11,296 stock options that may settle into common shares if vesting conditions based on continued board service are met.