STOCK TITAN
  1. Home
  2. Sec-filings
  3. RGEN
  4. [Form 4] REPLIGEN CORP Insider Trading Activity

[Form 4] REPLIGEN CORP Insider Trading Activity

Filing Impact
(Very High)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

Repligen Corporation director reported several transactions in company stock. On 11/13/2025, the director sold multiple blocks of common stock in open-market transactions at weighted average prices ranging from $151.01 to $157.11, each sale covering different share amounts. After these sales, the director beneficially owned 80,743 shares of Repligen common stock in direct form. The director also exercised a stock option for 2,952 shares at an exercise price of $33.87, which increased directly held shares while reducing the option position.

Positive

  • None.

Negative

  • None.
Insider Hunt Anthony
Role Director
Sold 20,000 shs ($3.09M)
Type Security Shares Price Value
Exercise Stock Option (Right to Buy) 2,952 $0.00 --
Sale Common Stock 1,784 $151.01 $269K
Sale Common Stock 2,100 $152.17 $320K
Sale Common Stock 2,923 $153.14 $448K
Sale Common Stock 2,500 $154.32 $386K
Sale Common Stock 3,000 $155.45 $466K
Sale Common Stock 5,737 $156.22 $896K
Sale Common Stock 1,956 $157.11 $307K
Exercise Common Stock 2,952 $33.87 $100K
Holdings After Transaction: Stock Option (Right to Buy) — 14,760 shares (Direct); Common Stock — 98,959 shares (Direct)
Footnotes (1)
  1. $151.01 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $150.53 to $151.23, 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. $152.17 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $151.57 to $152.45, 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. $153.14 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $152.64 to $153.62, 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. $154.32 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $153.66 to $154.60, 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. $155.45 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $154.78 to $155.78, 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. $156.22 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $155.79 to $156.76, 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. $157.11 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $156.90 to $157.55, 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. 14,760 of the shares underlying this option have vested. The remaining shares vest as follows: 2,952 shares on March 1, 2026, and 2,952 shares on March 1, 2027.
Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4 UNITED 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).
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*
Hunt Anthony
(Last) (First) (Middle)
C/O REPLIGEN CORPORATION
41 SEYON ST., BLDG 1, STE 100
(Street)
WALTHAM MA 02453
(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
REPLIGEN CORP [ RGEN ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X Director 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
11/13/2025
4. If Amendment, Date of Original Filed (Month/Day/Year)
 6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
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)
Code V Amount (A) or (D) Price
Common Stock 11/13/2025 S 1,784 D $151.01(1) 98,959 D
Common Stock 11/13/2025 S 2,100 D $152.17(2) 96,859 D
Common Stock 11/13/2025 S 2,923 D $153.14(3) 93,936 D
Common Stock 11/13/2025 S 2,500 D $154.32(4) 91,436 D
Common Stock 11/13/2025 S 3,000 D $155.45(5) 88,436 D
Common Stock 11/13/2025 S 5,737 D $156.22(6) 82,699 D
Common Stock 11/13/2025 S 1,956 D $157.11(7) 80,743 D
Common Stock 11/13/2025 M 2,952 A $33.87 83,695 D
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)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Option (Right to Buy) $33.87 11/13/2025 M 2,952 (8) 02/29/2028 Common Stock 2,952 $0 14,760 D
Explanation of Responses:
1. $151.01 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $150.53 to $151.23, 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.
2. $152.17 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $151.57 to $152.45, 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.
3. $153.14 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $152.64 to $153.62, 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.
4. $154.32 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $153.66 to $154.60, 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.
5. $155.45 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $154.78 to $155.78, 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.
6. $156.22 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $155.79 to $156.76, 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.
7. $157.11 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $156.90 to $157.55, 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.
8. 14,760 of the shares underlying this option have vested. The remaining shares vest as follows: 2,952 shares on March 1, 2026, and 2,952 shares on March 1, 2027.
/s/ Jennifer Carmichael (Attorney in Fact) 11/14/2025
** Signature of Reporting Person Date
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.

Source: View Original Filing on SEC EDGAR