Certara CEO buys 24,096 shares at $8.3; total holdings 2.36M

Certara (CERT) reported an insider buy by its CEO.

Rhea-AI Filing Summary

Certara (CERT) reported an insider buy by its CEO. William F. Feehery, who serves as Chief Executive Officer and Director, purchased 24,096.384 shares of Common Stock on 11/11/2025 at $8.3 per share (transaction code P). Following this transaction, his directly held stake stands at 2,360,769.384 shares.

Insights

Insider Transactions Analyst

CEO reported a purchase of CERT shares, modest in size, signaling added exposure; limited direct operational impact.

The filing reports a Code "P" transaction, meaning a purchase of **Common Stock** on 11/11/2025. The CEO acquired **24,096.384** shares at $8.3 per share, bringing direct beneficial ownership to **2,360,769.384** shares. Form 4 discloses changes in insider ownership; this is an increase in direct holdings.

What it means: insider purchases add skin in the game and can align interests with other holders. The disclosure is factual and limited to quantity, price, and resulting ownership. It does not state any trading plan use or any strategic rationale. The action does not alter capital structure, governance, or operations by itself.

Why it matters: insider buying is often viewed constructively, but the effect depends on size and repetition. Watch for additional Form 4s in the coming weeks, any future adoption of Rule 10b5-1 plans, or clustered insider activity. The reported trade date is 11/11/2025 with the signature dated 11/12/2025; subsequent filings through the next quarter could clarify if this is part of a pattern.

Insider Trade Summary

Net Buyer: 24,096.384 shares

Net Buy 1 txn

Insider Feehery William F

Role CHIEF EXECUTIVE OFFICER

Bought 24,096.384 shs ($200K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	24,096.384	$8.30	$200K

Holdings After Transaction: Common Stock — 2,360,769.384 shares (Direct)

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did CERT report on Form 4?

The CEO/Director, William F. Feehery, purchased 24,096.384 shares of Common Stock on 11/11/2025 at $8.3 per share.

How many CERT shares does the insider own after the transaction?

Following the trade, William F. Feehery directly owns 2,360,769.384 shares.

What was the transaction code on the Form 4 for CERT?

The transaction code was P, indicating a purchase of Common Stock.

What is the insider’s relationship to Certara (CERT)?

William F. Feehery is Certara’s Chief Executive Officer and a Director.

Was the ownership marked as direct or indirect?

The filing shows Direct (D) ownership for the reported holdings.

Did the filing indicate a Rule 10b5-1 trading plan?

The form includes a checkbox for Rule 10b5-1 plans, but the provided excerpt does not indicate it was checked.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 11/12/2025 - 04:44 PM Learn about SEC filing dates

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^*

Feehery William F

(Last) (First) (Middle)

C/O CERTARA, INC.

4 RADNOR CORPORATE CENTER, SUITE 350

(Street)

RADNOR PA 19087

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Certara, Inc. [ CERT ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	CHIEF EXECUTIVE OFFICER

3. Date of Earliest Transaction (Month/Day/Year)
11/11/2025

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	11/11/2025		P		24,096.384	A	$8.3	2,360,769.384	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

Explanation of Responses:

	/s/ Daniel Corcoran, as Attorney-in-Fact for William F. Feehery	11/12/2025
	** 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.