Derivative exercise or conversion — not an open-market buy.
Written from the filing's own figures. OQRO describes what was reported and never tells you what to buy or sell
View the official recordSEC Form 4 — Statement of Changes in Beneficial OwnershipAll the details
Dates, kept separate
Transaction date
May 14, 2026
Reporting period
Not applicable
Filed with the SEC
May 15, 2026
DirectorOption exercise
Context
Classification
option exercise
Code M — exercise or conversion of a derivative security
Planned / mechanical clue
Footnote references vesting of compensation awards
Only flagged when a footnote says so; never inferred
Source receipt
Record ID
0001269428-26-000002
Filed / recorded
May 15, 2026, 8:25 PM UTC
Added to OQRO
Oct 6, 2026, 10:14 PM UTC
Parser
form4-xml-v2
Data quality
Verified: identifiers matched exactly
Issuer
Certara, Inc.
Issuer CIK
1827090
Ticker
CERT
Reporting person
Matthew M Walsh
Relationship
Director
Security
Restricted Stock Units
Table
Derivative (Table II)
Transaction date
May 14, 2026
Transaction code
M
Shares / units
15,757
Price per share
$0.00
Acquired / disposed
Disposed (D)
Shares owned after
0
Ownership form
Direct
Amendment
No
Footnotes from the filing
Each restricted stock unit ("RSU") was granted on May 21, 2025, under the Certara, Inc. 2020 Incentive Plan ("2020 Incentive Plan") entitling the reporting person to receive one share of the issuer's common stock per RSU. The RSUs vested and were converted to common stock on May 14, 2026, the day of the issuer's annual meeting.