Fergal Stack - 25 Aug 2026 Form 4 Insider Report for Happen, Inc. (HAPN)

Reporting relationship: SVP, Corporate Controller
Issuer ticker: HAPN
Reported as of: 25 Aug 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 27 Aug 2026, 18:17:40 UTC
Prior SEC filing: 20 Aug 2026
Source filing: View source filing
Reporting owner signature: /s/ Bhavit Sheth, attorney-in-fact

Key filing fact

Fergal Stack filed Form 4 for Happen, Inc. (HAPN) on 27 Aug 2026.

Key facts

This page summarizes Fergal Stack's Form 4 filing for Happen, Inc. (HAPN).
7 reported transactions and 3 derivative rows are listed below.
Accepted by SEC: 27 Aug 2026, 18:17.

Change

Previous filing in this sequence was filed on 20 Aug 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001714400 Primary reporting owner

Stack Fergal

Relationship: SVP, Corporate Controller
Address: C/O HAPPEN, INC., 88 KEARNY ST., SUITE 600, SAN FRANCISCO
Signature: /s/ Bhavit Sheth, attorney-in-fact
Signature date: 27 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

HAPN transaction

Common Stock

Options Exercise

Transaction value
Shares: +3,117
Change %: +7.8%
Price: $0.000000^*
Shares after: 43,094
Date: 25 Aug 2026
Ownership: Direct
Footnotes: F1

HAPN transaction

Common Stock

Options Exercise

Transaction value
Shares: +1,907
Change %: +4.4%
Price: $0.000000^*
Shares after: 45,001
Date: 25 Aug 2026
Ownership: Direct
Footnotes: F1

HAPN transaction

Common Stock

Options Exercise

Transaction value
Shares: +1,569
Change %: +3.5%
Price: $0.000000^*
Shares after: 46,570
Date: 25 Aug 2026
Ownership: Direct
Footnotes: F1

HAPN transaction

Common Stock

Tax liability

Transaction value
Shares: -2,682
Change %: -5.8%
Price: $18.25^*
Shares after: 43,888
Date: 25 Aug 2026
Ownership: Direct
Footnotes: F2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

HAPN transaction Derivative

Restricted Stock Unit (RSU)

Options Exercise

Transaction value
Shares: -3,117
Change %: -33%
Price: $0.000000^*
Shares after: 6,235
Date: 25 Aug 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 3,117
Exercise price: $0.000000
Footnotes: F1, F3, F4

HAPN transaction Derivative

Restricted Stock Unit (RSU)

Options Exercise

Transaction value
Shares: -1,907
Change %: -14%
Price: $0.000000^*
Shares after: 11,442
Date: 25 Aug 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,907
Exercise price: $0.000000
Footnotes: F1, F4, F5

HAPN transaction Derivative

Restricted Stock Unit (RSU)

Options Exercise

Transaction value
Shares: -1,569
Change %: -9.1%
Price: $0.000000^*
Shares after: 15,695
Date: 25 Aug 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,569
Exercise price: $0.000000
Footnotes: F1, F4, F6

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 6 footnotes

Footnote F1

Each restricted stock unit ("RSU") represents the contingent right to receive, upon vesting of the RSU, one share of the Issuer's common stock.

Footnote F2

Does not represent a sale of shares. Represents the number of shares withheld by the Issuer to cover tax withholding obligations in connection with the vesting of RSUs.

Footnote F3

The RSUs vested as to 8.33% of the total shares on May 25, 2024, with an additional 8.33% of the total shares vesting quarterly thereafter, subject to continued service through each vesting date.

Footnote F4

Not applicable.

Footnote F5

The RSUs vested as to 8.33% of the total shares on May 25, 2025, with an additional 8.33% of the total shares vesting quarterly thereafter, subject to continued service through each vesting date.

Footnote F6

The RSUs vested as to 8.33% of the total shares on May 25, 2026, with an additional 8.33% of the total shares vesting quarterly thereafter, subject to continued service through each vesting date.