Fergal Stack
SVP, Corporate Controller at Happen, Inc. (HAPN)
Fergal Stack has filed 32 insider reports with the SEC since March 2021, as SVP and corporate Controller at Happen, Inc. (HAPN). In the last 12 months Fergal Stack sold $4.32M of stock on the open market. The latest filing, on August 27, 2026, reports shares withheld for taxes or exercise price and exercise or conversion of a derivative at Happen, Inc. (HAPN).
- Filings
- 32
- Companies
- 1
- Bought on market
- $51.8K
- Sold on market
- $4.66M
Companies where Fergal Stack is an insider
| Company | Role | Shares held | Bought | Sold | Avg buy | Price now | Last filing |
|---|---|---|---|---|---|---|---|
| HAPN Happen, Inc. | SVP, Corporate Controller | 43,888 | $51.8K | $4.66M | $5.18 | $15.96+208% | Aug 27, 2026 |
Shares held: common shares owned directly after the latest filing that states it. Avg buy: open-market purchase dollars divided by shares bought, every filing on record. Price now: the latest daily close, against the average buy price.
Every filing
- Aug 25, 2026HAPNSVP, Corporate Controller Stack Fergal converted options into 6,593 shares and covered exercise/tax liability with 2,682 shares, increasing direct ownership by 10% to 43,888 units (for withholding tax)Form 4Shares withheld for taxes or exercise priceExercise or conversion of a derivative
- Aug 20, 2026-$2.13MHAPNSVP, Corporate Controller Stack Fergal sold $2,132,597 worth of shares (115,000 units at $18.54) as part of a pre-agreed trading plan, decreasing direct ownership by 74% to 39,977 unitsForm 4Open-market sale10b5-1 plan
- Jul 1, 2026-$1.05MHAPNSVP, Corporate Controller Stack Fergal sold $1,050,690 worth of shares (50,000 units at $21.01) as part of a pre-agreed trading plan, decreasing direct ownership by 24% to 154,977 unitsForm 4Open-market sale10b5-1 plan
- Jun 16, 2026-$1.14MHAPNSVP, Corporate Controller Stack Fergal sold $1,140,228 worth of shares (60,000 units at $19.00) as part of a pre-agreed trading plan, decreasing direct ownership by 23% to 204,977 unitsForm 4Open-market sale10b5-1 plan
- May 25, 2026HAPNSVP, Corporate Controller Stack Fergal converted options into 6,593 shares and covered exercise/tax liability with 2,680 shares, increasing direct ownership by 1% to 264,977 units (tax liability)Form 4Shares withheld for taxes or exercise priceExercise or conversion of a derivative
- Mar 5, 2026HAPNSEC Form 4 filed by SVP, Corporate Controller Stack FergalForm 4Grant or award
- Feb 25, 2026HAPNSVP, Corporate Controller Stack Fergal covered exercise/tax liability with 4,807 shares and converted options into 10,671 shares, increasing direct ownership by 2% to 261,064 unitsForm 4Shares withheld for taxes or exercise priceExercise or conversion of a derivative
- Nov 25, 2025HAPNSVP, Corporate Controller Stack Fergal converted options into 10,670 shares and covered exercise/tax liability with 4,304 shares, increasing direct ownership by 3% to 255,200 unitsForm 4Shares withheld for taxes or exercise priceExercise or conversion of a derivative
- Aug 25, 2025HAPNSVP, Corporate Controller Stack Fergal converted options into 10,669 shares and covered exercise/tax liability with 4,300 shares, increasing direct ownership by 3% to 248,834 unitsForm 4Shares withheld for taxes or exercise priceExercise or conversion of a derivative
- May 25, 2025HAPNSVP, Corporate Controller Stack Fergal converted options into 10,670 shares and covered exercise/tax liability with 4,300 shares, increasing direct ownership by 3% to 242,465 unitsForm 4Shares withheld for taxes or exercise priceExercise or conversion of a derivative
- Mar 5, 2025HAPNSEC Form 4 filed by SVP, Corporate Controller Stack FergalForm 4Grant or award
- Feb 25, 2025HAPNSVP, Corporate Controller Stack Fergal converted options into 11,882 shares and covered exercise/tax liability with 5,338 shares, increasing direct ownership by 3% to 236,095 unitsForm 4Shares withheld for taxes or exercise priceExercise or conversion of a derivative
- Nov 25, 2024HAPNSVP, Corporate Controller Stack Fergal converted options into 11,880 shares and covered exercise/tax liability with 4,737 shares, increasing direct ownership by 3% to 229,551 unitsForm 4Shares withheld for taxes or exercise priceExercise or conversion of a derivative
- Aug 25, 2024HAPNSVP, Corporate Controller Stack Fergal converted options into 11,880 shares and covered exercise/tax liability with 4,676 shares, increasing direct ownership by 3% to 222,408 unitsForm 4Shares withheld for taxes or exercise priceExercise or conversion of a derivative
- May 25, 2024HAPNStack Fergal converted options into 11,881 shares and covered exercise/tax liability with 4,676 shares, increasing direct ownership by 3% to 215,204 unitsForm 4Shares withheld for taxes or exercise priceExercise or conversion of a derivative
- Mar 21, 2024HAPNSEC Form 4 filed by Stack FergalForm 4Grant or award
- Feb 25, 2024HAPNStack Fergal converted options into 18,304 shares and covered exercise/tax liability with 8,020 shares, increasing direct ownership by 5% to 207,999 unitsForm 4Shares withheld for taxes or exercise priceExercise or conversion of a derivative
- Nov 25, 2023HAPNStack Fergal converted options into 18,303 shares and covered exercise/tax liability with 7,204 shares, increasing direct ownership by 6% to 197,715 unitsForm 4Shares withheld for taxes or exercise priceExercise or conversion of a derivative
- Oct 31, 2023+$51.8KHAPNStack Fergal bought $51,763 worth of shares (10,000 units at $5.18), increasing direct ownership by 6% to 186,616 unitsForm 4/AOpen-market purchase
- Aug 25, 2023HAPNSEC Form 4: Stack Fergal converted options into 18,305 shares and covered exercise/tax liability with 7,204 shares, increasing direct ownership by 7% to 176,616 unitsForm 4Shares withheld for taxes or exercise priceExercise or conversion of a derivative
- May 25, 2023HAPNSEC Form 4 filed by Stack FergalForm 4Shares withheld for taxes or exercise priceExercise or conversion of a derivative
- Mar 12, 2023HAPNSEC Form 4 filed by Stack FergalForm 4Grant or award
- Feb 25, 2023HAPNSEC Form 4: Stack Fergal converted options into 15,054 shares and covered exercise/tax liability with 5,967 shares, increasing direct ownership by 6% to 154,416 units to satisfy withholding taxForm 4Shares withheld for taxes or exercise priceExercise or conversion of a derivative
- Nov 28, 2022-$63KHAPNSEC Form 4: Stack Fergal converted options into 15,055 shares and sold $62,960 worth of shares (6,240 units at $10.09), increasing direct ownership by 6% to 145,329 units (tax withholding)Form 4Exercise or conversion of a derivativeOpen-market sale
- Aug 26, 2022-$83.7KHAPNSEC Form 4: Stack Fergal converted options into 15,054 shares and sold $83,723 worth of shares (6,040 units at $13.86), increasing direct ownership by 7% to 136,514 units (withholding obligation)Form 4Exercise or conversion of a derivativeOpen-market sale
- May 26, 2022-$76KHAPNSEC Form 4: Stack Fergal converted options into 15,053 shares and sold $76,004 worth of shares (5,405 units at $14.06), increasing direct ownership by 8% to 127,500 units to cover withholding taxForm 4Exercise or conversion of a derivativeOpen-market sale
- Mar 13, 2022HAPNSEC Form 4 filed by Stack FergalForm 4Grant or award
- Feb 28, 2022-$114KHAPNSEC Form 4: Stack Fergal converted options into 15,484 shares and sold $113,862 worth of shares (6,127 units at $18.58), increasing direct ownership by 9% to 117,852 units (tax liability)Form 4Exercise or conversion of a derivativeOpen-market sale
- Nov 25, 2021HAPNSEC Form 4: Stack Fergal converted options into 15,480 shares and covered exercise/tax liability with 6,287 shares, increasing direct ownership by 9% to 108,495 units to satisfy withholding taxForm 4Shares withheld for taxes or exercise priceExercise or conversion of a derivative
- Aug 25, 2021HAPNSEC Form 4: Stack Fergal converted options into 20,094 units of Common Stock and covered exercise/tax liability with 8,444 units of Common Stock, increasing direct ownership by 13% to 99,302 units to satisfy withholding obligationForm 4Shares withheld for taxes or exercise priceExercise or conversion of a derivative
- Mar 9, 2021HAPNSEC Form 4 filed by Fergal StackForm 4Grant or award
- Feb 25, 2021HAPNSEC Form 4: Fergal Stack exercised 15,650 units of Common Stock at a strike of $0.00 and disposed of $78,419 worth of Common Stock (6,739 units at $11.64), increasing ownership by 13% to 76,005 unitsForm 4Shares withheld for taxes or exercise priceExercise or conversion of a derivative
Compare Fergal Stack with
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- Fergal Stack vs Steven C Mattics1 shared
- Fergal Stack vs Andrew LaBenne1 shared
- Fergal Stack vs Michael P Zeisser1 shared
Other insiders at the same companies
- Jordan ChengHAPN
- Erin SelleckHAPN
- Scott SanbornHAPN
- Steven C MatticsHAPN
- Andrew LaBenneHAPN
- Michael P ZeisserHAPN
- Janey WhitesideHAPN
- Kathryn ReimannHAPN
- Timothy J MayopoulosHAPN
- Allan R LandonHAPN
- Stephen M CutlerHAPN
- Syed Faiz AhmadHAPN
- Dov Eytan HaselkornHAPN
- Annie ArmstrongHAPN
- John C. MorrisHAPN
Questions about Fergal Stack
- What is Fergal Stack's role at Happen, Inc.?
- Fergal Stack reports to the SEC as SVP and corporate Controller at Happen, Inc. (HAPN), according to the latest filing on August 27, 2026.
- How many shares does Fergal Stack own?
- After the latest filing that states it, Fergal Stack directly owned 43,888 shares of Happen, Inc. (HAPN). Shares held through trusts, funds or family members are reported separately and are not counted here.
- Has Fergal Stack bought or sold stock recently?
- The most recent open-market purchase was on October 31, 2023: bought 10,000 shares of LendingClub Corp (HAPN) for $51.8K at an average of $5.18. The most recent open-market sale was on August 20, 2026: sold 115,000 shares of Happen, Inc. (HAPN) for $2.13M at an average of $18.54.
- How do I get alerts when Fergal Stack files?
- Follow Fergal Stack on Quantisnow and you get an email, and a phone notification on Plus, within minutes of each new Form 4 or Form 5, and of each Form 144 notice of a planned sale. Fergal Stack filed 2 times in the last 90 days.
From SEC Forms 3, 4, 5 and 144 filed by Fergal Stack (SEC CIK 0001714400). Totals count each trade once, skipping amendments whose original is on file, from Mar 2, 2021 on. View on SEC EDGAR