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US nonprofit · EIN 300121946 · San Francisco, CAiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 300121946) - NTEE activity code, address.Board and officers IRS Form 990 annual filings, Part VII (directors, trustees, officers, key employees), read year by year to observe time served.Latest return IRS Form 990 series e-file data - 990 for the year to 30 April 2025: assets, liabilities, staff, website, telephone, pay.Renewal outlook Computed by Governance Register from the observed filing history and filed revenue. Not a statement that the organisation is recruiting.Principal officer IRS Form 990-N (e-Postcard) - principal officer named for tax year 2012.Deductibility IRS Publication 78 data (code PC), downloaded 18 October 2026.Licence US Federal Government public domain.How we handle data

Tremorsync Inc

Donations deductible
Revenue
$451k
year to 30 April 2025
Expenses
$404k
year to 30 April 2025
Total assets
$161k
$20k liabilities
Net assets
$140k
assets less liabilities
Directors and trustees
5
6.2 years on average
Staff
0
employees, year to 30 April 2025
Left since last filing
0
no seats appear to have opened
Voting members
5
reported in Part VI
How am I connected?

Tremorsync Inc's network

5 people2 organisationsi5 people and 2 organisations on this map.The large node is the subject of this page. Solid lines are what the register itself records (5). Violet dotted lines (2) are likely: the same full name sits on the current board of another organisation in the same register and region. Form 990 filings give names without a person identifier; SEC insider filings carry a CIK. It may be a different person.

The board

5 listediTime on the board is observed from the annual filings: the IRS files no appointment date, so the bar counts years from the first filing the person appears on - a lower bound, not a filed start date. Names are exactly as filed. The IRS publishes no person identifier, so this edition does not yet link a person across organisations in the tables. The network map shows same-name matches as likely links only, never as confirmed.Time served and departures are observed across annual filings. Observed time served is a lower bound - a member may have joined before the first year on record. The organisation reported 5 voting members of its governing body on its latest Form 990 Part VI, which matches the board listed here.
NameRole as filedSinceOn the board
Chantal HerseyDirector2021
5 yrs
Lindsey WolkinDirector2019
7 yrs
Martina LeeDirector2023
3 yrs
Sandra CheungPresident2019
7 yrs
Tom KillileaTreasurer2019
7 yrs
Under 5 years5 to 6 years6 years or more

Pay and hours

year to 30 April 2025iFrom Part VII of the Form 990: compensation reported for each officer, director, trustee, key employee and highest-paid staff member, and the average hours a week they report. Most board members are unpaid; a blank means nothing was reported. Pay from related organisations is shown separately.
NameTitle as filedHours a weekPay from the organisationRelated organisationsOther
Thomas Killilea IIITreasurer1$0
Sandra CheungPresident1$0
Martina LeeSecretary1$0
Chantal HerseyDirector1$0
Lindsey WolkinDirector1$0

No pay was reported for anyone in Part VII on this return.

About

Legal name
Tremorsync Inc
EIN
300121946
Address
Po Box 78054, San Francisco, CA, 94107-8054
State
California
Mission
The Tremors Youth Synchronized Ice Skating Team of San Francisco Bay Area (Tremorsync, Inc.) supports the healthy development of children and young people from diverse economic and social backgrounds by providing quality youth sports opportunities and a productive team environment. The Tremors enables youth from many different Bay Area neighborhoods to come together, share their passion of... (as filed on the Form 990)
Activity (NTEE)
N68 Recreation and sports
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Recreation & Sports
Size band
4 (IRS master file code)
Formed
2002
Principal officer
Thomas Killilea III (as named on the Form 990)
IRS ruling date
1 January 2003
Status
Code 01 (unconditional exemption)
Form 990 filings on record
5, latest 2024
IRS Publication 78
PC (contributions deductible)

Most connected

Longest observed on the filings

≥7years on the filingsLindsey Wolkin
≥7years on the filingsSandra Cheung
≥7years on the filingsTom Killilea
≥5years on the filingsChantal Hersey

Latest return

year to 30 April 2025iFigures from the newest Form 990 or 990-EZ in the IRS e-file releases of 2025 and 2026, for the year ending 30 April 2025. US dollars, as filed.
Total assets
$161k
Total liabilities
$20k
Net assets or fund balances
$140k
Contributions and grants received
$18k
Program service revenue
$432k
Grants and similar paid out
$596
Employees
0