Michael Andrew Kumin

CIK 1368414 · last filed 2026-03-06

Michael Andrew Kumin is a corporate insider who has filed 35 SEC Form 4 insider transactions across 5 companies since 2010. The most recent filing, for W, was dated Mar 6, 2026. Across all open-market trades the lifetime net is −$291.0M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $65.3M across reported positions. 16 SEC filings were submitted jointly with CHRISTOPHER S GAFFNEY.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

Disclosed Exposure

$65.28M

Companies

5

Total Filings

35

Lifetime Open-Market Net

-$291.05M

Filer Profile

Reported Address

C/O GREAT HILL PARTNERS, L.P.
200 CLARENDON STREET, 29TH FLOOR
BOSTON, MA 02116

Related Filers

CHRISTOPHER S GAFFNEY — 16 joint filings, latest 2019-10-01

JOHN G HAYES — 16 joint filings, latest 2019-10-01

Mark D. Taber — 16 joint filings, latest 2019-10-01

Matthew T Vettel — 16 joint filings, latest 2019-10-01

GREAT HILL INVESTORS LLC — 15 joint filings, latest 2019-10-01

GREAT HILL EQUITY PARTNERS IV LP — 7 joint filings, latest 2017-05-24

Great Hill Partners GP IV, L.P. — 7 joint filings, latest 2017-05-24

GHP V, LLC — 6 joint filings, latest 2019-10-01

Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.

Symbol	Role	Shares	Price	Disclosed Exposure	Lifetime OM Net	Filings	Latest Filed
W	Director	267,753	$102.44	$27.43M	-$291.05M	22	2026-03-06
REAL	Director	3,992,945	$9.48	$37.85M	$0	5	2020-12-23
YogaWorks, Inc. (YOGA) Delisted	Director	11,697,293	—	—	$0	4	2019-06-24
Vitacost.com, Inc. (VITC) Delisted	Director	0	—	—	$0	3	2014-08-19
SPARK NETWORKS INC (LOV) Delisted	Director	—	$0.21	—	$0	1	2010-11-09

Recent Filings

35 filings

Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.

Filed	Symbol	Action	Net Shares	Net $	Link
2026-03-06	W	Grant (A)	+3,176	$0	EDGAR
2025-09-04	W	Buy (P)	+160	$12.0K	EDGAR
2025-03-07	W	Grant (A)	+7,299	$0	EDGAR
2024-03-08	W	Grant (A)	+4,177	$0	EDGAR
2023-03-03	W	Grant (A)	+6,356	$0	EDGAR
2022-02-11	W	Grant (A)	+1,644	$0	EDGAR
2021-03-05	W	Buy (P)	+48,000	$13.61M	EDGAR
2021-02-12	W	Grant (A)	+871	$0	EDGAR
2021-01-21	W	Other (J)	+43,602	$0	EDGAR
2020-12-23	REAL	Gift (G)	−117,847	$0	EDGAR

Showing 1–10 of 35

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Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.