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Polaris Venture Partners Special Founders' Fund V, L.P.

CIK 1439586 · last filed 2016-06-29

Polaris Venture Partners Special Founders' Fund V, L.P. is a corporate insider who has filed 5 SEC Form 4 insider transactions across 3 companies since 2014. The most recent filing, for SELB, was dated Jun 29, 2016. Across all open-market trades the lifetime net is +$2.8M, making them a net buyer over the disclosed history. The firm reports its address in Boston, MA. 57 SEC filings were submitted jointly with Polaris Venture Management Co. V, L.L.C.

"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.

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Disclosed Exposure

$0

Companies

3

Total Filings

5

Lifetime Open-Market Net

$2.79M

Filer Profile

Reported Address
ONE MARINA PARK DRIVE
10TH FLOOR
BOSTON, MA 02210
Phone
(781) 290-0770
State of Incorporation
DE
Related Filers
Polaris Venture Management Co. V, L.L.C. — 57 joint filings, latest 2022-03-30
Polaris Venture Partners Entrepreneurs' Fund V, L.P. — 57 joint filings, latest 2022-03-30
Polaris Venture Partners Founders' Fund V, L.P. — 57 joint filings, latest 2022-03-30
Polaris Venture Partners V, L.P. — 57 joint filings, latest 2022-03-30
Jonathan A Flint — 19 joint filings, latest 2022-03-30
TERRANCE MCGUIRE — 16 joint filings, latest 2020-05-06
POLARIS VENTURE PARTNERS ENTREPRENEURS FUND IV LP — 4 joint filings, latest 2018-04-05
POLARIS VENTURE PARTNERS IV LP — 4 joint filings, latest 2018-04-05
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
Cartesian Therapeutics, Inc. (SELB) Delisted 10%+ Owner 18,364 $0.88 $16.2K $10.50M 1 2016-06-29
T2 Biosystems, Inc. (TTOO) Delisted 10%+ Owner 12 $0.00 $0 -$7.08M 3 2015-07-22
GENOCEA BIOSCIENCES, INC. (GNCA) Delisted 10%+ Owner 257,748 $0.00 $155 -$628.2K 1 2014-08-15

Recent Filings

5 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
2016-06-29 Cartesian Therapeutics, Inc. (SELB) Delisted Mixed +9,313,475 $10.50M EDGAR
2015-07-22 T2 Biosystems, Inc. (TTOO) Delisted Sell (S) −224,985 -$3.50M EDGAR
2015-07-07 T2 Biosystems, Inc. (TTOO) Delisted Sell (S) −224,985 -$3.58M EDGAR
2014-08-15 GENOCEA BIOSCIENCES, INC. (GNCA) Delisted Sell (S) −48,300 -$628.2K EDGAR
2014-08-14 T2 Biosystems, Inc. (TTOO) Delisted Conv (C) +11,872,855 $0 EDGAR
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.