Vault-13

TRANSMEDICS GROUP INC TMDX

COM · Common Stock · CUSIP 89377M109 · ISIN US89377M1099

179 institutional holders
28,560,75728.6m shares reported held*
89.5% of all shares outstanding*
$1.2bnreported value*

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($2.8m this quarter). Holder counts are more reliable. Shares outstanding: 31.9m as of 2022-10-31, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $41.76. Options: 10 managers hold calls ($24.1m notional), 9 hold puts ($14.4m).

Biggest calls

SUSQUEHANNA INTERNATIONAL GROUP, LLP — $11.3m270.0k shares
SIMPLEX TRADING, LLC — $4.1m97.7k shares
GROUP ONE TRADING LLC — $2.1m51.3k shares
JANE STREET GROUP, LLC — $2.0m47.9k shares
CITADEL ADVISORS LLC — $1.5m36.9k shares
WELLS FARGO & COMPANY/MN — $1.2m27.9k shares
Caption Management, LLC — $1.2m27.9k shares
Walleye Trading LLC — $697.0k16.7k shares
Walleye Capital LLC — $83.0k2.0k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. — $00 shares

Biggest puts

SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC — $11.3m270.0k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP — $1.1m27.2k shares
CITADEL ADVISORS LLC — $856.0k20.5k shares
SIMPLEX TRADING, LLC — $630.0k15.1k shares
JANE STREET GROUP, LLC — $200.0k4.8k shares
Caption Management, LLC — $187.0k4.5k shares
Walleye Capital LLC — $113.0k2.7k shares
Walleye Trading LLC — $4.0k100 shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. — $00 shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
FMR LLC 13G · institution +2.1 pts · filed 2025-05-12 15.0% +2.1 pts 5.1m≈ $336.0m 2025-05-12
BlackRock, Inc. 13G · institution filed 2025-07-18 14.6% 5.0m≈ $329.1m 2025-07-18
VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 5.7% new 1.9m≈ $129.5m 2026-04-29
VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-30 5.1% new 1.7m≈ $115.4m 2026-04-30

Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC)

Insider purchases and sales in Q3 2022

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
505Q4 20: 0 buyingQ4 20: 0 sellingQ1 21: 0 buyingQ1 21: 0 sellingQ1 21Q2 21: 0 buyingQ2 21: 0 sellingQ3 21: 0 buyingQ3 21: 0 sellingQ3 21Q4 21: 1 buyingQ4 21: 1 sellingQ1 22: 0 buyingQ1 22: 1 sellingQ1 22Q2 22: 0 buyingQ2 22: 2 sellingQ3 22: 0 buyingQ3 22: 5 sellingQ3 22
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20200—0——
Q1 20210—0——
Q2 20210—0——
Q3 20210—0——
Q4 20211$2.3m1$101.6k—
Q1 20220—1$112.5k—
Q2 20220—2$1.9m—
Q3 20220—5$12.4m—
DateInsiderTradeSharesPrice ValueTheir holding
2022-09-08 Hassanein Waleed H President & CEO, director Sold 17,723 $55.37 $981.3k17.7k shares -4%
2022-09-07 Hassanein Waleed H President & CEO, director Sold 2,277 $55.00 $125.2k2.3k shares -0%
2022-09-01 Gordon Stephen Chief Financial Officer Sold 10,000 $50.93 $509.3k10.0k shares -64%
2022-09-01 Carey John F VP of Operations Sold 3,000 $51.09 $153.3k3.0k shares -80%
2022-08-24 Hassanein Waleed H President & CEO, director Sold 3,591 $50.13 $180.0k3.6k shares -1%
2022-08-24 Khayal Tamer I Chief Commercial Officer Sold 2,514 $50.18 $126.2k2.5k shares -9%
2022-08-24 Khayal Tamer I Chief Commercial Officer Sold 1,976 $50.22 $99.2k2.0k shares -60%
2022-08-23 Hassanein Waleed H President & CEO, director Sold 16,409 $50.04 $821.1k16.4k shares -3%
2022-08-23 Khayal Tamer I Chief Commercial Officer Sold 8,024 $50.04 $401.5k8.0k shares -86%
2022-08-23 Khayal Tamer I Chief Commercial Officer Sold 7,486 $50.04 $374.6k7.5k shares -22%
2022-08-12 Hassanein Waleed H President & CEO, director Sold 7,000 $48.00 $336.0k7.0k shares -1%
2022-08-11 Hassanein Waleed H President & CEO, director Sold 12,929 $46.74 $604.3k12.9k shares -3%
2022-08-08 Gordon Stephen Chief Financial Officer Sold 10,000 $48.09 $480.9k10.0k shares -64%
2022-08-05 Hassanein Waleed H President & CEO, director Sold 20,000 $45.13 $902.6k20.0k shares -4%
2022-08-05 Khayal Tamer I Chief Commercial Officer Sold 10,000 $45.16 $451.6k10.0k shares -88%
2022-08-05 Khayal Tamer I Chief Commercial Officer Sold 10,000 $45.08 $450.8k10.0k shares -22%
2022-08-01 Carey John F VP of Operations Sold 3,000 $41.27 $123.8k3.0k shares -80%
2022-07-29 TOBIN JAMES R Director · By the James R. Tobin 2012 Trust Sold 48,515 $39.98 $1.9m48.5k shares -16%
2022-07-29 Khayal Tamer I Chief Commercial Officer Sold 13,504 $40.01 $540.3k13.5k shares -23%
2022-07-29 Carey John F VP of Operations Sold 4,000 $40.01 $160.0k4.0k shares -84%
2022-07-20 Carey John F VP of Operations Sold 1,500 $34.57 $51.9k1.5k shares -80%
2022-07-11 Carey John F VP of Operations Sold 1,500 $32.98 $49.5k1.5k shares -80%
2022-07-05 TOBIN JAMES R Director · By the James R. Tobin 2012 Trust Sold 48,515 $35.00 $1.7m48.5k shares -14%
2022-07-05 Khayal Tamer I Chief Commercial Officer Sold 13,504 $35.06 $473.5k13.5k shares -23%
2022-07-05 Gordon Stephen Chief Financial Officer Sold 10,000 $35.00 $350.0k10.0k shares -64%

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q3 2022

#ManagerLocationShares Value% of their portfolioChangeShares change
1 FMR LLC 0.02% of their portfolio BOSTON, MA 3,940,1563.9m $164.5m $164.5m 0.02% —
2 BlackRock Inc. 0.00% of their portfolio New York, NY 2,198,6542.2m $91.8m $91.8m 0.00% —
3 MACQUARIE GROUP LTD 0.09% of their portfolio Sydney, NSW 2000, C3 1,750,1991.8m $73.1m $73.1m 0.09% —
4 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 1,644,6911.6m $68.7m $68.7m 0.00% —
5 Sandhill Capital Partners LLC 6.40% of their portfolio BUFFALO, NY 1,343,1631.3m $56.1m $56.1m 6.40% —
6 CREDIT SUISSE AG/ 0.05% of their portfolio ZURICH, V8 1,165,3251.2m $48.6m $48.6m 0.05% —
7 Driehaus Capital Management LLC 0.63% of their portfolio Chicago, IL 996,569996.6k $41.6m $41.6m 0.63% —
8 SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC 2.86% of their portfolio Boston, MA 827,027827.0k $34.5m $34.5m 2.86% —
9 NEXT CENTURY GROWTH INVESTORS LLC 4.09% of their portfolio PLYMOUTH, MN 804,180804.2k $33.6m $33.6m 4.09% —
10 LORD, ABBETT & CO. LLC 0.12% of their portfolio JERSEY CITY, NJ 772,073772.1k $32.2m $32.2m 0.12% —
11 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 694,142694.1k $29.0m $29.0m 0.00% —
12 AXA S.A. 0.06% of their portfolio PARIS, I0 670,408670.4k $28.0m $28.0m 0.06% —
13 Bellevue Group AG 0.39% of their portfolio ZURICH, V8 653,814653.8k $27.3m $27.3m 0.39% —
14 Bank of New York Mellon Corp 0.01% of their portfolio NEW YORK, NY 638,684638.7k $26.7m $26.7m 0.01% —
15 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 544,638544.6k $22.7m $22.7m 0.00% —
16 EMERALD ADVISERS, LLC 1.07% of their portfolio LEOLA, PA 494,926494.9k $20.7m $20.7m 1.07% —
17 FRED ALGER MANAGEMENT, LLC 0.09% of their portfolio NEW YORK, NY 435,848435.8k $18.2m $18.2m 0.09% —
18 KORNITZER CAPITAL MANAGEMENT INC /KS 0.35% of their portfolio SHAWNEE MISSION, KS 392,926392.9k $16.4m $16.4m 0.35% —
19 EMERALD MUTUAL FUND ADVISERS TRUST 1.01% of their portfolio LEOLA, PA 384,447384.4k $16.0m $16.0m 1.01% —
20 Ophir Asset Management Pty Ltd 2.89% of their portfolio SYDNEY, C3 379,592379.6k $15.8m $15.8m 2.89% —
21 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 368,576368.6k $15.4m $15.4m 0.00% —
22 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 340,257340.3k $14.2m $14.2m 0.00% —
23 Allspring Global Investments Holdings, LLC 0.02% of their portfolio CHARLOTTE, NC 329,604329.6k $13.8m $13.8m 0.02% —
24 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 306,570306.6k $12.8m $12.8m 0.00% —
25 Avidity Partners Management LP 0.27% of their portfolio DALLAS, TX 300,000300.0k $12.5m $12.5m 0.27% —
26 Nicholas Investment Partners, LP 1.07% of their portfolio RANCHO SANTA FE, CA 277,625277.6k $11.6m $11.6m 1.07% —
27 DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio AUSTIN, TX 254,183254.2k $10.6m $10.6m 0.00% —
28 Kent Lake Capital LLC 6.84% of their portfolio RENO, NV 250,000250.0k $10.4m $10.4m 6.84% —
29 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 226,013226.0k $9.4m $9.4m 0.00% —
30 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 213,865213.9k $8.9m $8.9m 0.00% —
31 ArrowMark Colorado Holdings LLC 0.10% of their portfolio Denver, CO 200,386200.4k $8.4m $8.4m 0.10% —
32 Soleus Capital Management, L.P. 0.99% of their portfolio GREENWICH, CT 175,300175.3k $7.3m $7.3m 0.99% —
33 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 172,908172.9k $7.2m $7.2m 0.00% —
34 FIL Ltd 0.01% of their portfolio HAMILTON, D0 154,608154.6k $6.5m $6.5m 0.01% —
35 First Light Asset Management, LLC 0.65% of their portfolio Edina, MN 153,769153.8k $6.4m $6.4m 0.65% —
36 ROYCE & ASSOCIATES LP 0.07% of their portfolio New York, NY 152,000152.0k $6.3m $6.3m 0.07% —
37 VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.03% of their portfolio JUPITER, FL 146,737146.7k $6.1m $6.1m 0.03% —
38 CITADEL ADVISORS LLC 0.01% of their portfolio MIAMI, FL 142,187142.2k $5.9m $5.9m 0.01% —
39 PEREGRINE CAPITAL MANAGEMENT LLC 0.19% of their portfolio MINNEAPOLIS, MN 138,962139.0k $5.8m $5.8m 0.19% —
40 SILVERCREST ASSET MANAGEMENT GROUP LLC 0.05% of their portfolio NEW YORK, NY 135,293135.3k $5.6m $5.6m 0.05% —
41 PURA VIDA INVESTMENTS, LLC 0.76% of their portfolio NEW YORK, NY 120,000120.0k $5.0m $5.0m 0.76% —
42 Divisadero Street Capital Management, LP 5.56% of their portfolio MIAMI, FL 120,000120.0k $5.0m $5.0m 5.56% —
43 CASTLEARK MANAGEMENT LLC 0.27% of their portfolio CHICAGO, IL 118,245118.2k $4.9m $4.9m 0.27% —
44 Board of Trustees of The Leland Stanford Junior University 0.32% of their portfolio STANFORD, CA 117,281117.3k $5.0m $5.0m 0.32% —
45 Nuveen Asset Management, LLC 0.00% of their portfolio CHICAGO, IL 113,879113.9k $4.8m $4.8m 0.00% —
46 SEI INVESTMENTS CO 0.01% of their portfolio OAKS, PA 111,253111.3k $4.6m $4.6m 0.01% —
47 Russell Investments Group, Ltd. 0.01% of their portfolio Seattle, WA 109,271109.3k $4.6m $4.6m 0.01% —
48 Lisanti Capital Growth, LLC 0.58% of their portfolio NEW YORK, NY 103,185103.2k $4.3m $4.3m 0.58% —
49 RENAISSANCE TECHNOLOGIES LLC 0.01% of their portfolio NEW YORK, NY 102,999103.0k $4.3m $4.3m 0.01% —
50 JANE STREET GROUP, LLC 0.01% of their portfolio NEW YORK, NY 101,679101.7k $4.2m $4.2m 0.01% —
51 TUDOR INVESTMENT CORP ET AL 0.08% of their portfolio STAMFORD, CT 83,00683.0k $3.5m $3.5m 0.08% —
52 TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio NEW YORK, NY 82,68682.7k $3.5m $3.5m 0.01% —
53 Bullseye Asset Management LLC 1.98% of their portfolio DENVER, CO 81,66981.7k $3.4m $3.4m 1.98% —
54 D. E. Shaw & Co., Inc. 0.01% of their portfolio New York, NY 77,52677.5k $3.2m $3.2m 0.01% —
55 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 77,49577.5k $3.2m $3.2m 0.00% —
56 Informed Momentum Co LLC 0.70% of their portfolio SOLANA BEACH, CA 77,31177.3k $3.2m $3.2m 0.70% —
57 ESSEX INVESTMENT MANAGEMENT CO LLC 0.49% of their portfolio BOSTON, MA 72,84072.8k $3.0m $3.0m 0.49% —
58 Cubist Systematic Strategies, LLC 0.02% of their portfolio STAMFORD, CT 71,76071.8k $3.0m $3.0m 0.02% —
59 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 71,65271.7k $3.0m $3.0m 0.00% —
60 Swiss National Bank 0.00% of their portfolio ZURICH, V8 70,60070.6k $2.9m $2.9m 0.00% —
61 Calamos Advisors LLC 0.01% of their portfolio NAPERVILLE, IL 65,73065.7k $2.7m $2.7m 0.01% —
62 Global IMC LLC 0.73% of their portfolio SOLANA BEACH, CA 65,68965.7k $2.7m $2.7m 0.73% —
63 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 63,17463.2k $2.6m $2.6m 0.00% —
64 Walleye Capital LLC 0.05% of their portfolio NEW YORK, NY 53,94853.9k $2.3m $2.3m 0.05% —
65 Bridgewater Associates, LP 0.01% of their portfolio Westport, CT 46,88946.9k $2.0m $2.0m 0.01% —
66 Parkman Healthcare Partners LLC 0.50% of their portfolio STAMFORD, CT 42,35842.4k $1.8m $1.8m 0.50% —
67 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 41,45241.5k $1.7m $1.7m 0.00% —
68 Qube Research & Technologies Ltd 0.01% of their portfolio LONDON, X0 41,10241.1k $1.7m $1.7m 0.01% —
69 Ensign Peak Advisors, Inc 0.00% of their portfolio SALT LAKE CITY, UT 40,20040.2k $1.7m $1.7m 0.00% —
70 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 37,67037.7k $1.6m $1.6m 0.00% —
71 NATIXIS 0.01% of their portfolio PARIS, I0 36,99637.0k $1.6m $1.6m 0.01% —
72 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 36,18336.2k $1.5m $1.5m 0.00% —
73 ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio Berwyn, PA 36,15936.2k $1.5m $1.5m 0.00% —
74 BAILLIE GIFFORD & CO 0.00% of their portfolio EDINBURGH, X0 35,27135.3k $1.5m $1.5m 0.00% —
75 Quantbot Technologies LP 0.11% of their portfolio NEW YORK, NY 34,99135.0k $1.5m $1.5m 0.11% —
76 Mariner, LLC 0.01% of their portfolio Overland Park, KS 34,48134.5k $1.4m $1.4m 0.01% —
77 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 33,58133.6k $1.4m $1.4m 0.00% —
78 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 31,32631.3k $1.3m $1.3m 0.00% —
79 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio NEW YORK, NY 30,83730.8k $1.3m $1.3m 0.00% —
80 Jump Financial, LLC 0.05% of their portfolio Chicago, IL 29,20029.2k $1.2m $1.2m 0.05% —
81 Schonfeld Strategic Advisors LLC 0.01% of their portfolio NEW YORK, NY 28,70028.7k $1.2m $1.2m 0.01% —
82 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 28,21428.2k $1.2m $1.2m 0.00% —
83 OCCUDO QUANTITATIVE STRATEGIES LP 0.09% of their portfolio FORT LAUDERDALE, FL 26,35226.4k $1.1m $1.1m 0.09% —
84 MGO ONE SEVEN LLC 0.04% of their portfolio Beachwood, OH 23,61423.6k $985.0k $985.0k 0.04% —
85 ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio NASHVILLE, TN 21,00021.0k $877.0k $877.0k 0.00% —
86 AtonRa Partners 0.84% of their portfolio GENEVA, V8 20,53620.5k $857.0k $857.0k 0.84% —
87 Millrace Asset Group, Inc. 1.07% of their portfolio BERWYN, PA 20,31820.3k $848.0k $848.0k 1.07% —
88 ClariVest Asset Management LLC 0.04% of their portfolio SAN DIEGO, CA 19,30019.3k $805.0k $805.0k 0.04% —
89 Quadrature Capital Ltd 0.03% of their portfolio LONDON, X0 19,25119.3k $803.0k $803.0k 0.03% —
90 Squarepoint Ops LLC 0.01% of their portfolio NEW YORK, NY 18,46318.5k $771.0k $771.0k 0.01% —
91 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 17,15717.2k $717.0k $717.0k 0.00% —
92 MetLife Investment Management, LLC 0.01% of their portfolio Whippany, NJ 16,19016.2k $675.8k $675.8k 0.01% —
93 NISA INVESTMENT ADVISORS, LLC 0.01% of their portfolio ST. LOUIS, MO 15,57215.6k $657.0k $657.0k 0.01% —
94 NewEdge Advisors, LLC 0.01% of their portfolio NEW ORLEANS, LA 14,69214.7k $613.0k $613.0k 0.01% —
95 AMERICAN INTERNATIONAL GROUP, INC. 0.00% of their portfolio New York, NY 14,48514.5k $605.0k $605.0k 0.00% —
96 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 14,22414.2k $594.0k $594.0k 0.00% —
97 Legal & General Group Plc 0.00% of their portfolio London, X0 12,96613.0k $542.0k $542.0k 0.00% —
98 Financial Advocates Investment Management 0.07% of their portfolio OLYMPIA, WA 12,88212.9k $822.0k $822.0k 0.07% —
99 OPPENHEIMER & CO INC 0.01% of their portfolio NEW YORK, NY 12,52112.5k $523.0k $523.0k 0.01% —
100 ACT CAPITAL MANAGEMENT, LLC 0.72% of their portfolio WAYNE, PA 12,50012.5k $522.0k $522.0k 0.72% —