Tectonic Therapeutic (TECX)

Tectonic Therapeutic on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as biological products, (no diagnostic substances).

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2.2M

Short interest

settlement 2026-10-15

10.6

Days to cover

+2.5 days vs prior

60.4%

Short share of volume

2026-11-02

Fails to deliver

settlement 2026-09-25

Thu 5 Nov

Next earnings

estimated date

-$15K

Insider flow, 90 days

0 buys, 3 sells

As of 2026-11-02.

Short interest

FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSON

As of 15 October 2026, short interest in TECX is 2,224,634 shares, up 6,085 shares over the last month. Over the last 48 readings it ranged from 355,088 shares (31 October 2024) to 5,353,242 shares (15 December 2025). At the reported average volume of 210K shares a day that is 10.6 days to cover.

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Settlement	Shares short	Change	Avg daily volume	Days to cover
2026-10-15	2,224,634	+0.1%	210,279	10.58
2026-09-30	2,222,184	+0.2%	275,508	8.07
2026-09-15	2,218,549	+14.2%	170,592	13.01
2026-08-31	1,942,426	+12.5%	255,869	7.59
2026-08-14	1,726,909	-2.1%	204,884	8.43
2026-07-31	1,764,899	-8.9%	164,029	10.76
2026-07-15	1,936,691	-9.4%	255,529	7.58
2026-06-30	2,136,671	-0.7%	149,301	14.31
2026-06-15	2,152,242	-8.1%	129,301	16.65
2026-05-29	2,341,074	-10.4%	221,016	10.59
2026-05-15	2,612,024	+6.5%	255,380	10.23
2026-04-30	2,453,414	+1.2%	225,363	10.89
2026-04-15	2,425,053	+0.5%	178,999	13.55
2026-03-31	2,413,729	-13.6%	190,934	12.64
2026-03-13	2,793,962	-9.6%	466,669	5.99
2026-02-27	3,091,130	-15.4%	286,012	10.81
2026-02-13	3,655,738	-3.0%	828,953	4.41
2026-01-30	3,768,786	-5.3%	230,359	16.36
2026-01-15	3,977,991	+6.3%	220,132	18.07
2025-12-31	3,740,335	-30.1%	384,628	9.72
2025-12-15	5,353,242	+5.2%	253,108	21.15
2025-11-28	5,089,794	+1.7%	349,976	14.54
2025-11-14	5,004,978	+3.8%	523,522	9.56
2025-10-31	4,824,160	+35.8%	758,865	6.36
2025-10-15	3,553,680	+24.7%	480,879	7.39
2025-09-30	2,849,373	+17.8%	567,708	5.02
2025-09-15	2,417,947	-6.5%	811,820	2.98
2025-08-29	2,586,743	+3.0%	123,835	20.89
2025-08-15	2,512,520	+15.6%	252,044	9.97
2025-07-31	2,172,912	+13.0%	192,004	11.32
2025-07-15	1,923,054	+9.8%	195,178	9.85
2025-06-30	1,750,609	+30.5%	333,260	5.25
2025-06-13	1,341,751	+5.9%	158,410	8.47
2025-05-30	1,267,502	-1.1%	163,964	7.73
2025-05-15	1,281,412	+6.6%	175,462	7.30
2025-04-30	1,201,600	-20.3%	201,825	5.95
2025-04-15	1,507,085	+36.4%	241,199	6.25
2025-03-31	1,104,934	+25.2%	281,548	3.92
2025-03-14	882,379	-6.6%	187,050	4.72
2025-02-28	944,664	+6.3%	263,554	3.58
2025-02-14	888,500	-16.3%	396,931	2.24
2025-01-31	1,061,683	+60.6%	790,617	1.34
2025-01-15	661,086	+15.8%	111,211	5.94
2024-12-31	570,751	+11.5%	107,261	5.32
2024-12-13	511,875	+7.3%	79,227	6.46
2024-11-29	476,837	+8.6%	102,577	4.65
2024-11-15	439,266	+23.7%	151,950	2.89
2024-10-31	355,088	+7.0%	106,491	3.33

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 2 November 2026, the short share of TECX volume is 60.4%, up 5.7 points over the last five sessions. Over the last 30 readings it ranged from 23.7% (29 September 2026) to 74.7% (23 October 2026). The latest reading is 10.9 points above the 30-session average of 49.5%, on 67K shares reported.

Date	Short volume	Total volume	Short share	Exempt
2026-11-02	40K	67K	60.4%	313
2026-10-30	34K	64K	53.1%	0
2026-10-29	37K	66K	55.9%	44
2026-10-28	54K	107K	50.4%	0
2026-10-27	29K	75K	39.1%	0
2026-10-26	29K	53K	54.8%	0
2026-10-23	28K	38K	74.7%	0
2026-10-22	70K	108K	65.5%	0
2026-10-21	39K	64K	61.2%	0
2026-10-20	25K	52K	47.8%	0
2026-10-19	27K	78K	33.9%	0
2026-10-16	39K	83K	47.4%	0
2026-10-15	57K	83K	69.2%	0
2026-10-14	32K	80K	39.4%	0
2026-10-13	38K	55K	69.8%	0
2026-10-12	18K	38K	47.1%	0
2026-10-09	18K	33K	54.8%	0
2026-10-08	26K	66K	38.9%	38
2026-10-07	43K	160K	27.0%	0
2026-10-06	47K	87K	53.6%	0
2026-10-05	43K	111K	39.0%	0
2026-10-02	42K	112K	37.4%	42
2026-10-01	67K	168K	40.0%	0
2026-09-30	55K	114K	47.9%	0
2026-09-29	120K	506K	23.7%	0
2026-09-28	60K	94K	63.4%	0
2026-09-25	19K	44K	42.5%	0
2026-09-24	51K	91K	56.6%	0
2026-09-23	36K	85K	42.5%	0
2026-09-22	36K	74K	48.5%	0

Fails to deliver

SEC, the last 30 settlement dates with a fail. JSON

As of 25 September 2026, the fails-to-deliver balance in TECX is 1 share, down 305 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (6 July 2026) to 155,002 shares (10 August 2026). The latest reading sits at the bottom of that range.

Settlement	Shares failed	Price	Value
2026-09-25	1	$24.12	$24
2026-09-10	306	$30.48	$9K
2026-08-24	19,728	$37.63	$742K
2026-08-12	6	$31.87	$191
2026-08-10	155,002	$30.98	$4.8M
2026-08-06	39	$29.56	$1K
2026-08-04	50	$27.92	$1K
2026-08-03	358	$28.03	$10K
2026-07-29	142	$29.80	$4K
2026-07-17	6	$30.65	$184
2026-07-15	6,633	$34.81	$231K
2026-07-07	8	$35.22	$282
2026-07-06	1	$37.93	$38
2026-07-02	21	$32.74	$688
2026-07-01	20	$34.38	$688
2026-06-30	5,954	$33.09	$197K
2026-06-17	428	$30.01	$13K
2026-06-15	250	$30.28	$8K
2026-06-11	64	$28.05	$2K
2026-06-10	25	$28.56	$714
2026-05-26	25	$29.12	$728
2026-05-22	25	$28.52	$713
2026-05-13	8	$27.96	$224
2026-05-12	8	$27.52	$220
2026-04-29	5,094	$27.20	$139K
2026-04-17	8,867	$29.68	$263K
2026-04-16	2,554	$29.69	$76K
2026-04-09	1,798	$30.06	$54K
2026-04-07	183	$29.98	$5K
2026-04-02	4,249	$30.78	$131K

Insider trades

SEC Form 4, newest first. JSON

Insiders at TECX reported 3 open-market sells worth $15K in the last 90 days and no open-market buys. Latest filing: REICIN ALISE (Chief Executive Officer) on 2026-10-26.

Date	Insider	Title	Type	Shares	Price	Value	Owned after
2026-10-26	REICIN ALISE	Chief Executive Officer	Exercise or conversion	10K	$2.38	$24K	319K
2026-09-30	McNamara Peter	Chief Scientific Officer	Sell	536	$23.04	$12K	54K
2026-09-25	McNamara Peter	Chief Scientific Officer	Tax withholding	444	$23.67	$11K	55K
2026-09-25	Lochner Daniel	Chief Financial Officer	Tax withholding	520	$23.67	$12K	58K
2026-09-25	Schwabish Marc	Chief Business Officer	Tax withholding	411	$23.67	$10K	45K
2026-09-25	REICIN ALISE	Chief Executive Officer	Tax withholding	2K	$23.67	$37K	309K
2026-09-25	Ruddy Marcella K.	Chief Medical Officer	Tax withholding	525	$23.67	$12K	67K
2026-08-25	McNamara Peter	Chief Scientific Officer	Sell	43	$36.52	$2K	55K
2026-08-25	McNamara Peter	Chief Scientific Officer	Exercise or conversion	43	$14.71	$633	55K
2026-08-12	McNamara Peter	Chief Scientific Officer	Sell	43	$35.00	$2K	55K
2026-08-12	McNamara Peter	Chief Scientific Officer	Exercise or conversion	43	$14.71	$633	55K
2026-06-30	McNamara Peter	Chief Scientific Officer	Sell	172	$35.00	$6K	55K
2026-06-30	McNamara Peter	Chief Scientific Officer	Exercise or conversion	172	$14.71	$3K	55K
2026-06-20	REICIN ALISE	Chief Executive Officer	Tax withholding	924	$30.34	$28K	311K
2026-05-04	Ruddy Marcella K.	Chief Medical Officer	Sell	1K	$30.00	$32K	68K
2026-04-01	Ruddy Marcella K.	Chief Medical Officer	Sell	1K	$31.05	$31K	69K
2026-03-06	Ruddy Marcella K.	Chief Medical Officer	Sell	10K	$30.00	$300K	70K
2026-03-06	McNamara Peter	Chief Scientific Officer	Sell	215	$35.00	$8K	55K
2026-03-06	McNamara Peter	Chief Scientific Officer	Sell	6K	$30.00	$181K	56K
2026-03-06	McNamara Peter	Chief Scientific Officer	Exercise or conversion	215	$14.71	$3K	62K
2026-03-06	McNamara Peter	Chief Scientific Officer	Exercise or conversion	3K	$2.38	$6K	61K
2026-03-04	Schwabish Marc	Chief Business Officer	Grant	20K	$0.00	$0	45K
2026-03-04	Ruddy Marcella K.	Chief Medical Officer	Grant	27K	$0.00	$0	80K
2026-03-04	REICIN ALISE	Chief Executive Officer	Grant	77K	$0.00	$0	312K
2026-03-04	McNamara Peter	Chief Scientific Officer	Sell	2K	$25.00	$41K	59K
2026-03-04	McNamara Peter	Chief Scientific Officer	Grant	23K	$0.00	$0	60K
2026-03-04	Lochner Daniel	Chief Financial Officer	Grant	27K	$0.00	$0	59K
2026-03-03	McNamara Peter	Chief Scientific Officer	Sell	2K	$22.06	$36K	37K
2026-02-11	REICIN ALISE	Chief Executive Officer	Buy	3K	$21.10	$53K	127K
2026-02-11	REICIN ALISE	Chief Executive Officer	Buy	3K	$21.10	$53K	238K
2026-02-10	Lochner Daniel	Chief Financial Officer	Buy	6K	$21.61	$130K	32K
2026-02-10	Schwabish Marc	Chief Business Officer	Exercise or conversion	5K	$2.38	$11K	26K
2026-02-04	Schwabish Marc	Chief Business Officer	Tax withholding	2K	$23.22	$38K	21K
2026-02-04	Ruddy Marcella K.	Chief Medical Officer	Tax withholding	2K	$23.22	$48K	53K
2026-02-04	REICIN ALISE	Chief Executive Officer	Tax withholding	4K	$23.22	$95K	235K
2026-02-04	McNamara Peter	Chief Scientific Officer	Tax withholding	2K	$23.22	$41K	39K
2026-02-04	Lochner Daniel	Chief Financial Officer	Tax withholding	2K	$23.22	$48K	26K
2025-12-31	REICIN ALISE	Chief Executive Officer	Exercise or conversion	11K	$2.38	$26K	239K
2025-12-22	McNamara Peter	Chief Scientific Officer	Exercise or conversion	7K	$2.98	$21K	41K
2025-09-25	Schwabish Marc	Chief Business Officer	Grant	4K	$0.00	$0	23K
2025-09-25	Ruddy Marcella K.	Chief Medical Officer	Grant	5K	$0.00	$0	55K
2025-09-25	REICIN ALISE	Chief Executive Officer	Grant	15K	$0.00	$0	228K
2025-09-25	McNamara Peter	Chief Scientific Officer	Grant	5K	$0.00	$0	34K
2025-09-25	Lochner Daniel	Chief Financial Officer	Grant	5K	$0.00	$0	28K
2025-06-20	REICIN ALISE	Chief Executive Officer	Tax withholding	859	$19.81	$17K	213K
2025-04-11	SPRINGER TIMOTHY A	Director,TenPercentOwner	Buy	9K	$16.31	$155K	4.3M
2025-04-11	SPRINGER TIMOTHY A	Director,TenPercentOwner	Buy	54K	$16.31	$876K	1.5M
2025-04-10	SPRINGER TIMOTHY A	Director,TenPercentOwner	Buy	46K	$16.73	$767K	1.4M
2025-04-10	SPRINGER TIMOTHY A	Director,TenPercentOwner	Buy	8K	$16.73	$135K	4.3M
2025-04-09	SPRINGER TIMOTHY A	Director,TenPercentOwner	Buy	16K	$14.62	$237K	1.4M
2025-04-09	SPRINGER TIMOTHY A	Director,TenPercentOwner	Buy	5K	$15.23	$74K	1.4M
2025-04-09	SPRINGER TIMOTHY A	Director,TenPercentOwner	Buy	857	$15.23	$13K	4.3M
2025-04-09	SPRINGER TIMOTHY A	Director,TenPercentOwner	Buy	3K	$14.62	$42K	4.3M
2025-04-07	MCGUIRE TERRANCE	Director	Sell	500K	$17.10	$8.6M	573K
2025-04-07	SPRINGER TIMOTHY A	Director,TenPercentOwner	Buy	88K	$17.10	$1.5M	4.3M
2025-04-07	SPRINGER TIMOTHY A	Director,TenPercentOwner	Buy	413K	$17.10	$7.1M	1.4M
2025-02-05	Lochner Daniel	Chief Financial Officer	Buy	5K	$54.14	$250K	5K
2025-02-05	SPRINGER TIMOTHY A	Director,TenPercentOwner	Buy	660K	$50.00	$33.0M	970K
2025-02-05	SPRINGER TIMOTHY A	Director,TenPercentOwner	Buy	129K	$54.14	$7.0M	4.2M
2025-02-04	REICIN ALISE	Chief Executive Officer	Grant	36K	$0.00	$0	214K
2025-02-04	Ruddy Marcella K.	Chief Medical Officer	Grant	18K	$0.00	$0	50K
2025-02-04	Lochner Daniel	Chief Financial Officer	Grant	18K	$0.00	$0	18K
2025-02-04	McNamara Peter	Chief Scientific Officer	Grant	15K	$0.00	$0	29K
2025-02-04	Schwabish Marc	Chief Business Officer	Grant	14K	$0.00	$0	19K
2025-01-28	Schwabish Marc	Chief Business Officer	Exercise or conversion	3K	$2.38	$6K	5K
2024-12-09	Schwabish Marc	Chief Business Officer	Exercise or conversion	2K	$2.38	$5K	2K
2024-12-04	REICIN ALISE	Chief Executive Officer	Grant	12K	$0.00	$0	178K
2024-12-03	McNamara Peter	Chief Scientific Officer	Exercise or conversion	4K	$2.38	$8K	14K
2024-10-22	SPRINGER TIMOTHY A	Director,TenPercentOwner	Buy	300K	$33.59	$10.1M	4.1M
2024-09-26	SPRINGER TIMOTHY A	Director,TenPercentOwner	Buy	4K	$30.10	$123K	3.8M
2024-09-26	SPRINGER TIMOTHY A	Director,TenPercentOwner	Buy	25K	$28.16	$691K	3.8M
2024-09-26	SPRINGER TIMOTHY A	Director,TenPercentOwner	Buy	19K	$29.13	$553K	3.8M
2024-09-26	SPRINGER TIMOTHY A	Director,TenPercentOwner	Buy	2K	$30.87	$74K	3.8M
2024-09-24	SPRINGER TIMOTHY A	Director,TenPercentOwner	Other transaction	1.2M	$0.00	$0	310K
2024-09-24	SPRINGER TIMOTHY A	Director,TenPercentOwner	Other transaction	186K	$0.00	$0	186K
2024-09-24	SPRINGER TIMOTHY A	Director,TenPercentOwner	Other transaction	1.1M	$0.00	$0	3.7M
2024-06-20	REICIN ALISE	Chief Executive Officer	Grant	125K	price not stated in the filing	not stated	125K
2024-06-20	REICIN ALISE	Chief Executive Officer	Grant	167K	price not stated in the filing	not stated	167K
2024-06-20	Cortis Christian	Chief Operating Officer	Grant	126K	price not stated in the filing	not stated	126K
2024-06-20	McNamara Peter	Chief Scientific Officer	Grant	11K	price not stated in the filing	not stated	11K
2024-06-20	Ruddy Marcella K.	Chief Medical Officer	Grant	32K	price not stated in the filing	not stated	32K
2024-06-20	MCGUIRE TERRANCE	Director	Grant	20K	price not stated in the filing	not stated	20K
2024-06-20	MCGUIRE TERRANCE	Director	Grant	1.1M	price not stated in the filing	not stated	1.1M
2024-06-20	MCGUIRE TERRANCE	Director	Grant	65K	price not stated in the filing	not stated	65K
2024-06-20	SPRINGER TIMOTHY A	Director,TenPercentOwner	Grant	1.6M	price not stated in the filing	not stated	1.6M
2024-06-20	SPRINGER TIMOTHY A	Director,TenPercentOwner	Grant	2.7M	price not stated in the filing	not stated	2.7M
2024-06-20	Tipirneni Praveen P.	Director	Grant	3K	price not stated in the filing	not stated	3K
2024-06-20	Vitorovic Stefan	Director	Grant	1.0M	price not stated in the filing	not stated	1.0M
2024-06-20	Vitorovic Stefan	Director	Grant	28K	price not stated in the filing	not stated	28K
2024-06-20	Leonard Braden Michael	Other	Other transaction	400K	price not stated in the filing	not stated	400K
2024-06-20	Leonard Braden Michael	Other	Other transaction	33K	price not stated in the filing	not stated	33K

Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.

Planned sales (Form 144)

Newest first. JSON

9 Form 144 notices on file for TECX worth $1.3M at the prices reported; 4 in the last 90 days worth $676K. Latest: PETER MCNAMARA filed on 2026-09-30 to sell 493 shares ($12K) from 2026-09-30.

Filed	Seller	Shares	Market value	Of outstanding	Sale from	Broker
2026-09-30	PETER MCNAMARAOfficer	493	$12K	0.003%	2026-09-30	Morgan Stanley Smith Barney LLC Executive Financial Services
2026-08-27	TERRANCE MCGUIREFormer Director	8K	$277K	0.038%	2026-08-27	Morgan Stanley Smith Barney LLC Executive Financial Services
2026-08-21	TERRANCE MCGUIREFormer Director	10K	$384K	0.052%	2026-08-21	Morgan Stanley Smith Barney LLC Executive Financial Services
2026-08-12	PETER MCNAMARAOfficer	129	$4K	0.001%	2026-08-12	Morgan Stanley Smith Barney LLC Executive Financial Services
2026-06-30	PETER MCNAMARAOfficer	172	$6K	0.001%	2026-06-30	Morgan Stanley Smith Barney LLC Executive Financial Services
2026-03-06	MARCELLA RUDDYOfficer	12K	$336K	0.064%	2026-03-06	Morgan Stanley Smith Barney LLC Executive Financial Services
2026-03-06	PETER MCNAMARAOfficer	6K	$174K	0.033%	2026-03-06	Morgan Stanley Smith Barney LLC Executive Financial Services
2026-03-04	PETER MCNAMARAOfficer	2K	$40K	0.009%	2026-03-04	Morgan Stanley Smith Barney LLC Executive Financial Services
2026-03-03	PETER MCNAMARAOfficer	2K	$38K	0.009%	2026-03-03	Morgan Stanley Smith Barney LLC Executive Financial Services

Large holders (13D and 13G)

One row per reporting person with its latest filing, newest first. JSON

1 holder reports 5% or more of TECX in its latest filing, on Schedule 13G (passive). The holder is Chen Yu at 6.2% of the class (1,169,760 shares), filed 2026-02-27 for an event on 2026-02-12.

Filed	Form	Holder	Shares	Of class	Event
2026-10-29	13G/Ano. 1	Aberdeen Group plcparent holding company	485K	2.5%	2026-09-30
2026-10-29	13G/Ano. 1	abrdn Inccorporation, investment adviser	485K	2.5%	2026-09-30
2026-02-27	13G	Chen Yuindividual	1.2M	6.2%	2026-02-12
2026-02-27	13G	TCG Crossover Fund III, L.P.partnership	585K	3.1%	2026-02-12
2026-02-27	13G	TCG Crossover Fund II, L.P.partnership	585K	3.1%	2026-02-12
2026-02-27	13G	TCG Crossover GP II, LLCother entity	585K	3.1%	2026-02-12
2026-02-27	13G	TCG Crossover GP III, LLCother entity	585K	3.1%	2026-02-12
2025-11-14	13G/Ano. 1	Deep Track Capital, LPinvestment adviser, other entity	0	0.0%	2025-09-30
2025-11-14	13G/Ano. 1	Deep Track Biotechnology Master Fund, Ltd.corporation	0	0.0%	2025-09-30
2025-11-14	13G/Ano. 1	David Kroinparent holding company, individual	0	0.0%	2025-09-30
2025-11-14	13G/Ano. 2	EcoR1 Capital, LLCinvestment adviser, other entity	0	0.0%	2025-09-30
2025-11-14	13G/Ano. 2	Oleg Nodelmanparent holding company, individual	0	0.0%	2025-09-30
2025-11-14	13G/Ano. 2	EcoR1 Capital Fund Qualified, L.P.partnership	0	0.0%	2025-09-30

13F holders

Tracked managers holding TECX at their latest 13F. JSON

5 of the 30 tracked managers held TECX at their latest 13F, $16.1M in total at quarter-end prices. D. E. Shaw & Co. is the largest at $6.4M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 4 added shares and 1 cut.

Fund	Quarter	Shares	Value	Of portfolio	Change in shares
D. E. Shaw & Co.	2026-06-30	187K	$6.4M	0.00%	+70K
Millennium Management	2026-06-30	166K	$5.7M	0.00%	+107K
Citadel Advisors	2026-06-30	90K	$3.1M	0.00%	new
Fisher Asset Management	2026-06-30	19K	$657K	0.00%	new
AQR Capital Management	2026-06-30	7K	$227K	0.00%	-10K

Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.

What this page is

Tectonic Therapeutic in the regulatory record

Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.

Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.

This page follows Tectonic Therapeutic (TECX), SEC CIK 1681087, listed on Nasdaq, classified by the SEC as biological products, (no diagnostic substances). The cross-market tables live on the short interest and insider transactions hubs.

Source and updates

Short interest: FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-10-15.JSON and CSV
Daily short volume: FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-11-02.JSON and CSV
Fails to deliver: SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-09-25.JSON and CSV
Planned sales: SEC EDGAR Form 144Source: SEC.New notices appear shortly after the SEC posts them; a notice is filed on or before the sale. Latest 2026-09-30.JSON and CSV
Large holders: SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-10-29.JSON and CSV
13F holders: SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
Earnings dates: SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-08-06.JSON and CSV
Insider trades: SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-10-26.JSON and CSV
Company record: EDGAR filing index for CIK 1681087Ticker, name and exchange from the SEC's company list, refreshed weekly.
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How to read it

Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.

Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.

Other companies the SEC classifies as biological products, (no diagnostic substances)

Other company pages

Datasets

Frequently Asked Questions

How much of TECX is sold short?

2,224,634 shares were held short at the 2026-10-15 settlement, 10.6 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.

What is TECX's daily short volume?

On 2026-11-02, 40,354 of the 66,767 TECX shares reported to FINRA were sold short, 60.4% of the day's reported volume. Short volume is a flow for one day, not a position.

Does TECX have fails to deliver?

The SEC's latest file shows 1 TECX shares failed to deliver at settlement 2026-09-25. Fails are reported per settlement date and published twice a month with a lag.

Are TECX insiders buying or selling?

Insiders at TECX reported 3 open-market sells worth $15K in the last 90 days and no open-market buys. Latest filing: REICIN ALISE (Chief Executive Officer) on 2026-10-26.

Have TECX insiders filed to sell?

9 Form 144 notices on file for TECX worth $1.3M at the prices reported; 4 in the last 90 days worth $676K. Latest: PETER MCNAMARA filed on 2026-09-30 to sell 493 shares ($12K) from 2026-09-30.

Who owns 5% or more of TECX?

1 holder reports 5% or more of TECX in its latest filing, on Schedule 13G (passive). The holder is Chen Yu at 6.2% of the class (1,169,760 shares), filed 2026-02-27 for an event on 2026-02-12.

Which tracked 13F managers own TECX?

5 of the 30 tracked 13F managers held TECX shares at their latest filing, $16.1M in all. The largest: D. E. Shaw & Co. (187K shares, $6.4M), Izzy Englander's Millennium Management (166K shares, $5.7M), Ken Griffin's Citadel Advisors (90K shares, $3.1M), Ken Fisher's Fisher Asset Management (19K shares, $657K), Cliff Asness's AQR Capital Management (7K shares, $227K).

Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.