Tempest Therapeutics (TPST)

Tempest Therapeutics on one page: short interest, daily short volume, fails to deliver, large holders, 13F holders, earnings dates and insider trades. Listed on Nasdaq.

Download CSV

313K

Short interest

settlement 2026-10-15

1.0

Days to cover

unchanged vs prior

55.8%

Short share of volume

2026-11-02

8,345

Fails to deliver

settlement 2026-10-13

Wed 4 Nov

Next earnings

estimated date

Insider flow, 90 days

0 buys, 0 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 TPST is 312,948 shares, down 37,467 shares over the last month. Over the last 48 readings it ranged from 109,252 shares (30 April 2025) to 3,225,200 shares (13 December 2024). The latest reading sits at the bottom of that range. At the reported average volume of 361K shares a day that is 1.0 days to cover.

Embed this chart.The embed keeps its attribution line.

<iframe src="https://xoomar.com/embed/stocks/tpst" width="100%" height="440" style="border:0;max-width:100%" loading="lazy" title="XOOMAR chart"></iframe>

Preview Dark previewAdd ?theme=dark to the src for a dark chart.

Settlement	Shares short	Change	Avg daily volume	Days to cover
2026-10-15	312,948	-48.6%	361,462	1.00
2026-09-30	608,434	+73.6%	11,203,617	1.00
2026-09-15	350,415	-8.2%	2,878,453	1.00
2026-08-31	381,580	+2.1%	188,165	2.03
2026-08-14	373,782	+40.0%	372,398	1.00
2026-07-31	266,901	-16.0%	191,263	1.40
2026-07-15	317,660	+11.6%	158,828	2.00
2026-06-30	284,764	+38.4%	242,682	1.17
2026-06-15	205,707	-39.7%	100,848	2.04
2026-05-29	341,334	-14.9%	96,263	3.55
2026-05-15	401,128	+1.6%	142,278	2.82
2026-04-30	395,021	-38.3%	241,206	1.64
2026-04-15	640,470	+42.6%	341,083	1.88
2026-03-31	449,002	+240.1%	276,399	1.62
2026-03-13	132,035	-22.4%	70,720	1.87
2026-02-27	170,218	-11.7%	67,426	2.52
2026-02-13	192,674	+33.3%	197,075	1.00
2026-01-30	144,511	-4.4%	98,481	1.47
2026-01-15	151,122	-18.5%	74,089	2.04
2025-12-31	185,406	-25.8%	75,542	2.45
2025-12-15	249,870	-34.1%	129,910	1.92
2025-11-28	379,220	+146.8%	392,090	1.00
2025-11-14	153,644	-1.6%	37,529	4.09
2025-10-31	156,075	-2.6%	34,560	4.52
2025-10-15	160,226	-11.0%	49,456	3.24
2025-09-30	179,969	+3.7%	44,876	4.01
2025-09-15	173,516	-4.6%	53,502	3.24
2025-08-29	181,847	-1.9%	69,579	2.61
2025-08-15	185,364	-14.3%	93,218	1.99
2025-07-31	216,181	+16.1%	115,599	1.87
2025-07-15	186,244	-49.1%	62,620	2.97
2025-06-30	365,690	-16.8%	101,225	3.61
2025-06-13	439,554	+295.4%	393,367	1.12
2025-05-30	111,173	-13.1%	39,318	2.83
2025-05-15	127,899	+17.1%	39,649	3.23
2025-04-30	109,252	-0.7%	57,319	1.91
2025-04-15	110,022	-93.3%	111,264	1.00
2025-03-31	1,633,984	-6.8%	461,822	3.54
2025-03-14	1,752,444	-17.9%	510,226	3.43
2025-02-28	2,133,508	+1.1%	637,948	3.34
2025-02-14	2,109,508	-18.9%	1,033,033	2.04
2025-01-31	2,599,503	-16.9%	711,304	3.65
2025-01-15	3,128,154	+20.4%	1,924,340	1.63
2024-12-31	2,597,274	-19.5%	1,925,981	1.35
2024-12-13	3,225,200	+29.3%	1,458,887	2.21
2024-11-29	2,494,566	+18.9%	1,299,098	1.92
2024-11-15	2,097,120	-20.5%	2,508,594	1.00
2024-10-31	2,638,101	-29.1%	7,313,225	1.00

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 2 November 2026, the short share of TPST volume is 55.8%, up 15.6 points over the last five sessions. Over the last 30 readings it ranged from 29.8% (6 October 2026) to 64.7% (2 October 2026). The latest reading is 5.0 points above the 30-session average of 50.8%, on 65K shares reported.

Date	Short volume	Total volume	Short share	Exempt
2026-11-02	36K	65K	55.8%	0
2026-10-30	38K	68K	56.8%	0
2026-10-29	11K	23K	49.1%	300
2026-10-28	39K	69K	56.6%	0
2026-10-27	14K	24K	55.9%	0
2026-10-26	15K	37K	40.2%	0
2026-10-23	12K	22K	54.9%	0
2026-10-22	49K	113K	43.8%	103
2026-10-21	114K	206K	55.4%	16
2026-10-20	42K	71K	59.3%	0
2026-10-19	36K	60K	59.5%	0
2026-10-16	20K	43K	46.6%	0
2026-10-15	18K	51K	34.2%	0
2026-10-14	63K	100K	62.8%	105
2026-10-13	46K	123K	37.2%	3,720
2026-10-12	27K	77K	35.4%	0
2026-10-09	45K	85K	52.6%	0
2026-10-08	42K	84K	50.1%	0
2026-10-07	113K	213K	53.2%	0
2026-10-06	50K	169K	29.8%	0
2026-10-05	54K	118K	45.5%	0
2026-10-02	133K	205K	64.7%	8,486
2026-10-01	41K	82K	50.4%	0
2026-09-30	28K	65K	43.0%	0
2026-09-29	30K	57K	52.3%	0
2026-09-28	56K	115K	49.1%	0
2026-09-25	84K	156K	53.6%	0
2026-09-24	134K	251K	53.3%	14,911
2026-09-23	231K	376K	61.5%	5,124
2026-09-22	1.5M	2.4M	62.7%	229,414

Fails to deliver

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

As of 13 October 2026, the fails-to-deliver balance in TPST is 8,345 shares, up 8,331 shares over the last settlement date. Over the last 30 readings it ranged from 9 shares (30 September 2026) to 1,264,363 shares (17 September 2026). The latest reading sits at the bottom of that range.

Settlement	Shares failed	Price	Value
2026-10-13	8,345	$0.74	$6K
2026-10-08	14	$0.79	$11
2026-10-02	142	$0.81	$115
2026-09-30	9	$0.81	$7
2026-09-28	25,733	$0.83	$21K
2026-09-25	116,365	$0.85	$99K
2026-09-24	121,581	$0.92	$112K
2026-09-23	372,241	$1.00	$372K
2026-09-22	189,535	$0.77	$146K
2026-09-21	47,477	$0.97	$46K
2026-09-18	779,914	$0.90	$702K
2026-09-17	1,264,363	$1.21	$1.5M
2026-09-16	1,077,465	$0.76	$819K
2026-09-14	2,877	$0.81	$2K
2026-09-03	1,450	$1.10	$2K
2026-09-02	1,450	$1.05	$2K
2026-09-01	741	$1.09	$808
2026-08-19	52	$1.07	$56
2026-08-18	5,303	$1.13	$6K
2026-08-14	10,949	$1.17	$13K
2026-08-11	3,032	$1.04	$3K
2026-08-06	1,458	$0.91	$1K
2026-07-29	286	$0.87	$249
2026-07-24	65	$0.94	$61
2026-07-10	804	$0.97	$780
2026-07-09	1,977	$0.99	$2K
2026-07-06	27	$1.09	$29
2026-05-26	1,432	$1.86	$3K
2026-05-21	46	$1.86	$86
2026-05-19	193	$1.82	$351

Insider trades

SEC Form 4, newest first. JSON

No open-market insider trades were reported for TPST in the last 90 days. The most recent filings are listed below. Latest filing: Angel Matthew (CEO and President) on 2026-03-24.

Date	Insider	Title	Type	Shares	Price	Value	Owned after
2026-03-24	Angel Matthew	CEO and President	Buy	231K	$2.16	$500K	231K
2024-08-12	Versant Venture Capital VI, L.P.	TenPercentOwner	Sell	388K	$1.10	$427K	210K
2024-08-08	Versant Venture Capital VI, L.P.	TenPercentOwner	Sell	400K	$1.35	$540K	598K
2024-07-03	Brady Stephen R	President and CEO	Buy	35K	$2.11	$74K	46K
2024-07-02	Whiting Samuel	Chief Medical Officer	Buy	5K	$2.13	$10K	10K
2024-06-28	Trojanowski Justin	Corporate Controller	Buy	8K	$2.16	$16K	22K
2022-04-29	Woiwode Thomas	Director,TenPercentOwner	Buy	2.1M	$2.36	$5.0M	2.1M
2022-01-07	Dubensky Thomas W.	President	Buy	2K	$4.78	$10K	113K
2022-01-06	Whiting Samuel	Chief Medical Officer	Buy	2K	$4.80	$8K	2K
2021-06-25	Lorenzo Pierre	Corporate Controller	Grant	53	price not stated in the filing	not stated	53
2021-06-25	Woiwode Thomas	Director,TenPercentOwner	Grant	998K	price not stated in the filing	not stated	998K
2021-06-25	Woiwode Thomas	Director,TenPercentOwner	Grant	1.2M	price not stated in the filing	not stated	1.2M
2021-06-25	Woiwode Thomas	Director,TenPercentOwner	Grant	7K	price not stated in the filing	not stated	7K
2021-06-25	Dubensky Thomas W.	President	Grant	111K	price not stated in the filing	not stated	111K
2021-06-25	Xu Stella	Director	Grant	580K	price not stated in the filing	not stated	580K
2021-06-25	Whiting Samuel	Chief Medical Officer	Grant	201	price not stated in the filing	not stated	201

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.

Large holders (13D and 13G)

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

4 holders report 5% or more of TPST in their latest filing, 1 on Schedule 13D (active intent). The largest reported stake is Matthew Angel at 37.4% of the class (5,531,516 shares), filed 2026-03-25 for an event on 2026-03-24.

Filed	Form	Holder	Shares	Of class	Event
2026-04-02	13D/Ano. 7	Versant Vantage II, L.P.partnership	163K	1.1%	2026-03-30
2026-04-02	13D/Ano. 7	Versant Vantage II GP-GP, LLCother entity	163K	1.1%	2026-03-30
2026-04-02	13D/Ano. 7	Versant Vantage II GP, L.P.partnership	163K	1.1%	2026-03-30
2026-04-02	13D/Ano. 7	Versant Ventures IV, LLCother entity	91K	0.6%	2026-03-30
2026-04-02	13D/Ano. 7	Versant Venture Capital IV, L.P.partnership	90K	0.6%	2026-03-30
2026-04-02	13D/Ano. 7	Versant Ventures VI GP, L.P.partnership	16K	0.1%	2026-03-30
2026-04-02	13D/Ano. 7	Versant Venture Capital VI, L.P.partnership	16K	0.1%	2026-03-30
2026-04-02	13D/Ano. 7	Versant Ventures VI GP-GP, LLCother entity	16K	0.1%	2026-03-30
2026-04-02	13D/Ano. 7	Versant Side Fund IV, L.P.partnership	567	0.0%	2026-03-30
2026-03-25	13D/Ano. 1	Matthew Angelindividual	5.5M	37.4%	2026-03-24
2026-01-21	13G	SABBY MANAGEMENT, LLCcorporation	492K	9.9%	2025-12-31
2026-01-21	13G	Hal Mintzindividual	492K	9.9%	2025-12-31
2026-01-21	13G	Sabby Volatility Warrant Master Fund, Ltd.corporation	492K	9.9%	2025-12-31

13F holders

Tracked managers holding TPST at their latest 13F. JSON

1 of the 30 tracked managers held TPST at their latest 13F, $22K in total at quarter-end prices. Citadel Advisors is the largest at $22K (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 1 added shares and 0 cut.

Fund	Quarter	Shares	Value	Of portfolio	Change in shares
Citadel Advisors	2026-06-30	20K	$22K	0.00%	new

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

Tempest Therapeutics 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 Tempest Therapeutics (TPST), SEC CIK 1544227, listed on Nasdaq. 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 2026-10-13.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 2026-04-02.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 2026-08-13.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 2026-03-24.JSON and CSV
Company record: EDGAR filing index for CIK 1544227Ticker, name and exchange from the SEC's company list, refreshed weekly.
Rate limits: 10 requests a minute without a key, 30 with a free key from a free account.

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.

Datasets

Frequently Asked Questions

How much of TPST is sold short?

312,948 shares were held short at the 2026-10-15 settlement, 1.0 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 TPST's daily short volume?

On 2026-11-02, 36,365 of the 65,127 TPST shares reported to FINRA were sold short, 55.8% of the day's reported volume. Short volume is a flow for one day, not a position.

Does TPST have fails to deliver?

The SEC's latest file shows 8,345 TPST shares failed to deliver at settlement 2026-10-13. Fails are reported per settlement date and published twice a month with a lag.

Are TPST insiders buying or selling?

No open-market insider trades were reported for TPST in the last 90 days. The most recent filings are listed below. Latest filing: Angel Matthew (CEO and President) on 2026-03-24.

Who owns 5% or more of TPST?

Which tracked 13F managers own TPST?

1 of the 30 tracked 13F managers held TPST shares at their latest filing, $22K in all. The largest: Ken Griffin's Citadel Advisors (20K shares, $22K).

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

Tempest Therapeutics (TPST)

Short interest

Daily short volume

Fails to deliver

Insider trades

Large holders (13D and 13G)

13F holders

Tempest Therapeutics in the regulatory record

Source and updates

How to read it

Other company pages

Datasets

Frequently Asked Questions